diff --git a/.drone.yml b/.drone.yml
index 2c586a3..47aaf68 100755
--- a/.drone.yml
+++ b/.drone.yml
@@ -16,19 +16,9 @@ steps:
 #  - name: pub-cache
 #    path: /opt/flutter/.pub-cache
 #  commands:
+#  - flutter pub run build_runner clean
 #  - flutter pub run build_runner build --delete-conflicting-outputs
 
-#- name: android-check
-#  image: v7lin/flutter:1.17.3-stable
-#  volumes:
-#  - name: pub-cache
-#    path: /opt/flutter/.pub-cache
-#  - name: gradle
-#    path: /root/.gradle
-#  commands:
-#  - cd example/android/
-#  - ./gradlew :wechat_kit:check
-
 # docker run --rm -it -v ${PWD}:/src v7lin/clang:5.0.2-r0 sh -c "clang-format -style=file -i src/Classes/*.h src/Classes/*.m"
 #- name: ios-format
 #  image: v7lin/clang
diff --git a/.gitignore b/.gitignore
index 5f2e1f4..95abf25 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,6 @@
 
 build/
 
-# custom
-.idea/
+#
 *.iml
+.idea/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 742324a..b3763a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 2.1.0
+
+* nullsafety
+* 不再支持 Android embedding v1
+* Tencent 单例
+
 ## 2.0.1
 
 * 优化
diff --git a/README.md b/README.md
index 41bdb0b..9c3d645 100644
--- a/README.md
+++ b/README.md
@@ -159,6 +159,9 @@ Capabilities -> Associated Domain -> Domain -> applinks:${your applinks}
 |QQ|不支持|不支持|支持|支持|不支持|支持|
 |QZone|支持|不支持|不支持|不支持|不支持|支持|
 
+* break change
+    * 2.1.0: nullsafety & 不再支持 Android embedding v1 & Tencent 单例
+
 * snapshot
 
 ```
diff --git a/analysis_options.yaml b/analysis_options.yaml
index 6a73b35..41cde2e 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -37,7 +37,7 @@ analyzer:
     # Please see https://github.com/flutter/flutter/pull/24528 for details.
     sdk_version_async_exported_from_core: ignore
   exclude:
-    - "**/*.g.dart"
+    - "lib/*.g.dart"
 
 linter:
   rules:
@@ -49,6 +49,7 @@ linter:
     # - always_put_required_named_parameters_first # we prefer having parameters in the same order as fields https://github.com/flutter/flutter/issues/10219
     - always_require_non_null_named_parameters
     - always_specify_types
+    - always_use_package_imports # we do this commonly
     - annotate_overrides
     # - avoid_annotating_with_dynamic # conflicts with always_specify_types
     # - avoid_as # required for implicit-casts: true
@@ -59,6 +60,7 @@ linter:
     # - avoid_double_and_int_checks # only useful when targeting JS runtime
     - avoid_empty_else
     - avoid_equals_and_hash_code_on_mutable_classes
+    # - avoid_escaping_inner_quotes # not yet tested
     - avoid_field_initializers_in_const_classes
     - avoid_function_literals_in_foreach_calls
     # - avoid_implementing_value_types # not yet tested
@@ -77,9 +79,10 @@ linter:
     - avoid_returning_null_for_void
     # - avoid_returning_this # there are plenty of valid reasons to return this
     # - avoid_setters_without_getters # not yet tested
-    # - avoid_shadowing_type_parameters # not yet tested
+    - avoid_shadowing_type_parameters
     - avoid_single_cascade_in_expression_statements
     - avoid_slow_async_io
+    # - avoid_type_to_string # we do this commonly
     - avoid_types_as_parameter_names
     # - avoid_types_on_closure_parameters # conflicts with always_specify_types
     # - avoid_unnecessary_containers # not yet tested
@@ -91,65 +94,71 @@ linter:
     - camel_case_types
     - cancel_subscriptions
     # - cascade_invocations # not yet tested
+    - cast_nullable_to_non_nullable
     # - close_sinks # not reliable enough
     # - comment_references # blocked on https://github.com/flutter/flutter/issues/20765
     # - constant_identifier_names # needs an opt-out https://github.com/dart-lang/linter/issues/204
     - control_flow_in_finally
-    # - curly_braces_in_flow_control_structures # not yet tested
+    # - curly_braces_in_flow_control_structures # not required by flutter style
     # - diagnostic_describe_all_properties # not yet tested
     - directives_ordering
+    # - do_not_use_environment # we do this commonly
     - empty_catches
     - empty_constructor_bodies
     - empty_statements
-    - file_names
+    - exhaustive_cases
+    - file_names # not yet tested
     - flutter_style_todos
     - hash_and_equals
     - implementation_imports
     # - invariant_booleans # too many false positives: https://github.com/dart-lang/linter/issues/811
     - iterable_contains_unrelated_type
-    # - join_return_with_assignment # not yet tested
+    # - join_return_with_assignment # not required by flutter style
+    - leading_newlines_in_multiline_strings
     - library_names
     - library_prefixes
-    # - lines_longer_than_80_chars # not yet tested
+    # - lines_longer_than_80_chars # not required by flutter style
     - list_remove_unrelated_type
     # - literal_only_boolean_expressions # too many false positives: https://github.com/dart-lang/sdk/issues/34181
     # - missing_whitespace_between_adjacent_strings # not yet tested
     - no_adjacent_strings_in_list
+    # - no_default_cases # too many false positives
     - no_duplicate_case_values
-    # - no_logic_in_create_state # not yet tested
-    # - no_runtimeType_toString # not yet tested
+    - no_logic_in_create_state
+    # - no_runtimeType_toString # ok in tests; we enable this only in packages/
     - non_constant_identifier_names
-    # - null_closures  # not yet tested
+    - null_check_on_nullable_type_parameter
+    # - null_closures # not required by flutter style
     # - omit_local_variable_types # opposite of always_specify_types
     # - one_member_abstracts # too many false positives
     # - only_throw_errors # https://github.com/flutter/flutter/issues/5792
     - overridden_fields
     - package_api_docs
-    - package_names
+    # - package_names # non conforming packages in sdk
     - package_prefixed_library_names
     # - parameter_assignments # we do this commonly
     - prefer_adjacent_string_concatenation
     - prefer_asserts_in_initializer_lists
-    # - prefer_asserts_with_message # not yet tested
+    # - prefer_asserts_with_message # not required by flutter style
     - prefer_collection_literals
     - prefer_conditional_assignment
     - prefer_const_constructors
     - prefer_const_constructors_in_immutables
     - prefer_const_declarations
     - prefer_const_literals_to_create_immutables
-    # - prefer_constructors_over_static_methods # not yet tested
+    # - prefer_constructors_over_static_methods # far too many false positives
     - prefer_contains
     # - prefer_double_quotes # opposite of prefer_single_quotes
     - prefer_equal_for_default_values
     # - prefer_expression_function_bodies # conflicts with https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#consider-using--for-short-functions-and-methods
     - prefer_final_fields
-    # - prefer_final_in_for_each
-    # - prefer_final_locals
+    - prefer_final_in_for_each
+    - prefer_final_locals
     - prefer_for_elements_to_map_fromIterable
-    # - prefer_foreach
+    - prefer_foreach
     # - prefer_function_declarations_over_variables # not yet tested
     - prefer_generic_function_type_aliases
-    # - prefer_if_elements_to_conditional_expressions
+    - prefer_if_elements_to_conditional_expressions
     - prefer_if_null_operators
     - prefer_initializing_formals
     - prefer_inlined_adds
@@ -169,13 +178,15 @@ linter:
     # - provide_deprecation_message # not yet tested
     # - public_member_api_docs # enabled on a case-by-case basis; see e.g. packages/analysis_options.yaml
     - recursive_getters
+    # - sized_box_for_whitespace # not yet tested
     - slash_for_doc_comments
     # - sort_child_properties_last # not yet tested
     - sort_constructors_first
-    - sort_pub_dependencies
+    # - sort_pub_dependencies # prevents separating pinned transitive dependencies
     - sort_unnamed_constructors_first
     - test_types_in_equals
     - throw_in_finally
+    - tighten_type_of_initializing_formals
     # - type_annotate_public_apis # subset of always_specify_types
     - type_init_formals
     - unawaited_futures # too many false positives
@@ -187,18 +198,24 @@ linter:
     # - unnecessary_lambdas # has false positives: https://github.com/dart-lang/linter/issues/498
     - unnecessary_new
     - unnecessary_null_aware_assignments
+    # - unnecessary_null_checks # not yet tested
     - unnecessary_null_in_if_null_operators
+    - unnecessary_nullable_for_final_variable_declarations
     - unnecessary_overrides
     - unnecessary_parenthesis
+    # - unnecessary_raw_strings # not yet tested
     - unnecessary_statements
+    - unnecessary_string_escapes
     - unnecessary_string_interpolations
     - unnecessary_this
     - unrelated_type_equality_checks
     # - unsafe_html # not yet tested
     - use_full_hex_values_for_flutter_colors
     # - use_function_type_syntax_for_parameters # not yet tested
+    - use_is_even_rather_than_modulo
     # - use_key_in_widget_constructors # not yet tested
     - use_late_for_private_fields_and_variables
+    - use_raw_strings
     - use_rethrow_when_possible
     # - use_setters_to_change_properties # not yet tested
     # - use_string_buffers # has false positives: https://github.com/dart-lang/sdk/issues/34182
diff --git a/android/build.gradle b/android/build.gradle
index 7939290..39265e8 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -1,5 +1,5 @@
 group 'io.github.v7lin.tencent_kit'
-version '2.0.1'
+version '2.1.0'
 
 buildscript {
     repositories {
@@ -8,7 +8,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.4'
+        classpath 'com.android.tools.build:gradle:4.1.0'
     }
 }
 
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
index 01a286e..3c9d085 100644
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip
diff --git a/android/src/main/java/io/github/v7lin/tencent_kit/TencentKit.java b/android/src/main/java/io/github/v7lin/tencent_kit/TencentKit.java
deleted file mode 100644
index c6ea4b8..0000000
--- a/android/src/main/java/io/github/v7lin/tencent_kit/TencentKit.java
+++ /dev/null
@@ -1,514 +0,0 @@
-package io.github.v7lin.tencent_kit;
-
-import android.app.Activity;
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.content.pm.ProviderInfo;
-import android.net.Uri;
-import android.os.Bundle;
-import android.text.TextUtils;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import com.tencent.connect.common.Constants;
-import com.tencent.connect.share.QQShare;
-import com.tencent.connect.share.QzonePublish;
-import com.tencent.connect.share.QzoneShare;
-import com.tencent.tauth.IUiListener;
-import com.tencent.tauth.Tencent;
-import com.tencent.tauth.UiError;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import io.flutter.plugin.common.BinaryMessenger;
-import io.flutter.plugin.common.MethodCall;
-import io.flutter.plugin.common.MethodChannel;
-import io.flutter.plugin.common.PluginRegistry;
-import io.github.v7lin.tencent_kit.content.TencentKitFileProvider;
-
-public class TencentKit implements MethodChannel.MethodCallHandler, PluginRegistry.ActivityResultListener {
-
-    private static class TencentScene {
-        static final int SCENE_QQ = 0;
-        static final int SCENE_QZONE = 1;
-    }
-
-    private static class TencentRetCode {
-        // 网络请求成功发送至服务器，并且服务器返回数据格式正确
-        // 这里包括所请求业务操作失败的情况，例如没有授权等原因导致
-        static final int RET_SUCCESS = 0;
-        // 网络异常，或服务器返回的数据格式不正确导致无法解析
-        static final int RET_FAILED = 1;
-        static final int RET_COMMON = -1;
-        static final int RET_USERCANCEL = -2;
-    }
-
-    //
-
-    private static final String METHOD_REGISTERAPP = "registerApp";
-    private static final String METHOD_ISQQINSTALLED = "isQQInstalled";
-    private static final String METHOD_ISTIMINSTALLED = "isTIMInstalled";
-    private static final String METHOD_LOGIN = "login";
-    private static final String METHOD_LOGOUT = "logout";
-    private static final String METHOD_SHAREMOOD = "shareMood";
-    private static final String METHOD_SHARETEXT = "shareText";
-    private static final String METHOD_SHAREIMAGE = "shareImage";
-    private static final String METHOD_SHAREMUSIC = "shareMusic";
-    private static final String METHOD_SHAREWEBPAGE = "shareWebpage";
-
-    private static final String METHOD_ONLOGINRESP = "onLoginResp";
-    private static final String METHOD_ONSHARERESP = "onShareResp";
-
-    private static final String ARGUMENT_KEY_APPID = "appId";
-    //    private static final String ARGUMENT_KEY_UNIVERSALLINK = "universalLink";
-    private static final String ARGUMENT_KEY_SCOPE = "scope";
-    private static final String ARGUMENT_KEY_SCENE = "scene";
-    private static final String ARGUMENT_KEY_TITLE = "title";
-    private static final String ARGUMENT_KEY_SUMMARY = "summary";
-    private static final String ARGUMENT_KEY_IMAGEURI = "imageUri";
-    private static final String ARGUMENT_KEY_IMAGEURIS = "imageUris";
-    private static final String ARGUMENT_KEY_VIDEOURI = "videoUri";
-    private static final String ARGUMENT_KEY_MUSICURL = "musicUrl";
-    private static final String ARGUMENT_KEY_TARGETURL = "targetUrl";
-    private static final String ARGUMENT_KEY_APPNAME = "appName";
-    private static final String ARGUMENT_KEY_EXTINT = "extInt";
-
-    private static final String ARGUMENT_KEY_RESULT_RET = "ret";
-    private static final String ARGUMENT_KEY_RESULT_MSG = "msg";
-    private static final String ARGUMENT_KEY_RESULT_OPENID = "openid";
-    private static final String ARGUMENT_KEY_RESULT_ACCESS_TOKEN = "access_token";
-    private static final String ARGUMENT_KEY_RESULT_EXPIRES_IN = "expires_in";
-    private static final String ARGUMENT_KEY_RESULT_CREATE_AT = "create_at";
-
-    private static final String SCHEME_FILE = "file";
-
-    //
-
-    private Context applicationContext;
-    private Activity activity;
-
-    private MethodChannel channel;
-    private Tencent tencent;
-
-    public TencentKit() {
-        super();
-    }
-
-    public TencentKit(Context applicationContext, Activity activity) {
-        this.applicationContext = applicationContext;
-        this.activity = activity;
-    }
-
-    //
-
-    public void setApplicationContext(@Nullable Context applicationContext) {
-        this.applicationContext = applicationContext;
-    }
-
-    public void setActivity(@Nullable Activity activity) {
-        this.activity = activity;
-    }
-
-    public void startListening(@NonNull BinaryMessenger messenger) {
-        channel = new MethodChannel(messenger, "v7lin.github.io/tencent_kit");
-        channel.setMethodCallHandler(this);
-    }
-
-    public void stopListening() {
-        channel.setMethodCallHandler(null);
-        channel = null;
-    }
-
-    // --- MethodCallHandler
-
-    @Override
-    public void onMethodCall(@NonNull MethodCall call, @NonNull MethodChannel.Result result) {
-        if (METHOD_REGISTERAPP.equals(call.method)) {
-            final String appId = call.argument(ARGUMENT_KEY_APPID);
-//            final String universalLink = call.argument(ARGUMENT_KEY_UNIVERSALLINK);
-            String authority = null;
-            try {
-                ProviderInfo providerInfo = applicationContext.getPackageManager().getProviderInfo(new ComponentName(applicationContext, TencentKitFileProvider.class), PackageManager.MATCH_DEFAULT_ONLY);
-                authority = providerInfo.authority;
-            } catch (PackageManager.NameNotFoundException e) {
-                // ignore
-            }
-            if (!TextUtils.isEmpty(authority)) {
-                tencent = Tencent.createInstance(appId, applicationContext, authority);
-            } else {
-                tencent = Tencent.createInstance(appId, applicationContext);
-            }
-            result.success(null);
-        } else if (METHOD_ISQQINSTALLED.equals(call.method)) {
-            result.success(isAppInstalled(applicationContext, "com.tencent.mobileqq"));
-        } else if (METHOD_ISTIMINSTALLED.equals(call.method)) {
-            result.success(isAppInstalled(applicationContext, "com.tencent.tim"));
-        } else if (METHOD_LOGIN.equals(call.method)) {
-            login(call, result);
-        } else if (METHOD_LOGOUT.equals(call.method)) {
-            logout(call, result);
-        } else if (METHOD_SHAREMOOD.equals(call.method)) {
-            shareMood(call, result);
-        } else if (METHOD_SHARETEXT.equals(call.method)) {
-            shareText(call, result);
-        } else if (METHOD_SHAREIMAGE.equals(call.method)) {
-            shareImage(call, result);
-        } else if (METHOD_SHAREMUSIC.equals(call.method)) {
-            shareMusic(call, result);
-        } else if (METHOD_SHAREWEBPAGE.equals(call.method)) {
-            shareWebpage(call, result);
-        } else {
-            result.notImplemented();
-        }
-    }
-
-    private void login(MethodCall call, MethodChannel.Result result) {
-        String scope = call.argument(ARGUMENT_KEY_SCOPE);
-        if (tencent != null) {
-            tencent.login(activity, scope, loginListener);
-        }
-        result.success(null);
-    }
-
-    private IUiListener loginListener = new IUiListener() {
-        @Override
-        public void onComplete(Object o) {
-            Map<String, Object> map = new HashMap<>();
-            try {
-                if (o != null && o instanceof JSONObject) {
-                    JSONObject object = (JSONObject) o;
-                    int ret = !object.isNull(ARGUMENT_KEY_RESULT_RET) ? object.getInt(ARGUMENT_KEY_RESULT_RET) : TencentRetCode.RET_FAILED;
-                    String msg = !object.isNull(ARGUMENT_KEY_RESULT_MSG) ? object.getString(ARGUMENT_KEY_RESULT_MSG) : null;
-                    if (ret == TencentRetCode.RET_SUCCESS) {
-                        String openId = !object.isNull(ARGUMENT_KEY_RESULT_OPENID) ? object.getString(ARGUMENT_KEY_RESULT_OPENID) : null;
-                        String accessToken = !object.isNull(ARGUMENT_KEY_RESULT_ACCESS_TOKEN) ? object.getString(ARGUMENT_KEY_RESULT_ACCESS_TOKEN) : null;
-                        int expiresIn = !object.isNull(ARGUMENT_KEY_RESULT_EXPIRES_IN) ? object.getInt(ARGUMENT_KEY_RESULT_EXPIRES_IN) : 0;
-                        long createAt = System.currentTimeMillis();
-                        if (!TextUtils.isEmpty(openId) && !TextUtils.isEmpty(accessToken)) {
-                            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_SUCCESS);
-                            map.put(ARGUMENT_KEY_RESULT_OPENID, openId);
-                            map.put(ARGUMENT_KEY_RESULT_ACCESS_TOKEN, accessToken);
-                            map.put(ARGUMENT_KEY_RESULT_EXPIRES_IN, expiresIn);
-                            map.put(ARGUMENT_KEY_RESULT_CREATE_AT, createAt);
-                        } else {
-                            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-                            map.put(ARGUMENT_KEY_RESULT_MSG, "openId or accessToken is null.");
-                        }
-                    } else {
-                        map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-                        map.put(ARGUMENT_KEY_RESULT_MSG, msg);
-                    }
-                }
-            } catch (JSONException e) {
-                map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-                map.put(ARGUMENT_KEY_RESULT_MSG, e.getMessage());
-            }
-            if (channel != null) {
-                channel.invokeMethod(METHOD_ONLOGINRESP, map);
-            }
-        }
-
-        @Override
-        public void onError(UiError uiError) {
-            // 登录失败
-            Map<String, Object> map = new HashMap<>();
-            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-            map.put(ARGUMENT_KEY_RESULT_MSG, uiError.errorMessage);
-            if (channel != null) {
-                channel.invokeMethod(METHOD_ONLOGINRESP, map);
-            }
-        }
-
-        @Override
-        public void onCancel() {
-            // 取消登录
-            Map<String, Object> map = new HashMap<>();
-            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_USERCANCEL);
-            if (channel != null) {
-                channel.invokeMethod(METHOD_ONLOGINRESP, map);
-            }
-        }
-
-        @Override
-        public void onWarning(int code) {
-        }
-    };
-
-    private void logout(MethodCall call, MethodChannel.Result result) {
-        if (tencent != null) {
-            tencent.logout(applicationContext);
-        }
-        result.success(null);
-    }
-
-    private void shareMood(MethodCall call, MethodChannel.Result result) {
-        int scene = call.argument(ARGUMENT_KEY_SCENE);
-        if (scene == TencentScene.SCENE_QZONE) {
-            String summary = call.argument(ARGUMENT_KEY_SUMMARY);
-            List<String> imageUris = call.argument(ARGUMENT_KEY_IMAGEURIS);
-            String videoUri = call.argument(ARGUMENT_KEY_VIDEOURI);
-
-            Bundle params = new Bundle();
-            if (!TextUtils.isEmpty(summary)) {
-                params.putString(QzonePublish.PUBLISH_TO_QZONE_SUMMARY, summary);
-            }
-            if (imageUris != null && !imageUris.isEmpty()) {
-                ArrayList<String> uris = new ArrayList<>();
-                for (String imageUri : imageUris) {
-                    uris.add(Uri.parse(imageUri).getPath());
-                }
-                params.putStringArrayList(QzonePublish.PUBLISH_TO_QZONE_IMAGE_URL, uris);
-            }
-            if (!TextUtils.isEmpty(videoUri)) {
-                String videoPath = Uri.parse(videoUri).getPath();
-                params.putString(QzonePublish.PUBLISH_TO_QZONE_VIDEO_PATH, videoPath);
-                params.putInt(QzonePublish.PUBLISH_TO_QZONE_KEY_TYPE, QzonePublish.PUBLISH_TO_QZONE_TYPE_PUBLISHVIDEO);
-            } else {
-                params.putInt(QzonePublish.PUBLISH_TO_QZONE_KEY_TYPE, QzonePublish.PUBLISH_TO_QZONE_TYPE_PUBLISHMOOD);
-            }
-            if (tencent != null) {
-                tencent.publishToQzone(activity, params, shareListener);
-            }
-        }
-        result.success(null);
-    }
-
-    private void shareText(MethodCall call, MethodChannel.Result result) {
-        int scene = call.argument(ARGUMENT_KEY_SCENE);
-        if (scene == TencentScene.SCENE_QQ) {
-            String summary = call.argument(ARGUMENT_KEY_SUMMARY);
-            Intent sendIntent = new Intent();
-            sendIntent.setAction(Intent.ACTION_SEND);
-            sendIntent.putExtra(Intent.EXTRA_TEXT, summary);
-            sendIntent.setType("text/*");
-            // 普通大众版 > 办公简洁版 > 急速轻聊版
-            PackageManager packageManager = applicationContext.getPackageManager();
-            List<PackageInfo> infos = packageManager.getInstalledPackages(0);
-            if (infos != null && !infos.isEmpty()) {
-                for (String packageName : Arrays.asList("com.tencent.mobileqq", "com.tencent.tim", "com.tencent.qqlite")) {
-                    for (PackageInfo info : infos) {
-                        if (packageName.equals(info.packageName)) {
-                            sendIntent.setPackage(packageName);
-                            if (sendIntent.resolveActivity(applicationContext.getPackageManager()) != null) {
-                                sendIntent.setComponent(new ComponentName(packageName, "com.tencent.mobileqq.activity.JumpActivity"));
-                                activity.startActivity(sendIntent);
-                                break;
-                            }
-                        }
-                    }
-                }
-            }
-        }
-        result.success(null);
-    }
-
-    private void shareImage(MethodCall call, MethodChannel.Result result) {
-        int scene = call.argument(ARGUMENT_KEY_SCENE);
-        if (scene == TencentScene.SCENE_QQ) {
-            String imageUri = call.argument(ARGUMENT_KEY_IMAGEURI);
-            String appName = call.argument(ARGUMENT_KEY_APPNAME);
-            int extInt = call.argument(ARGUMENT_KEY_EXTINT);
-
-            Bundle params = new Bundle();
-            params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_IMAGE);
-            params.putString(QQShare.SHARE_TO_QQ_IMAGE_LOCAL_URL, Uri.parse(imageUri).getPath());
-            if (!TextUtils.isEmpty(appName)) {
-                params.putString(QQShare.SHARE_TO_QQ_APP_NAME, appName);
-            }
-            params.putInt(QQShare.SHARE_TO_QQ_EXT_INT, extInt);
-            if (tencent != null) {
-                tencent.shareToQQ(activity, params, shareListener);
-            }
-        }
-        result.success(null);
-    }
-
-    private void shareMusic(MethodCall call, MethodChannel.Result result) {
-        int scene = call.argument(ARGUMENT_KEY_SCENE);
-        if (scene == TencentScene.SCENE_QQ) {
-            String title = call.argument(ARGUMENT_KEY_TITLE);
-            String summary = call.argument(ARGUMENT_KEY_SUMMARY);
-            String imageUri = call.argument(ARGUMENT_KEY_IMAGEURI);
-            String musicUrl = call.argument(ARGUMENT_KEY_MUSICURL);
-            String targetUrl = call.argument(ARGUMENT_KEY_TARGETURL);
-            String appName = call.argument(ARGUMENT_KEY_APPNAME);
-            int extInt = call.argument(ARGUMENT_KEY_EXTINT);
-
-            Bundle params = new Bundle();
-            params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_AUDIO);
-            params.putString(QQShare.SHARE_TO_QQ_TITLE, title);
-            if (!TextUtils.isEmpty(summary)) {
-                params.putString(QQShare.SHARE_TO_QQ_SUMMARY, summary);
-            }
-            if (!TextUtils.isEmpty(imageUri)) {
-                Uri uri = Uri.parse(imageUri);
-                if (TextUtils.equals(SCHEME_FILE, uri.getScheme())) {
-                    params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, uri.getPath());
-                } else {
-                    params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, imageUri);
-                }
-            }
-            params.putString(QQShare.SHARE_TO_QQ_AUDIO_URL, musicUrl);
-            params.putString(QQShare.SHARE_TO_QQ_TARGET_URL, targetUrl);
-            if (!TextUtils.isEmpty(appName)) {
-                params.putString(QQShare.SHARE_TO_QQ_APP_NAME, appName);
-            }
-            params.putInt(QQShare.SHARE_TO_QQ_EXT_INT, extInt);
-            if (tencent != null) {
-                tencent.shareToQQ(activity, params, shareListener);
-            }
-        }
-        result.success(null);
-    }
-
-    private void shareWebpage(MethodCall call, MethodChannel.Result result) {
-        int scene = call.argument(ARGUMENT_KEY_SCENE);
-        String title = call.argument(ARGUMENT_KEY_TITLE);
-        String summary = call.argument(ARGUMENT_KEY_SUMMARY);
-        String imageUri = call.argument(ARGUMENT_KEY_IMAGEURI);
-        String targetUrl = call.argument(ARGUMENT_KEY_TARGETURL);
-        String appName = call.argument(ARGUMENT_KEY_APPNAME);
-        int extInt = call.argument(ARGUMENT_KEY_EXTINT);
-
-        Bundle params = new Bundle();
-        switch (scene) {
-            case TencentScene.SCENE_QQ:
-                params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_DEFAULT);
-                params.putString(QQShare.SHARE_TO_QQ_TITLE, title);
-                if (!TextUtils.isEmpty(summary)) {
-                    params.putString(QQShare.SHARE_TO_QQ_SUMMARY, summary);
-                }
-                if (!TextUtils.isEmpty(imageUri)) {
-                    Uri uri = Uri.parse(imageUri);
-                    if (TextUtils.equals(SCHEME_FILE, uri.getScheme())) {
-                        params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, uri.getPath());
-                    } else {
-                        params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, imageUri);
-                    }
-                }
-                params.putString(QQShare.SHARE_TO_QQ_TARGET_URL, targetUrl);
-                if (!TextUtils.isEmpty(appName)) {
-                    params.putString(QQShare.SHARE_TO_QQ_APP_NAME, appName);
-                }
-                params.putInt(QQShare.SHARE_TO_QQ_EXT_INT, extInt);
-                if (tencent != null) {
-                    tencent.shareToQQ(activity, params, shareListener);
-                }
-                break;
-            case TencentScene.SCENE_QZONE:
-                params.putInt(QzoneShare.SHARE_TO_QZONE_KEY_TYPE, QzoneShare.SHARE_TO_QZONE_TYPE_IMAGE_TEXT);
-                params.putString(QzoneShare.SHARE_TO_QQ_TITLE, title);
-                if (!TextUtils.isEmpty(summary)) {
-                    params.putString(QzoneShare.SHARE_TO_QQ_SUMMARY, summary);
-                }
-                if (!TextUtils.isEmpty(imageUri)) {
-                    ArrayList<String> uris = new ArrayList<>();
-                    Uri uri = Uri.parse(imageUri);
-                    if (TextUtils.equals(SCHEME_FILE, uri.getScheme())) {
-                        uris.add(uri.getPath());
-                    } else {
-                        uris.add(imageUri);
-                    }
-                    params.putStringArrayList(QzoneShare.SHARE_TO_QQ_IMAGE_URL, uris);
-                }
-                params.putString(QzoneShare.SHARE_TO_QQ_TARGET_URL, targetUrl);
-                if (tencent != null) {
-                    tencent.shareToQzone(activity, params, shareListener);
-                }
-                break;
-            default:
-                break;
-        }
-        result.success(null);
-    }
-
-    private IUiListener shareListener = new IUiListener() {
-        @Override
-        public void onComplete(Object o) {
-            Map<String, Object> map = new HashMap<>();
-            try {
-                if (o != null && o instanceof JSONObject) {
-                    JSONObject object = (JSONObject) o;
-                    int ret = !object.isNull(ARGUMENT_KEY_RESULT_RET) ? object.getInt(ARGUMENT_KEY_RESULT_RET) : TencentRetCode.RET_FAILED;
-                    String msg = !object.isNull(ARGUMENT_KEY_RESULT_MSG) ? object.getString(ARGUMENT_KEY_RESULT_MSG) : null;
-                    if (ret == TencentRetCode.RET_SUCCESS) {
-                        map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_SUCCESS);
-                    } else {
-                        map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-                        map.put(ARGUMENT_KEY_RESULT_MSG, msg);
-                    }
-                }
-            } catch (JSONException e) {
-                map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-                map.put(ARGUMENT_KEY_RESULT_MSG, e.getMessage());
-            }
-            if (channel != null) {
-                channel.invokeMethod(METHOD_ONSHARERESP, map);
-            }
-        }
-
-        @Override
-        public void onError(UiError error) {
-            Map<String, Object> map = new HashMap<>();
-            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
-            map.put(ARGUMENT_KEY_RESULT_MSG, error.errorMessage);
-            if (channel != null) {
-                channel.invokeMethod(METHOD_ONSHARERESP, map);
-            }
-        }
-
-        @Override
-        public void onCancel() {
-            Map<String, Object> map = new HashMap<>();
-            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_USERCANCEL);
-            if (channel != null) {
-                channel.invokeMethod(METHOD_ONSHARERESP, map);
-            }
-        }
-
-        @Override
-        public void onWarning(int code) {
-            if (code == Constants.ERROR_NO_AUTHORITY) {
-                // 如果authorities为空，sdk会回调这个接口，提醒开发者适配FileProvider
-            }
-        }
-    };
-
-    // --- ActivityResultListener
-
-    @Override
-    public boolean onActivityResult(int requestCode, int resultCode, Intent data) {
-        switch (requestCode) {
-            case Constants.REQUEST_LOGIN:
-                return Tencent.onActivityResultData(requestCode, resultCode, data, loginListener);
-            case Constants.REQUEST_QQ_SHARE:
-            case Constants.REQUEST_QZONE_SHARE:
-                return Tencent.onActivityResultData(requestCode, resultCode, data, shareListener);
-            default:
-                break;
-        }
-        return false;
-    }
-
-    // ---
-
-    private static boolean isAppInstalled(Context context, String packageName) {
-        PackageInfo packageInfo = null;
-        try {
-            packageInfo = context.getPackageManager().getPackageInfo(packageName, 0);
-        } catch (PackageManager.NameNotFoundException e) {
-        }
-        return packageInfo != null;
-    }
-}
diff --git a/android/src/main/java/io/github/v7lin/tencent_kit/TencentKitPlugin.java b/android/src/main/java/io/github/v7lin/tencent_kit/TencentKitPlugin.java
index 53904fb..bd26da9 100644
--- a/android/src/main/java/io/github/v7lin/tencent_kit/TencentKitPlugin.java
+++ b/android/src/main/java/io/github/v7lin/tencent_kit/TencentKitPlugin.java
@@ -1,62 +1,135 @@
 package io.github.v7lin.tencent_kit;
 
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ProviderInfo;
+import android.net.Uri;
+import android.os.Bundle;
+import android.text.TextUtils;
+
 import androidx.annotation.NonNull;
 
+import com.tencent.connect.common.Constants;
+import com.tencent.connect.share.QQShare;
+import com.tencent.connect.share.QzonePublish;
+import com.tencent.connect.share.QzoneShare;
+import com.tencent.tauth.IUiListener;
+import com.tencent.tauth.Tencent;
+import com.tencent.tauth.UiError;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 import io.flutter.embedding.engine.plugins.FlutterPlugin;
 import io.flutter.embedding.engine.plugins.activity.ActivityAware;
 import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding;
-import io.flutter.plugin.common.PluginRegistry;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel;
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
+import io.flutter.plugin.common.MethodChannel.Result;
+import io.flutter.plugin.common.PluginRegistry.ActivityResultListener;
+import io.github.v7lin.tencent_kit.content.TencentKitFileProvider;
 
 /**
  * TencentKitPlugin
  */
-public class TencentKitPlugin implements FlutterPlugin, ActivityAware {
-    // This static function is optional and equivalent to onAttachedToEngine. It supports the old
-    // pre-Flutter-1.12 Android projects. You are encouraged to continue supporting
-    // plugin registration via this function while apps migrate to use the new Android APIs
-    // post-flutter-1.12 via https://flutter.dev/go/android-project-migration.
-    //
-    // It is encouraged to share logic between onAttachedToEngine and registerWith to keep
-    // them functionally equivalent. Only one of onAttachedToEngine or registerWith will be called
-    // depending on the user's project. onAttachedToEngine or registerWith must both be defined
-    // in the same class.
-    public static void registerWith(PluginRegistry.Registrar registrar) {
-        TencentKit tencentKit = new TencentKit(registrar.context(), registrar.activity());
-        registrar.addActivityResultListener(tencentKit);
-        tencentKit.startListening(registrar.messenger());
+public class TencentKitPlugin implements FlutterPlugin, ActivityAware, ActivityResultListener, MethodCallHandler {
+
+    private static class TencentScene {
+        static final int SCENE_QQ = 0;
+        static final int SCENE_QZONE = 1;
     }
 
+    private static class TencentRetCode {
+        // 网络请求成功发送至服务器，并且服务器返回数据格式正确
+        // 这里包括所请求业务操作失败的情况，例如没有授权等原因导致
+        static final int RET_SUCCESS = 0;
+        // 网络异常，或服务器返回的数据格式不正确导致无法解析
+        static final int RET_FAILED = 1;
+        static final int RET_COMMON = -1;
+        static final int RET_USERCANCEL = -2;
+    }
+
+    //
+
+    private static final String METHOD_REGISTERAPP = "registerApp";
+    private static final String METHOD_ISQQINSTALLED = "isQQInstalled";
+    private static final String METHOD_ISTIMINSTALLED = "isTIMInstalled";
+    private static final String METHOD_LOGIN = "login";
+    private static final String METHOD_LOGOUT = "logout";
+    private static final String METHOD_SHAREMOOD = "shareMood";
+    private static final String METHOD_SHARETEXT = "shareText";
+    private static final String METHOD_SHAREIMAGE = "shareImage";
+    private static final String METHOD_SHAREMUSIC = "shareMusic";
+    private static final String METHOD_SHAREWEBPAGE = "shareWebpage";
+
+    private static final String METHOD_ONLOGINRESP = "onLoginResp";
+    private static final String METHOD_ONSHARERESP = "onShareResp";
+
+    private static final String ARGUMENT_KEY_APPID = "appId";
+    //    private static final String ARGUMENT_KEY_UNIVERSALLINK = "universalLink";
+    private static final String ARGUMENT_KEY_SCOPE = "scope";
+    private static final String ARGUMENT_KEY_SCENE = "scene";
+    private static final String ARGUMENT_KEY_TITLE = "title";
+    private static final String ARGUMENT_KEY_SUMMARY = "summary";
+    private static final String ARGUMENT_KEY_IMAGEURI = "imageUri";
+    private static final String ARGUMENT_KEY_IMAGEURIS = "imageUris";
+    private static final String ARGUMENT_KEY_VIDEOURI = "videoUri";
+    private static final String ARGUMENT_KEY_MUSICURL = "musicUrl";
+    private static final String ARGUMENT_KEY_TARGETURL = "targetUrl";
+    private static final String ARGUMENT_KEY_APPNAME = "appName";
+    private static final String ARGUMENT_KEY_EXTINT = "extInt";
+
+    private static final String ARGUMENT_KEY_RESULT_RET = "ret";
+    private static final String ARGUMENT_KEY_RESULT_MSG = "msg";
+    private static final String ARGUMENT_KEY_RESULT_OPENID = "openid";
+    private static final String ARGUMENT_KEY_RESULT_ACCESS_TOKEN = "access_token";
+    private static final String ARGUMENT_KEY_RESULT_EXPIRES_IN = "expires_in";
+    private static final String ARGUMENT_KEY_RESULT_CREATE_AT = "create_at";
+
+    private static final String SCHEME_FILE = "file";
+
+    /// The MethodChannel that will the communication between Flutter and native Android
+    ///
+    /// This local reference serves to register the plugin with the Flutter Engine and unregister it
+    /// when the Flutter Engine is detached from the Activity
+    private MethodChannel channel;
+    private Context applicationContext;
+    private ActivityPluginBinding activityPluginBinding;
+
+    private Tencent tencent;
+
     // --- FlutterPlugin
 
-    private final TencentKit tencentKit;
-
-    private ActivityPluginBinding pluginBinding;
-
-    public TencentKitPlugin() {
-        tencentKit = new TencentKit();
-    }
-
     @Override
     public void onAttachedToEngine(@NonNull FlutterPluginBinding binding) {
-        tencentKit.setApplicationContext(binding.getApplicationContext());
-        tencentKit.setActivity(null);
-        tencentKit.startListening(binding.getBinaryMessenger());
+        channel = new MethodChannel(binding.getBinaryMessenger(), "v7lin.github.io/tencent_kit");
+        channel.setMethodCallHandler(this);
+        applicationContext = binding.getApplicationContext();
     }
 
     @Override
     public void onDetachedFromEngine(@NonNull FlutterPluginBinding binding) {
-        tencentKit.stopListening();
-        tencentKit.setActivity(null);
-        tencentKit.setApplicationContext(null);
+        channel.setMethodCallHandler(null);
+        channel = null;
+        applicationContext = null;
     }
 
     // --- ActivityAware
 
     @Override
     public void onAttachedToActivity(@NonNull ActivityPluginBinding binding) {
-        tencentKit.setActivity(binding.getActivity());
-        pluginBinding = binding;
-        pluginBinding.addActivityResultListener(tencentKit);
+        activityPluginBinding = binding;
+        activityPluginBinding.addActivityResultListener(this);
     }
 
     @Override
@@ -71,8 +144,389 @@ public class TencentKitPlugin implements FlutterPlugin, ActivityAware {
 
     @Override
     public void onDetachedFromActivity() {
-        tencentKit.setActivity(null);
-        pluginBinding.removeActivityResultListener(tencentKit);
-        pluginBinding = null;
+        activityPluginBinding.removeActivityResultListener(this);
+        activityPluginBinding = null;
+    }
+
+    // --- ActivityResultListener
+
+    @Override
+    public boolean onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case Constants.REQUEST_LOGIN:
+                return Tencent.onActivityResultData(requestCode, resultCode, data, loginListener);
+            case Constants.REQUEST_QQ_SHARE:
+            case Constants.REQUEST_QZONE_SHARE:
+                return Tencent.onActivityResultData(requestCode, resultCode, data, shareListener);
+            default:
+                break;
+        }
+        return false;
+    }
+
+    // --- MethodCallHandler
+
+    @Override
+    public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
+        if (METHOD_REGISTERAPP.equals(call.method)) {
+            final String appId = call.argument(ARGUMENT_KEY_APPID);
+//            final String universalLink = call.argument(ARGUMENT_KEY_UNIVERSALLINK);
+            String authority = null;
+            try {
+                ProviderInfo providerInfo = applicationContext.getPackageManager().getProviderInfo(new ComponentName(applicationContext, TencentKitFileProvider.class), PackageManager.MATCH_DEFAULT_ONLY);
+                authority = providerInfo.authority;
+            } catch (PackageManager.NameNotFoundException e) {
+                // ignore
+            }
+            if (!TextUtils.isEmpty(authority)) {
+                tencent = Tencent.createInstance(appId, applicationContext, authority);
+            } else {
+                tencent = Tencent.createInstance(appId, applicationContext);
+            }
+            result.success(null);
+        } else if (METHOD_ISQQINSTALLED.equals(call.method)) {
+            result.success(isAppInstalled(applicationContext, "com.tencent.mobileqq"));
+        } else if (METHOD_ISTIMINSTALLED.equals(call.method)) {
+            result.success(isAppInstalled(applicationContext, "com.tencent.tim"));
+        } else if (METHOD_LOGIN.equals(call.method)) {
+            login(call, result);
+        } else if (METHOD_LOGOUT.equals(call.method)) {
+            logout(call, result);
+        } else if (METHOD_SHAREMOOD.equals(call.method)) {
+            shareMood(call, result);
+        } else if (METHOD_SHARETEXT.equals(call.method)) {
+            shareText(call, result);
+        } else if (METHOD_SHAREIMAGE.equals(call.method)) {
+            shareImage(call, result);
+        } else if (METHOD_SHAREMUSIC.equals(call.method)) {
+            shareMusic(call, result);
+        } else if (METHOD_SHAREWEBPAGE.equals(call.method)) {
+            shareWebpage(call, result);
+        } else {
+            result.notImplemented();
+        }
+    }
+
+    private void login(@NonNull MethodCall call, @NonNull Result result) {
+        String scope = call.argument(ARGUMENT_KEY_SCOPE);
+        if (tencent != null) {
+            tencent.login(activityPluginBinding.getActivity(), scope, loginListener);
+        }
+        result.success(null);
+    }
+
+    private IUiListener loginListener = new IUiListener() {
+        @Override
+        public void onComplete(Object o) {
+            Map<String, Object> map = new HashMap<>();
+            try {
+                if (o != null && o instanceof JSONObject) {
+                    JSONObject object = (JSONObject) o;
+                    int ret = !object.isNull(ARGUMENT_KEY_RESULT_RET) ? object.getInt(ARGUMENT_KEY_RESULT_RET) : TencentRetCode.RET_FAILED;
+                    String msg = !object.isNull(ARGUMENT_KEY_RESULT_MSG) ? object.getString(ARGUMENT_KEY_RESULT_MSG) : null;
+                    if (ret == TencentRetCode.RET_SUCCESS) {
+                        String openId = !object.isNull(ARGUMENT_KEY_RESULT_OPENID) ? object.getString(ARGUMENT_KEY_RESULT_OPENID) : null;
+                        String accessToken = !object.isNull(ARGUMENT_KEY_RESULT_ACCESS_TOKEN) ? object.getString(ARGUMENT_KEY_RESULT_ACCESS_TOKEN) : null;
+                        int expiresIn = !object.isNull(ARGUMENT_KEY_RESULT_EXPIRES_IN) ? object.getInt(ARGUMENT_KEY_RESULT_EXPIRES_IN) : 0;
+                        long createAt = System.currentTimeMillis();
+                        if (!TextUtils.isEmpty(openId) && !TextUtils.isEmpty(accessToken)) {
+                            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_SUCCESS);
+                            map.put(ARGUMENT_KEY_RESULT_OPENID, openId);
+                            map.put(ARGUMENT_KEY_RESULT_ACCESS_TOKEN, accessToken);
+                            map.put(ARGUMENT_KEY_RESULT_EXPIRES_IN, expiresIn);
+                            map.put(ARGUMENT_KEY_RESULT_CREATE_AT, createAt);
+                        } else {
+                            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+                            map.put(ARGUMENT_KEY_RESULT_MSG, "openId or accessToken is null.");
+                        }
+                    } else {
+                        map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+                        map.put(ARGUMENT_KEY_RESULT_MSG, msg);
+                    }
+                }
+            } catch (JSONException e) {
+                map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+                map.put(ARGUMENT_KEY_RESULT_MSG, e.getMessage());
+            }
+            if (channel != null) {
+                channel.invokeMethod(METHOD_ONLOGINRESP, map);
+            }
+        }
+
+        @Override
+        public void onError(UiError uiError) {
+            // 登录失败
+            Map<String, Object> map = new HashMap<>();
+            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+            map.put(ARGUMENT_KEY_RESULT_MSG, uiError.errorMessage);
+            if (channel != null) {
+                channel.invokeMethod(METHOD_ONLOGINRESP, map);
+            }
+        }
+
+        @Override
+        public void onCancel() {
+            // 取消登录
+            Map<String, Object> map = new HashMap<>();
+            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_USERCANCEL);
+            if (channel != null) {
+                channel.invokeMethod(METHOD_ONLOGINRESP, map);
+            }
+        }
+
+        @Override
+        public void onWarning(int code) {
+        }
+    };
+
+    private void logout(@NonNull MethodCall call, @NonNull Result result) {
+        if (tencent != null) {
+            tencent.logout(applicationContext);
+        }
+        result.success(null);
+    }
+
+    private void shareMood(@NonNull MethodCall call, @NonNull Result result) {
+        int scene = call.argument(ARGUMENT_KEY_SCENE);
+        if (scene == TencentScene.SCENE_QZONE) {
+            String summary = call.argument(ARGUMENT_KEY_SUMMARY);
+            List<String> imageUris = call.argument(ARGUMENT_KEY_IMAGEURIS);
+            String videoUri = call.argument(ARGUMENT_KEY_VIDEOURI);
+
+            Bundle params = new Bundle();
+            if (!TextUtils.isEmpty(summary)) {
+                params.putString(QzonePublish.PUBLISH_TO_QZONE_SUMMARY, summary);
+            }
+            if (imageUris != null && !imageUris.isEmpty()) {
+                ArrayList<String> uris = new ArrayList<>();
+                for (String imageUri : imageUris) {
+                    uris.add(Uri.parse(imageUri).getPath());
+                }
+                params.putStringArrayList(QzonePublish.PUBLISH_TO_QZONE_IMAGE_URL, uris);
+            }
+            if (!TextUtils.isEmpty(videoUri)) {
+                String videoPath = Uri.parse(videoUri).getPath();
+                params.putString(QzonePublish.PUBLISH_TO_QZONE_VIDEO_PATH, videoPath);
+                params.putInt(QzonePublish.PUBLISH_TO_QZONE_KEY_TYPE, QzonePublish.PUBLISH_TO_QZONE_TYPE_PUBLISHVIDEO);
+            } else {
+                params.putInt(QzonePublish.PUBLISH_TO_QZONE_KEY_TYPE, QzonePublish.PUBLISH_TO_QZONE_TYPE_PUBLISHMOOD);
+            }
+            if (tencent != null) {
+                tencent.publishToQzone(activityPluginBinding.getActivity(), params, shareListener);
+            }
+        }
+        result.success(null);
+    }
+
+    private void shareText(@NonNull MethodCall call, @NonNull Result result) {
+        int scene = call.argument(ARGUMENT_KEY_SCENE);
+        if (scene == TencentScene.SCENE_QQ) {
+            String summary = call.argument(ARGUMENT_KEY_SUMMARY);
+            Intent sendIntent = new Intent();
+            sendIntent.setAction(Intent.ACTION_SEND);
+            sendIntent.putExtra(Intent.EXTRA_TEXT, summary);
+            sendIntent.setType("text/*");
+            // 普通大众版 > 办公简洁版 > 急速轻聊版
+            PackageManager packageManager = applicationContext.getPackageManager();
+            List<PackageInfo> infos = packageManager.getInstalledPackages(0);
+            if (infos != null && !infos.isEmpty()) {
+                for (String packageName : Arrays.asList("com.tencent.mobileqq", "com.tencent.tim", "com.tencent.qqlite")) {
+                    for (PackageInfo info : infos) {
+                        if (packageName.equals(info.packageName)) {
+                            sendIntent.setPackage(packageName);
+                            if (sendIntent.resolveActivity(applicationContext.getPackageManager()) != null) {
+                                sendIntent.setComponent(new ComponentName(packageName, "com.tencent.mobileqq.activity.JumpActivity"));
+                                activityPluginBinding.getActivity().startActivity(sendIntent);
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        result.success(null);
+    }
+
+    private void shareImage(@NonNull MethodCall call, @NonNull Result result) {
+        int scene = call.argument(ARGUMENT_KEY_SCENE);
+        if (scene == TencentScene.SCENE_QQ) {
+            String imageUri = call.argument(ARGUMENT_KEY_IMAGEURI);
+            String appName = call.argument(ARGUMENT_KEY_APPNAME);
+            int extInt = call.argument(ARGUMENT_KEY_EXTINT);
+
+            Bundle params = new Bundle();
+            params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_IMAGE);
+            params.putString(QQShare.SHARE_TO_QQ_IMAGE_LOCAL_URL, Uri.parse(imageUri).getPath());
+            if (!TextUtils.isEmpty(appName)) {
+                params.putString(QQShare.SHARE_TO_QQ_APP_NAME, appName);
+            }
+            params.putInt(QQShare.SHARE_TO_QQ_EXT_INT, extInt);
+            if (tencent != null) {
+                tencent.shareToQQ(activityPluginBinding.getActivity(), params, shareListener);
+            }
+        }
+        result.success(null);
+    }
+
+    private void shareMusic(@NonNull MethodCall call, @NonNull Result result) {
+        int scene = call.argument(ARGUMENT_KEY_SCENE);
+        if (scene == TencentScene.SCENE_QQ) {
+            String title = call.argument(ARGUMENT_KEY_TITLE);
+            String summary = call.argument(ARGUMENT_KEY_SUMMARY);
+            String imageUri = call.argument(ARGUMENT_KEY_IMAGEURI);
+            String musicUrl = call.argument(ARGUMENT_KEY_MUSICURL);
+            String targetUrl = call.argument(ARGUMENT_KEY_TARGETURL);
+            String appName = call.argument(ARGUMENT_KEY_APPNAME);
+            int extInt = call.argument(ARGUMENT_KEY_EXTINT);
+
+            Bundle params = new Bundle();
+            params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_AUDIO);
+            params.putString(QQShare.SHARE_TO_QQ_TITLE, title);
+            if (!TextUtils.isEmpty(summary)) {
+                params.putString(QQShare.SHARE_TO_QQ_SUMMARY, summary);
+            }
+            if (!TextUtils.isEmpty(imageUri)) {
+                Uri uri = Uri.parse(imageUri);
+                if (TextUtils.equals(SCHEME_FILE, uri.getScheme())) {
+                    params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, uri.getPath());
+                } else {
+                    params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, imageUri);
+                }
+            }
+            params.putString(QQShare.SHARE_TO_QQ_AUDIO_URL, musicUrl);
+            params.putString(QQShare.SHARE_TO_QQ_TARGET_URL, targetUrl);
+            if (!TextUtils.isEmpty(appName)) {
+                params.putString(QQShare.SHARE_TO_QQ_APP_NAME, appName);
+            }
+            params.putInt(QQShare.SHARE_TO_QQ_EXT_INT, extInt);
+            if (tencent != null) {
+                tencent.shareToQQ(activityPluginBinding.getActivity(), params, shareListener);
+            }
+        }
+        result.success(null);
+    }
+
+    private void shareWebpage(@NonNull MethodCall call, @NonNull Result result) {
+        int scene = call.argument(ARGUMENT_KEY_SCENE);
+        String title = call.argument(ARGUMENT_KEY_TITLE);
+        String summary = call.argument(ARGUMENT_KEY_SUMMARY);
+        String imageUri = call.argument(ARGUMENT_KEY_IMAGEURI);
+        String targetUrl = call.argument(ARGUMENT_KEY_TARGETURL);
+        String appName = call.argument(ARGUMENT_KEY_APPNAME);
+        int extInt = call.argument(ARGUMENT_KEY_EXTINT);
+
+        Bundle params = new Bundle();
+        switch (scene) {
+            case TencentScene.SCENE_QQ:
+                params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_DEFAULT);
+                params.putString(QQShare.SHARE_TO_QQ_TITLE, title);
+                if (!TextUtils.isEmpty(summary)) {
+                    params.putString(QQShare.SHARE_TO_QQ_SUMMARY, summary);
+                }
+                if (!TextUtils.isEmpty(imageUri)) {
+                    Uri uri = Uri.parse(imageUri);
+                    if (TextUtils.equals(SCHEME_FILE, uri.getScheme())) {
+                        params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, uri.getPath());
+                    } else {
+                        params.putString(QQShare.SHARE_TO_QQ_IMAGE_URL, imageUri);
+                    }
+                }
+                params.putString(QQShare.SHARE_TO_QQ_TARGET_URL, targetUrl);
+                if (!TextUtils.isEmpty(appName)) {
+                    params.putString(QQShare.SHARE_TO_QQ_APP_NAME, appName);
+                }
+                params.putInt(QQShare.SHARE_TO_QQ_EXT_INT, extInt);
+                if (tencent != null) {
+                    tencent.shareToQQ(activityPluginBinding.getActivity(), params, shareListener);
+                }
+                break;
+            case TencentScene.SCENE_QZONE:
+                params.putInt(QzoneShare.SHARE_TO_QZONE_KEY_TYPE, QzoneShare.SHARE_TO_QZONE_TYPE_IMAGE_TEXT);
+                params.putString(QzoneShare.SHARE_TO_QQ_TITLE, title);
+                if (!TextUtils.isEmpty(summary)) {
+                    params.putString(QzoneShare.SHARE_TO_QQ_SUMMARY, summary);
+                }
+                if (!TextUtils.isEmpty(imageUri)) {
+                    ArrayList<String> uris = new ArrayList<>();
+                    Uri uri = Uri.parse(imageUri);
+                    if (TextUtils.equals(SCHEME_FILE, uri.getScheme())) {
+                        uris.add(uri.getPath());
+                    } else {
+                        uris.add(imageUri);
+                    }
+                    params.putStringArrayList(QzoneShare.SHARE_TO_QQ_IMAGE_URL, uris);
+                }
+                params.putString(QzoneShare.SHARE_TO_QQ_TARGET_URL, targetUrl);
+                if (tencent != null) {
+                    tencent.shareToQzone(activityPluginBinding.getActivity(), params, shareListener);
+                }
+                break;
+            default:
+                break;
+        }
+        result.success(null);
+    }
+
+    private IUiListener shareListener = new IUiListener() {
+        @Override
+        public void onComplete(Object o) {
+            Map<String, Object> map = new HashMap<>();
+            try {
+                if (o != null && o instanceof JSONObject) {
+                    JSONObject object = (JSONObject) o;
+                    int ret = !object.isNull(ARGUMENT_KEY_RESULT_RET) ? object.getInt(ARGUMENT_KEY_RESULT_RET) : TencentRetCode.RET_FAILED;
+                    String msg = !object.isNull(ARGUMENT_KEY_RESULT_MSG) ? object.getString(ARGUMENT_KEY_RESULT_MSG) : null;
+                    if (ret == TencentRetCode.RET_SUCCESS) {
+                        map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_SUCCESS);
+                    } else {
+                        map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+                        map.put(ARGUMENT_KEY_RESULT_MSG, msg);
+                    }
+                }
+            } catch (JSONException e) {
+                map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+                map.put(ARGUMENT_KEY_RESULT_MSG, e.getMessage());
+            }
+            if (channel != null) {
+                channel.invokeMethod(METHOD_ONSHARERESP, map);
+            }
+        }
+
+        @Override
+        public void onError(UiError error) {
+            Map<String, Object> map = new HashMap<>();
+            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_COMMON);
+            map.put(ARGUMENT_KEY_RESULT_MSG, error.errorMessage);
+            if (channel != null) {
+                channel.invokeMethod(METHOD_ONSHARERESP, map);
+            }
+        }
+
+        @Override
+        public void onCancel() {
+            Map<String, Object> map = new HashMap<>();
+            map.put(ARGUMENT_KEY_RESULT_RET, TencentRetCode.RET_USERCANCEL);
+            if (channel != null) {
+                channel.invokeMethod(METHOD_ONSHARERESP, map);
+            }
+        }
+
+        @Override
+        public void onWarning(int code) {
+            if (code == Constants.ERROR_NO_AUTHORITY) {
+                // 如果authorities为空，sdk会回调这个接口，提醒开发者适配FileProvider
+            }
+        }
+    };
+
+    // ---
+
+    private static boolean isAppInstalled(Context context, String packageName) {
+        PackageInfo packageInfo = null;
+        try {
+            packageInfo = context.getPackageManager().getPackageInfo(packageName, 0);
+        } catch (PackageManager.NameNotFoundException e) {
+        }
+        return packageInfo != null;
     }
 }
diff --git a/example/.gitignore b/example/.gitignore
index 1ba9c33..0fa6b67 100644
--- a/example/.gitignore
+++ b/example/.gitignore
@@ -22,6 +22,7 @@
 
 # Flutter/Dart/Pub related
 **/doc/api/
+**/ios/Flutter/.last_build_id
 .dart_tool/
 .flutter-plugins
 .flutter-plugins-dependencies
@@ -39,5 +40,7 @@ app.*.symbols
 # Obfuscation related
 app.*.map.json
 
-# Exceptions to above rules.
-!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
diff --git a/example/android/.gitignore b/example/android/.gitignore
index bc2100d..0a741cb 100644
--- a/example/android/.gitignore
+++ b/example/android/.gitignore
@@ -5,3 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
diff --git a/example/android/build.gradle b/example/android/build.gradle
index 0baed69..c9e3db0 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -5,7 +5,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.4'
+        classpath 'com.android.tools.build:gradle:4.1.0'
     }
 }
 
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
index 296b146..bc6a58a 100644
--- a/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/android/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 248cc55..901dfce 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -2,12 +2,16 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
-import 'package:okhttp_kit/okhttp_kit.dart';
-import 'package:path/path.dart' as path;
-import 'package:path_provider/path_provider.dart' as path_provider;
+import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:tencent_kit/tencent_kit.dart';
 
-void main() => runApp(MyApp());
+const String _TENCENT_APPID = 'your tencent appId';
+
+void main() {
+  WidgetsFlutterBinding.ensureInitialized();
+  Tencent.instance.registerApp(appId: _TENCENT_APPID);
+  runApp(MyApp());
+}
 
 class MyApp extends StatelessWidget {
   @override
@@ -26,39 +30,33 @@ class Home extends StatefulWidget {
 }
 
 class _HomeState extends State<Home> {
-  static const String _TENCENT_APPID = 'your tencent appId';
+  late final StreamSubscription<TencentLoginResp> _login =
+      Tencent.instance.loginResp().listen(_listenLogin);
+  late final StreamSubscription<TencentSdkResp> _share =
+      Tencent.instance.shareResp().listen(_listenShare);
 
-  final Tencent _tencent = Tencent()..registerApp(appId: _TENCENT_APPID);
-
-  StreamSubscription<TencentLoginResp> _login;
-  StreamSubscription<TencentShareResp> _share;
-
-  TencentLoginResp _loginResp;
+  TencentLoginResp? _loginResp;
 
   @override
   void initState() {
     super.initState();
-    _login = _tencent.loginResp().listen(_listenLogin);
-    _share = _tencent.shareResp().listen(_listenShare);
   }
 
   void _listenLogin(TencentLoginResp resp) {
     _loginResp = resp;
-    String content = 'login: ${resp.openid} - ${resp.accessToken}';
+    final String content = 'login: ${resp.openid} - ${resp.accessToken}';
     _showTips('登录', content);
   }
 
-  void _listenShare(TencentShareResp resp) {
-    String content = 'share: ${resp.ret} - ${resp.msg}';
+  void _listenShare(TencentSdkResp resp) {
+    final String content = 'share: ${resp.ret} - ${resp.msg}';
     _showTips('分享', content);
   }
 
   @override
   void dispose() {
-    _login?.cancel();
-    _login = null;
-    _share?.cancel();
-    _share = null;
+    _login.cancel();
+    _share.cancel();
     super.dispose();
   }
 
@@ -73,15 +71,15 @@ class _HomeState extends State<Home> {
           ListTile(
             title: const Text('环境检查'),
             onTap: () async {
-              String content =
-                  'QQ install: ${await _tencent.isQQInstalled()}\nTIM install: ${await _tencent.isTIMInstalled()}';
+              final String content =
+                  'QQ install: ${await Tencent.instance.isQQInstalled()}\nTIM install: ${await Tencent.instance.isTIMInstalled()}';
               _showTips('环境检查', content);
             },
           ),
           ListTile(
             title: const Text('登录'),
             onTap: () {
-              _tencent.login(
+              Tencent.instance.login(
                 scope: <String>[TencentScope.GET_SIMPLE_USERINFO],
               );
             },
@@ -89,13 +87,13 @@ class _HomeState extends State<Home> {
           ListTile(
             title: const Text('获取用户信息'),
             onTap: () async {
-              if (_loginResp != null &&
-                  _loginResp.isSuccessful &&
-                  !_loginResp.isExpired) {
-                TencentUserInfoResp userInfo = await _tencent.getUserInfo(
+              if ((_loginResp?.isSuccessful ?? false) &&
+                  !(_loginResp!.isExpired ?? true)) {
+                final TencentUserInfoResp userInfo =
+                    await Tencent.instance.getUserInfo(
                   appId: _TENCENT_APPID,
-                  openid: _loginResp.openid,
-                  accessToken: _loginResp.accessToken,
+                  openid: _loginResp!.openid!,
+                  accessToken: _loginResp!.accessToken!,
                 );
                 if (userInfo.isSuccessful) {
                   _showTips('用户信息',
@@ -109,11 +107,11 @@ class _HomeState extends State<Home> {
           ListTile(
             title: const Text('获取UnionID'),
             onTap: () async {
-              if (_loginResp != null &&
-                  _loginResp.isSuccessful &&
-                  !_loginResp.isExpired) {
-                TencentUnionidResp unionid = await _tencent.getUnionId(
-                  accessToken: _loginResp.accessToken,
+              if ((_loginResp?.isSuccessful ?? false) &&
+                  !(_loginResp!.isExpired ?? true)) {
+                final TencentUnionidResp unionid =
+                    await Tencent.instance.getUnionId(
+                  accessToken: _loginResp!.accessToken!,
                 );
                 if (unionid.isSuccessful) {
                   _showTips('UnionID',
@@ -128,7 +126,7 @@ class _HomeState extends State<Home> {
           ListTile(
             title: const Text('分享说说'),
             onTap: () {
-              _tencent.shareMood(
+              Tencent.instance.shareMood(
                 scene: TencentScene.SCENE_QZONE,
                 summary: '分享测试',
               );
@@ -137,7 +135,7 @@ class _HomeState extends State<Home> {
           ListTile(
             title: const Text('文本分享'),
             onTap: () {
-              _tencent.shareText(
+              Tencent.instance.shareText(
                 scene: TencentScene.SCENE_QQ,
                 summary: '分享测试',
               );
@@ -146,37 +144,18 @@ class _HomeState extends State<Home> {
           ListTile(
             title: const Text('图片分享'),
             onTap: () async {
-              OkHttpClient client = OkHttpClientBuilder().build();
-              Response resp = await client
-                  .newCall(RequestBuilder()
-                      .get()
-                      .url(HttpUrl.parse(
-                          'https://www.baidu.com/img/bd_logo1.png?where=super'))
-                      .build())
-                  .enqueue();
-              if (resp.isSuccessful()) {
-                Directory saveDir = Platform.isIOS
-                    ? await path_provider.getApplicationDocumentsDirectory()
-                    : await path_provider.getExternalStorageDirectory();
-                File saveFile = File(path.join(saveDir.path, 'timg.png'));
-                if (!saveFile.existsSync()) {
-                  saveFile.createSync(recursive: true);
-                  saveFile.writeAsBytesSync(
-                    await resp.body().bytes(),
-                    flush: true,
-                  );
-                }
-                await _tencent.shareImage(
-                  scene: TencentScene.SCENE_QQ,
-                  imageUri: Uri.file(saveFile.path),
-                );
-              }
+              final File file = await DefaultCacheManager().getSingleFile(
+                  'https://www.baidu.com/img/bd_logo1.png?where=super');
+              await Tencent.instance.shareImage(
+                scene: TencentScene.SCENE_QQ,
+                imageUri: Uri.file(file.path),
+              );
             },
           ),
           ListTile(
             title: const Text('网页分享'),
             onTap: () {
-              _tencent.shareWebpage(
+              Tencent.instance.shareWebpage(
                 scene: TencentScene.SCENE_QQ,
                 title: 'title',
                 targetUrl: 'https://www.baidu.com/',
diff --git a/example/pubspec.lock b/example/pubspec.lock
index f780ecc..3007fb3 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -1,212 +1,233 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.2"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.5.0-nullsafety.1"
+    version: "2.5.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.15.0-nullsafety.3"
-  convert:
-    dependency: transitive
-    description:
-      name: convert
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.1"
+    version: "1.15.0"
   crypto:
     dependency: transitive
     description:
       name: crypto
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.5"
+    version: "3.0.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.1.3"
+    version: "1.0.2"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   ffi:
     dependency: transitive
     description:
       name: ffi
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.1.3"
+    version: "1.0.0"
   file:
     dependency: transitive
     description:
       name: file
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "5.2.1"
-  fixnum:
-    dependency: transitive
-    description:
-      name: fixnum
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.10.11"
+    version: "6.1.0"
   flutter:
     dependency: "direct main"
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_cache_manager:
+    dependency: "direct main"
+    description:
+      name: flutter_cache_manager
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.0-nullsafety.1"
   flutter_test:
     dependency: "direct dev"
     description: flutter
     source: sdk
     version: "0.0.0"
-  intl:
+  http:
     dependency: transitive
     description:
-      name: intl
+      name: http
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.16.1"
+    version: "0.13.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.0.0"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.1"
   json_annotation:
     dependency: transitive
     description:
       name: json_annotation
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.1"
+    version: "4.0.0"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.10-nullsafety.1"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.0-nullsafety.3"
-  okhttp_kit:
-    dependency: "direct main"
-    description:
-      name: okhttp_kit
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.0.2"
+    version: "1.3.0"
   path:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: path
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.8.0-nullsafety.1"
+    version: "1.8.0"
   path_provider:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: path_provider
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.6.27"
+    version: "2.0.1"
   path_provider_linux:
     dependency: transitive
     description:
       name: path_provider_linux
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.0.1+2"
+    version: "2.0.0"
   path_provider_macos:
     dependency: transitive
     description:
       name: path_provider_macos
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.0.4+8"
+    version: "2.0.0"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.4"
+    version: "2.0.1"
   path_provider_windows:
     dependency: transitive
     description:
       name: path_provider_windows
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.0.4+3"
+    version: "2.0.0"
   pedantic:
     dependency: "direct dev"
     description:
       name: pedantic
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.9.2"
+    version: "1.11.0"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.0.2"
   platform:
     dependency: transitive
     description:
       name: platform
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.2.1"
+    version: "3.0.0"
   plugin_platform_interface:
     dependency: transitive
     description:
       name: plugin_platform_interface
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.3"
+    version: "2.0.0"
   process:
     dependency: transitive
     description:
       name: process
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.0.13"
+    version: "4.1.0"
+  rxdart:
+    dependency: transitive
+    description:
+      name: rxdart
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.26.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -218,77 +239,112 @@ packages:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.8.0-nullsafety.2"
+    version: "1.8.0"
+  sqflite:
+    dependency: transitive
+    description:
+      name: sqflite
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.0+3"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.0+2"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.10.0-nullsafety.1"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
+  synchronized:
+    dependency: transitive
+    description:
+      name: synchronized
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.0"
   tencent_kit:
     dependency: "direct main"
     description:
       path: ".."
       relative: true
     source: path
-    version: "2.0.1"
+    version: "2.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.19-nullsafety.2"
+    version: "0.2.19"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.1"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0"
   win32:
     dependency: transitive
     description:
       name: win32
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.4+1"
+    version: "2.0.4"
   xdg_directories:
     dependency: transitive
     description:
       name: xdg_directories
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.1.2"
+    version: "0.2.0"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "5.0.2"
 sdks:
-  dart: ">=2.10.0-110 <2.11.0"
-  flutter: ">=1.12.13+hotfix.5 <2.0.0"
+  dart: ">=2.12.0 <3.0.0"
+  flutter: ">=1.24.0-10"
diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index 32147b1..2368a4a 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -1,12 +1,14 @@
 name: tencent_kit_example
 description: Demonstrates how to use the tencent_kit plugin.
-version: 1.0.0+1000
+
 # The following line prevents the package from being accidentally published to
 # pub.dev using `pub publish`. This is preferred for private packages.
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
+version: 1.0.0+100
+
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
   flutter:
@@ -22,12 +24,9 @@ dependencies:
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.3
+  cupertino_icons: ^1.0.2
 
-  path: ^1.6.4
-  path_provider: ^1.4.0
-
-  okhttp_kit: ^1.0.0
+  flutter_cache_manager: ^3.0.0-nullsafety.1
 
 dev_dependencies:
   flutter_test:
diff --git a/ios/tencent_kit.podspec b/ios/tencent_kit.podspec
index 7d7aaa2..c1519b1 100644
--- a/ios/tencent_kit.podspec
+++ b/ios/tencent_kit.podspec
@@ -4,7 +4,7 @@
 #
 Pod::Spec.new do |s|
   s.name             = 'tencent_kit'
-  s.version          = '2.0.1'
+  s.version          = '2.1.0'
   s.summary          = 'A powerful Flutter plugin allowing developers to auth/share with natvie Android & iOS Tencent SDKs.'
   s.description      = <<-DESC
 A powerful Flutter plugin allowing developers to auth/share with natvie Android & iOS Tencent SDKs.
diff --git a/lib/src/model/api/tencent_api_resp.dart b/lib/src/model/api/tencent_api_resp.dart
index e3ae0c3..e9d7c50 100644
--- a/lib/src/model/api/tencent_api_resp.dart
+++ b/lib/src/model/api/tencent_api_resp.dart
@@ -2,7 +2,7 @@ import 'package:json_annotation/json_annotation.dart';
 
 abstract class TencentApiResp {
   const TencentApiResp({
-    this.ret,
+    required this.ret,
     this.msg,
   });
 
@@ -14,7 +14,7 @@ abstract class TencentApiResp {
     defaultValue: RET_SUCCESS,
   )
   final int ret;
-  final String msg;
+  final String? msg;
 
   bool get isSuccessful => ret == RET_SUCCESS;
 }
diff --git a/lib/src/model/api/tencent_user_info_resp.dart b/lib/src/model/api/tencent_user_info_resp.dart
index 9219ad2..1035f6d 100644
--- a/lib/src/model/api/tencent_user_info_resp.dart
+++ b/lib/src/model/api/tencent_user_info_resp.dart
@@ -9,8 +9,8 @@ part 'tencent_user_info_resp.g.dart';
 )
 class TencentUserInfoResp extends TencentApiResp {
   const TencentUserInfoResp({
-    int ret,
-    String msg,
+    required int ret,
+    String? msg,
     this.isLost,
     this.nickname,
     this.gender,
@@ -36,58 +36,58 @@ class TencentUserInfoResp extends TencentApiResp {
   factory TencentUserInfoResp.fromJson(Map<String, dynamic> json) =>
       _$TencentUserInfoRespFromJson(json);
 
-  final int isLost;
-  final String nickname;
-  final String gender; // 男/女
-  final int genderType; // 男/女 - 1
-  final String province;
-  final String city;
-  final String year;
-  final String constellation;
-  final String figureurl;
+  final int? isLost;
+  final String? nickname;
+  final String? gender; // 男/女
+  final int? genderType; // 男/女 - 1
+  final String? province;
+  final String? city;
+  final String? year;
+  final String? constellation;
+  final String? figureurl;
   @JsonKey(
     name: 'figureurl_1',
   )
-  final String figureurl1;
+  final String? figureurl1;
   @JsonKey(
     name: 'figureurl_2',
   )
-  final String figureurl2;
-  final String figureurlQq; // 140 * 140
+  final String? figureurl2;
+  final String? figureurlQq; // 140 * 140
   @JsonKey(
     name: 'figureurl_qq_1',
   )
-  final String figureurlQq1; // 大小为40×40像素的QQ头像URL。
+  final String? figureurlQq1; // 大小为40×40像素的QQ头像URL。
   @JsonKey(
     name: 'figureurl_qq_2',
   )
-  final String
+  final String?
       figureurlQq2; // 大小为100×100像素的QQ头像URL。需要注意，不是所有的用户都拥有QQ的100x100的头像，但40x40像素则是一定会有。
-  final String figureurlType;
-  final String isYellowVip;
-  final String vip;
-  final String yellowVipLevel;
-  final String level;
-  final String isYellowYearVip;
+  final String? figureurlType;
+  final String? isYellowVip;
+  final String? vip;
+  final String? yellowVipLevel;
+  final String? level;
+  final String? isYellowYearVip;
 
   bool get isMale => gender == '男';
 
   bool get isFemale => gender == '女';
 
-  String get headImgUrl {
-    if (figureurlQq != null && figureurlQq.isNotEmpty) {
+  String? get headImgUrl {
+    if (figureurlQq?.isNotEmpty ?? false) {
       return figureurlQq;
     }
-    if (figureurlQq2 != null && figureurlQq2.isNotEmpty) {
+    if (figureurlQq2?.isNotEmpty ?? false) {
       return figureurlQq2;
     }
-    if (figureurlQq1 != null && figureurlQq1.isNotEmpty) {
+    if (figureurlQq1?.isNotEmpty ?? false) {
       return figureurlQq1;
     }
-    if (figureurl2 != null && figureurl2.isNotEmpty) {
+    if (figureurl2?.isNotEmpty ?? false) {
       return figureurl2;
     }
-    if (figureurl1 != null && figureurl1.isNotEmpty) {
+    if (figureurl1?.isNotEmpty ?? false) {
       return figureurl1;
     }
     return figureurl;
diff --git a/lib/src/model/api/tencent_user_info_resp.g.dart b/lib/src/model/api/tencent_user_info_resp.g.dart
index ce5bcc4..e54f602 100644
--- a/lib/src/model/api/tencent_user_info_resp.g.dart
+++ b/lib/src/model/api/tencent_user_info_resp.g.dart
@@ -8,28 +8,28 @@ part of 'tencent_user_info_resp.dart';
 
 TencentUserInfoResp _$TencentUserInfoRespFromJson(Map<String, dynamic> json) {
   return TencentUserInfoResp(
-    ret: json['ret'] as int ?? 0,
-    msg: json['msg'] as String,
-    isLost: json['is_lost'] as int,
-    nickname: json['nickname'] as String,
-    gender: json['gender'] as String,
-    genderType: json['gender_type'] as int,
-    province: json['province'] as String,
-    city: json['city'] as String,
-    year: json['year'] as String,
-    constellation: json['constellation'] as String,
-    figureurl: json['figureurl'] as String,
-    figureurl1: json['figureurl_1'] as String,
-    figureurl2: json['figureurl_2'] as String,
-    figureurlQq: json['figureurl_qq'] as String,
-    figureurlQq1: json['figureurl_qq_1'] as String,
-    figureurlQq2: json['figureurl_qq_2'] as String,
-    figureurlType: json['figureurl_type'] as String,
-    isYellowVip: json['is_yellow_vip'] as String,
-    vip: json['vip'] as String,
-    yellowVipLevel: json['yellow_vip_level'] as String,
-    level: json['level'] as String,
-    isYellowYearVip: json['is_yellow_year_vip'] as String,
+    ret: json['ret'] as int? ?? 0,
+    msg: json['msg'] as String?,
+    isLost: json['is_lost'] as int?,
+    nickname: json['nickname'] as String?,
+    gender: json['gender'] as String?,
+    genderType: json['gender_type'] as int?,
+    province: json['province'] as String?,
+    city: json['city'] as String?,
+    year: json['year'] as String?,
+    constellation: json['constellation'] as String?,
+    figureurl: json['figureurl'] as String?,
+    figureurl1: json['figureurl_1'] as String?,
+    figureurl2: json['figureurl_2'] as String?,
+    figureurlQq: json['figureurl_qq'] as String?,
+    figureurlQq1: json['figureurl_qq_1'] as String?,
+    figureurlQq2: json['figureurl_qq_2'] as String?,
+    figureurlType: json['figureurl_type'] as String?,
+    isYellowVip: json['is_yellow_vip'] as String?,
+    vip: json['vip'] as String?,
+    yellowVipLevel: json['yellow_vip_level'] as String?,
+    level: json['level'] as String?,
+    isYellowYearVip: json['is_yellow_year_vip'] as String?,
   );
 }
 
diff --git a/lib/src/model/sdk/tencent_login_resp.dart b/lib/src/model/sdk/tencent_login_resp.dart
index 2202550..c1adb20 100644
--- a/lib/src/model/sdk/tencent_login_resp.dart
+++ b/lib/src/model/sdk/tencent_login_resp.dart
@@ -9,8 +9,8 @@ part 'tencent_login_resp.g.dart';
 )
 class TencentLoginResp extends TencentSdkResp {
   const TencentLoginResp({
-    int ret,
-    String msg,
+    required int ret,
+    String? msg,
     this.openid,
     this.accessToken,
     this.expiresIn,
@@ -20,13 +20,15 @@ class TencentLoginResp extends TencentSdkResp {
   factory TencentLoginResp.fromJson(Map<String, dynamic> json) =>
       _$TencentLoginRespFromJson(json);
 
-  final String openid;
-  final String accessToken;
-  final int expiresIn;
-  final int createAt;
+  final String? openid;
+  final String? accessToken;
+  final int? expiresIn;
+  final int? createAt;
 
-  bool get isExpired =>
-      DateTime.now().millisecondsSinceEpoch - createAt >= expiresIn * 1000;
+  bool? get isExpired => isSuccessful
+      ? DateTime.now().millisecondsSinceEpoch - createAt! >= expiresIn! * 1000
+      : null;
 
+  @override
   Map<String, dynamic> toJson() => _$TencentLoginRespToJson(this);
 }
diff --git a/lib/src/model/sdk/tencent_login_resp.g.dart b/lib/src/model/sdk/tencent_login_resp.g.dart
index 399b5dc..c2ec9a9 100644
--- a/lib/src/model/sdk/tencent_login_resp.g.dart
+++ b/lib/src/model/sdk/tencent_login_resp.g.dart
@@ -8,12 +8,12 @@ part of 'tencent_login_resp.dart';
 
 TencentLoginResp _$TencentLoginRespFromJson(Map<String, dynamic> json) {
   return TencentLoginResp(
-    ret: json['ret'] as int ?? 0,
-    msg: json['msg'] as String,
-    openid: json['openid'] as String,
-    accessToken: json['access_token'] as String,
-    expiresIn: json['expires_in'] as int,
-    createAt: json['create_at'] as int,
+    ret: json['ret'] as int? ?? 0,
+    msg: json['msg'] as String?,
+    openid: json['openid'] as String?,
+    accessToken: json['access_token'] as String?,
+    expiresIn: json['expires_in'] as int?,
+    createAt: json['create_at'] as int?,
   );
 }
 
diff --git a/lib/src/model/sdk/tencent_sdk_resp.dart b/lib/src/model/sdk/tencent_sdk_resp.dart
index 9c6791e..8c33f91 100644
--- a/lib/src/model/sdk/tencent_sdk_resp.dart
+++ b/lib/src/model/sdk/tencent_sdk_resp.dart
@@ -1,11 +1,20 @@
 import 'package:json_annotation/json_annotation.dart';
 
-abstract class TencentSdkResp {
+part 'tencent_sdk_resp.g.dart';
+
+@JsonSerializable(
+  explicitToJson: true,
+  fieldRename: FieldRename.snake,
+)
+class TencentSdkResp {
   const TencentSdkResp({
-    this.ret,
+    required this.ret,
     this.msg,
   });
 
+  factory TencentSdkResp.fromJson(Map<String, dynamic> json) =>
+      _$TencentSdkRespFromJson(json);
+
   /// 网络请求成功发送至服务器，并且服务器返回数据格式正确
   /// 这里包括所请求业务操作失败的情况，例如没有授权等原因导致
   static const int RET_SUCCESS = 0;
@@ -21,9 +30,11 @@ abstract class TencentSdkResp {
     defaultValue: RET_SUCCESS,
   )
   final int ret;
-  final String msg;
+  final String? msg;
 
   bool get isSuccessful => ret == RET_SUCCESS;
 
   bool get isCancelled => ret == RET_USERCANCEL;
+
+  Map<String, dynamic> toJson() => _$TencentSdkRespToJson(this);
 }
diff --git a/lib/src/model/sdk/tencent_share_resp.g.dart b/lib/src/model/sdk/tencent_sdk_resp.g.dart
similarity index 53%
rename from lib/src/model/sdk/tencent_share_resp.g.dart
rename to lib/src/model/sdk/tencent_sdk_resp.g.dart
index 56bb334..8ed8f1b 100644
--- a/lib/src/model/sdk/tencent_share_resp.g.dart
+++ b/lib/src/model/sdk/tencent_sdk_resp.g.dart
@@ -1,19 +1,19 @@
 // GENERATED CODE - DO NOT MODIFY BY HAND
 
-part of 'tencent_share_resp.dart';
+part of 'tencent_sdk_resp.dart';
 
 // **************************************************************************
 // JsonSerializableGenerator
 // **************************************************************************
 
-TencentShareResp _$TencentShareRespFromJson(Map<String, dynamic> json) {
-  return TencentShareResp(
-    ret: json['ret'] as int ?? 0,
-    msg: json['msg'] as String,
+TencentSdkResp _$TencentSdkRespFromJson(Map<String, dynamic> json) {
+  return TencentSdkResp(
+    ret: json['ret'] as int? ?? 0,
+    msg: json['msg'] as String?,
   );
 }
 
-Map<String, dynamic> _$TencentShareRespToJson(TencentShareResp instance) =>
+Map<String, dynamic> _$TencentSdkRespToJson(TencentSdkResp instance) =>
     <String, dynamic>{
       'ret': instance.ret,
       'msg': instance.msg,
diff --git a/lib/src/model/sdk/tencent_share_resp.dart b/lib/src/model/sdk/tencent_share_resp.dart
deleted file mode 100644
index 0265dc9..0000000
--- a/lib/src/model/sdk/tencent_share_resp.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-import 'package:json_annotation/json_annotation.dart';
-import 'package:tencent_kit/src/model/sdk/tencent_sdk_resp.dart';
-
-part 'tencent_share_resp.g.dart';
-
-@JsonSerializable(
-  explicitToJson: true,
-  fieldRename: FieldRename.snake,
-)
-class TencentShareResp extends TencentSdkResp {
-  const TencentShareResp({
-    int ret,
-    String msg,
-  }) : super(ret: ret, msg: msg);
-
-  factory TencentShareResp.fromJson(Map<String, dynamic> json) =>
-      _$TencentShareRespFromJson(json);
-
-  Map<String, dynamic> toJson() => _$TencentShareRespToJson(this);
-}
diff --git a/lib/src/model/unionid/tencent_unionid_resp.dart b/lib/src/model/unionid/tencent_unionid_resp.dart
index aeeaf51..b7c9deb 100644
--- a/lib/src/model/unionid/tencent_unionid_resp.dart
+++ b/lib/src/model/unionid/tencent_unionid_resp.dart
@@ -8,7 +8,7 @@ part 'tencent_unionid_resp.g.dart';
 )
 class TencentUnionidResp {
   const TencentUnionidResp({
-    this.error,
+    required this.error,
     this.errorDescription,
     this.clientId,
     this.openid,
@@ -22,10 +22,10 @@ class TencentUnionidResp {
     defaultValue: ERROR_SUCCESS,
   )
   final int error;
-  final String errorDescription;
-  final String clientId;
-  final String openid;
-  final String unionid;
+  final String? errorDescription;
+  final String? clientId;
+  final String? openid;
+  final String? unionid;
 
   static const int ERROR_SUCCESS = 0;
 
diff --git a/lib/src/model/unionid/tencent_unionid_resp.g.dart b/lib/src/model/unionid/tencent_unionid_resp.g.dart
index 57147d4..7b4bb07 100644
--- a/lib/src/model/unionid/tencent_unionid_resp.g.dart
+++ b/lib/src/model/unionid/tencent_unionid_resp.g.dart
@@ -8,11 +8,11 @@ part of 'tencent_unionid_resp.dart';
 
 TencentUnionidResp _$TencentUnionidRespFromJson(Map<String, dynamic> json) {
   return TencentUnionidResp(
-    error: json['error'] as int ?? 0,
-    errorDescription: json['error_description'] as String,
-    clientId: json['client_id'] as String,
-    openid: json['openid'] as String,
-    unionid: json['unionid'] as String,
+    error: json['error'] as int? ?? 0,
+    errorDescription: json['error_description'] as String?,
+    clientId: json['client_id'] as String?,
+    openid: json['openid'] as String?,
+    unionid: json['unionid'] as String?,
   );
 }
 
diff --git a/lib/src/tencent.dart b/lib/src/tencent.dart
index 635c01b..db82c73 100644
--- a/lib/src/tencent.dart
+++ b/lib/src/tencent.dart
@@ -2,20 +2,21 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:tencent_kit/src/model/api/tencent_user_info_resp.dart';
 import 'package:tencent_kit/src/model/sdk/tencent_login_resp.dart';
-import 'package:tencent_kit/src/model/sdk/tencent_share_resp.dart';
+import 'package:tencent_kit/src/model/sdk/tencent_sdk_resp.dart';
 import 'package:tencent_kit/src/model/unionid/tencent_unionid_resp.dart';
 import 'package:tencent_kit/src/tencent_constant.dart';
 
 ///
 class Tencent {
   ///
-  Tencent() {
-    _channel.setMethodCallHandler(_handleMethod);
-  }
+  Tencent._();
+
+  static Tencent get instance => _instance;
+
+  static final Tencent _instance = Tencent._();
 
   static const String _METHOD_REGISTERAPP = 'registerApp';
   static const String _METHOD_ISQQINSTALLED = 'isQQInstalled';
@@ -47,14 +48,15 @@ class Tencent {
 
   static const String _SCHEME_FILE = 'file';
 
-  final MethodChannel _channel =
-      const MethodChannel('v7lin.github.io/tencent_kit');
+  late final MethodChannel _channel =
+      const MethodChannel('v7lin.github.io/tencent_kit')
+        ..setMethodCallHandler(_handleMethod);
 
   final StreamController<TencentLoginResp> _loginRespStreamController =
       StreamController<TencentLoginResp>.broadcast();
 
-  final StreamController<TencentShareResp> _shareRespStreamController =
-      StreamController<TencentShareResp>.broadcast();
+  final StreamController<TencentSdkResp> _shareRespStreamController =
+      StreamController<TencentSdkResp>.broadcast();
 
   Future<dynamic> _handleMethod(MethodCall call) async {
     switch (call.method) {
@@ -63,7 +65,7 @@ class Tencent {
             (call.arguments as Map<dynamic, dynamic>).cast<String, dynamic>()));
         break;
       case _METHOD_ONSHARERESP:
-        _shareRespStreamController.add(TencentShareResp.fromJson(
+        _shareRespStreamController.add(TencentSdkResp.fromJson(
             (call.arguments as Map<dynamic, dynamic>).cast<String, dynamic>()));
         break;
     }
@@ -71,10 +73,9 @@ class Tencent {
 
   /// 向 Open_SDK 注册
   Future<void> registerApp({
-    @required String appId,
-    String universalLink,
+    required String appId,
+    String? universalLink,
   }) {
-    assert(appId?.isNotEmpty ?? false);
     return _channel.invokeMethod<void>(
       _METHOD_REGISTERAPP,
       <String, dynamic>{
@@ -91,25 +92,24 @@ class Tencent {
   }
 
   /// 分享
-  Stream<TencentShareResp> shareResp() {
+  Stream<TencentSdkResp> shareResp() {
     return _shareRespStreamController.stream;
   }
 
   /// 检查QQ是否已安装
-  Future<bool> isQQInstalled() {
-    return _channel.invokeMethod<bool>(_METHOD_ISQQINSTALLED);
+  Future<bool> isQQInstalled() async {
+    return await _channel.invokeMethod<bool>(_METHOD_ISQQINSTALLED) ?? false;
   }
 
   /// 检查QQ是否已安装
-  Future<bool> isTIMInstalled() {
-    return _channel.invokeMethod<bool>(_METHOD_ISTIMINSTALLED);
+  Future<bool> isTIMInstalled() async {
+    return await _channel.invokeMethod<bool>(_METHOD_ISTIMINSTALLED) ?? false;
   }
 
   /// 登录
   Future<void> login({
-    @required List<String> scope,
+    required List<String> scope,
   }) {
-    assert(scope?.isNotEmpty ?? false);
     return _channel.invokeMethod<void>(
       _METHOD_LOGIN,
       <String, dynamic>{
@@ -126,13 +126,10 @@ class Tencent {
   /// 用户信息
   /// https://wiki.connect.qq.com/get_user_info
   Future<TencentUserInfoResp> getUserInfo({
-    @required String appId,
-    @required String openid,
-    @required String accessToken,
+    required String appId,
+    required String openid,
+    required String accessToken,
   }) {
-    assert(appId?.isNotEmpty ?? false);
-    assert(openid?.isNotEmpty ?? false);
-    assert(accessToken?.isNotEmpty ?? false);
     return HttpClient()
         .getUrl(Uri.parse(
             'https://graph.qq.com/user/get_user_info?access_token=$accessToken&oauth_consumer_key=$appId&openid=$openid'))
@@ -140,9 +137,10 @@ class Tencent {
       return request.close();
     }).then((HttpClientResponse response) async {
       if (response.statusCode == HttpStatus.ok) {
-        ContentType contentType = response.headers.contentType;
-        Encoding encoding = Encoding.getByName(contentType?.charset) ?? utf8;
-        String content = await encoding.decodeStream(response);
+        final ContentType? contentType = response.headers.contentType;
+        final Encoding encoding =
+            Encoding.getByName(contentType?.charset) ?? utf8;
+        final String content = await encoding.decodeStream(response);
         return TencentUserInfoResp.fromJson(
             json.decode(content) as Map<String, dynamic>);
       }
@@ -154,10 +152,9 @@ class Tencent {
   /// UnionID
   /// https://wiki.connect.qq.com/unionid%E4%BB%8B%E7%BB%8D
   Future<TencentUnionidResp> getUnionId({
-    @required String accessToken,
+    required String accessToken,
     String unionid = '1',
   }) {
-    assert(accessToken?.isNotEmpty ?? false);
     return HttpClient()
         .getUrl(Uri.parse(
             'https://graph.qq.com/oauth2.0/me?access_token=$accessToken&unionid=$unionid'))
@@ -165,16 +162,19 @@ class Tencent {
       return request.close();
     }).then((HttpClientResponse response) async {
       if (response.statusCode == HttpStatus.ok) {
-        ContentType contentType = response.headers.contentType;
-        Encoding encoding = Encoding.getByName(contentType?.charset) ?? utf8;
-        String callback = await encoding.decodeStream(response);
+        final ContentType? contentType = response.headers.contentType;
+        final Encoding encoding =
+            Encoding.getByName(contentType?.charset) ?? utf8;
+        final String callback = await encoding.decodeStream(response);
         // 腾讯有毒 callback( $json );
-        RegExp exp = RegExp(r'callback\( (.*) \)\;');
-        Match match = exp.firstMatch(callback);
-        if (match.groupCount == 1) {
-          String content = match.group(1);
-          return TencentUnionidResp.fromJson(
-              json.decode(content) as Map<String, dynamic>);
+        final RegExp exp = RegExp(r'callback\( (.*) \)\;');
+        final Match? match = exp.firstMatch(callback);
+        if (match?.groupCount == 1) {
+          final String? content = match!.group(1);
+          if (content != null) {
+            return TencentUnionidResp.fromJson(
+                json.decode(content) as Map<String, dynamic>);
+          }
         }
       }
       throw HttpException(
@@ -184,18 +184,17 @@ class Tencent {
 
   /// 分享 - 说说
   Future<void> shareMood({
-    @required int scene,
-    String summary,
-    List<Uri> imageUris,
-    Uri videoUri,
+    required int scene,
+    String? summary,
+    List<Uri>? imageUris,
+    Uri? videoUri,
   }) {
     assert(scene == TencentScene.SCENE_QZONE);
     assert((summary?.isNotEmpty ?? false) ||
-        (imageUris?.isNotEmpty ?? false) ||
-        (videoUri != null && videoUri.isScheme(_SCHEME_FILE)) ||
         ((imageUris?.isNotEmpty ?? false) &&
-            imageUris.every((Uri element) =>
-                element != null && element.isScheme(_SCHEME_FILE))));
+            imageUris!
+                .every((Uri element) => element.isScheme(_SCHEME_FILE))) ||
+        (videoUri != null && videoUri.isScheme(_SCHEME_FILE)));
     return _channel.invokeMethod<void>(
       _METHOD_SHAREMOOD,
       <String, dynamic>{
@@ -203,7 +202,7 @@ class Tencent {
         if (summary?.isNotEmpty ?? false) _ARGUMENT_KEY_SUMMARY: summary,
         if (imageUris?.isNotEmpty ?? false)
           _ARGUMENT_KEY_IMAGEURIS:
-              imageUris.map((Uri imageUri) => imageUri.toString()).toList(),
+              imageUris!.map((Uri imageUri) => imageUri.toString()).toList(),
         if (videoUri != null) _ARGUMENT_KEY_VIDEOURI: videoUri.toString(),
       },
     );
@@ -211,11 +210,10 @@ class Tencent {
 
   /// 分享 - 文本（Android调用的是系统API，故而不会有回调）
   Future<void> shareText({
-    @required int scene,
-    @required String summary,
+    required int scene,
+    required String summary,
   }) {
     assert(scene == TencentScene.SCENE_QQ);
-    assert(summary?.isNotEmpty ?? false);
     return _channel.invokeMethod<void>(
       _METHOD_SHARETEXT,
       <String, dynamic>{
@@ -227,13 +225,13 @@ class Tencent {
 
   /// 分享 - 图片
   Future<void> shareImage({
-    @required int scene,
-    @required Uri imageUri,
-    String appName,
+    required int scene,
+    required Uri imageUri,
+    String? appName,
     int extInt = TencentQZoneFlag.DEFAULT,
   }) {
     assert(scene == TencentScene.SCENE_QQ);
-    assert(imageUri != null && imageUri.isScheme(_SCHEME_FILE));
+    assert(imageUri.isScheme(_SCHEME_FILE));
     return _channel.invokeMethod<void>(
       _METHOD_SHAREIMAGE,
       <String, dynamic>{
@@ -247,19 +245,16 @@ class Tencent {
 
   /// 分享 - 音乐
   Future<void> shareMusic({
-    @required int scene,
-    @required String title,
-    String summary,
-    Uri imageUri,
-    @required String musicUrl,
-    @required String targetUrl,
-    String appName,
+    required int scene,
+    required String title,
+    String? summary,
+    Uri? imageUri,
+    required String musicUrl,
+    required String targetUrl,
+    String? appName,
     int extInt = TencentQZoneFlag.DEFAULT,
   }) {
     assert(scene == TencentScene.SCENE_QQ);
-    assert(title?.isNotEmpty ?? false);
-    assert(musicUrl?.isNotEmpty ?? false);
-    assert(targetUrl?.isNotEmpty ?? false);
     return _channel.invokeMethod<void>(
       _METHOD_SHAREMUSIC,
       <String, dynamic>{
@@ -277,16 +272,14 @@ class Tencent {
 
   /// 分享 - 网页
   Future<void> shareWebpage({
-    @required int scene,
-    @required String title,
-    String summary,
-    Uri imageUri,
-    @required String targetUrl,
-    String appName,
+    required int scene,
+    required String title,
+    String? summary,
+    Uri? imageUri,
+    required String targetUrl,
+    String? appName,
     int extInt = TencentQZoneFlag.DEFAULT,
   }) {
-    assert(title?.isNotEmpty ?? false);
-    assert(targetUrl?.isNotEmpty ?? false);
     return _channel.invokeMethod<void>(
       _METHOD_SHAREWEBPAGE,
       <String, dynamic>{
diff --git a/lib/src/tencent_constant.dart b/lib/src/tencent_constant.dart
index eff4aed..622309c 100644
--- a/lib/src/tencent_constant.dart
+++ b/lib/src/tencent_constant.dart
@@ -1,5 +1,5 @@
 class TencentScope {
-  TencentScope._();
+  const TencentScope._();
 
   /// 发表一条说说到QQ空间(需要申请权限)
   static const String OPEN_PERMISSION_ADD_TOPIC = 'add_topic';
@@ -45,7 +45,7 @@ class TencentScope {
 }
 
 class TencentScene {
-  TencentScene._();
+  const TencentScene._();
 
   /// QQ
   static const int SCENE_QQ = 0;
@@ -55,7 +55,7 @@ class TencentScene {
 }
 
 class TencentQZoneFlag {
-  TencentQZoneFlag._();
+  const TencentQZoneFlag._();
 
   /// 默认是不隐藏分享到QZone按钮且不自动打开分享到QZone的对话框
   static const int DEFAULT = 0;
diff --git a/lib/tencent_kit.dart b/lib/tencent_kit.dart
index 03088bc..1e150fa 100644
--- a/lib/tencent_kit.dart
+++ b/lib/tencent_kit.dart
@@ -4,7 +4,6 @@ export 'src/model/api/tencent_api_resp.dart';
 export 'src/model/api/tencent_user_info_resp.dart';
 export 'src/model/sdk/tencent_login_resp.dart';
 export 'src/model/sdk/tencent_sdk_resp.dart';
-export 'src/model/sdk/tencent_share_resp.dart';
 export 'src/model/unionid/tencent_unionid_resp.dart';
 export 'src/tencent.dart';
 export 'src/tencent_constant.dart';
diff --git a/pubspec.lock b/pubspec.lock
index 11664c1..efd7c08 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -7,189 +7,182 @@ packages:
       name: _fe_analyzer_shared
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "14.0.0"
+    version: "18.0.0"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.41.2"
+    version: "1.2.0"
   args:
     dependency: transitive
     description:
       name: args
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.6.0"
+    version: "2.0.0"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.5.0-nullsafety.1"
+    version: "2.5.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   build:
     dependency: transitive
     description:
       name: build
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.6.1"
+    version: "2.0.0"
   build_config:
     dependency: transitive
     description:
       name: build_config
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.4.5"
+    version: "0.4.7"
   build_daemon:
     dependency: transitive
     description:
       name: build_daemon
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.6"
+    version: "2.1.10"
   build_resolvers:
     dependency: transitive
     description:
       name: build_resolvers
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.5.2"
+    version: "2.0.0"
   build_runner:
     dependency: "direct dev"
     description:
       name: build_runner
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.11.0"
+    version: "1.12.2"
   build_runner_core:
     dependency: transitive
     description:
       name: build_runner_core
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "6.1.6"
+    version: "6.1.12"
   built_collection:
     dependency: transitive
     description:
       name: built_collection
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "4.3.2"
+    version: "5.0.0"
   built_value:
     dependency: transitive
     description:
       name: built_value
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "7.1.0"
+    version: "8.0.3"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   checked_yaml:
     dependency: transitive
     description:
       name: checked_yaml
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.0.4"
+    version: "2.0.1"
   cli_util:
     dependency: transitive
     description:
       name: cli_util
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.0"
+    version: "0.3.0"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   code_builder:
     dependency: transitive
     description:
       name: code_builder
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.6.0"
+    version: "3.7.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.15.0-nullsafety.3"
+    version: "1.15.0"
   convert:
     dependency: transitive
     description:
       name: convert
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.1"
+    version: "3.0.0"
   crypto:
     dependency: transitive
     description:
       name: crypto
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.5"
+    version: "3.0.0"
   dart_style:
     dependency: transitive
     description:
       name: dart_style
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.11"
+    version: "1.3.14"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0-nullsafety.1"
-  ffi:
-    dependency: transitive
-    description:
-      name: ffi
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.1.3"
+    version: "1.2.0"
   file:
     dependency: transitive
     description:
       name: file
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "5.2.1"
+    version: "6.1.0"
   fixnum:
     dependency: transitive
     description:
       name: fixnum
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.10.11"
+    version: "1.0.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -206,231 +199,140 @@ packages:
       name: glob
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
+    version: "2.0.0"
   graphs:
     dependency: transitive
     description:
       name: graphs
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.0"
+    version: "1.0.0"
   http_multi_server:
     dependency: transitive
     description:
       name: http_multi_server
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.2.0"
+    version: "3.0.0"
   http_parser:
     dependency: transitive
     description:
       name: http_parser
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.4"
-  intl:
-    dependency: transitive
-    description:
-      name: intl
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.16.1"
+    version: "4.0.0"
   io:
     dependency: transitive
     description:
       name: io
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.3.4"
+    version: "1.0.0"
   js:
     dependency: transitive
     description:
       name: js
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.6.2"
+    version: "0.6.3"
   json_annotation:
     dependency: "direct main"
     description:
       name: json_annotation
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.1"
+    version: "4.0.0"
   json_serializable:
     dependency: "direct dev"
     description:
       name: json_serializable
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.5.1"
+    version: "4.0.3"
   logging:
     dependency: transitive
     description:
       name: logging
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.11.4"
+    version: "1.0.0"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.10-nullsafety.1"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
   mime:
     dependency: transitive
     description:
       name: mime
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.9.7"
-  node_interop:
-    dependency: transitive
-    description:
-      name: node_interop
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.1"
-  node_io:
-    dependency: transitive
-    description:
-      name: node_io
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.2.0"
-  okhttp_kit:
-    dependency: "direct dev"
-    description:
-      name: okhttp_kit
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.0.2"
+    version: "1.0.0"
   package_config:
     dependency: transitive
     description:
       name: package_config
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.9.3"
+    version: "2.0.0"
   path:
-    dependency: "direct dev"
+    dependency: transitive
     description:
       name: path
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.8.0-nullsafety.1"
-  path_provider:
-    dependency: "direct dev"
-    description:
-      name: path_provider
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.6.27"
-  path_provider_linux:
-    dependency: transitive
-    description:
-      name: path_provider_linux
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.0.1+2"
-  path_provider_macos:
-    dependency: transitive
-    description:
-      name: path_provider_macos
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.0.4+8"
-  path_provider_platform_interface:
-    dependency: transitive
-    description:
-      name: path_provider_platform_interface
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.0.4"
-  path_provider_windows:
-    dependency: transitive
-    description:
-      name: path_provider_windows
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.0.4+3"
+    version: "1.8.0"
   pedantic:
     dependency: "direct dev"
     description:
       name: pedantic
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.9.2"
-  platform:
-    dependency: transitive
-    description:
-      name: platform
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.2.1"
-  plugin_platform_interface:
-    dependency: transitive
-    description:
-      name: plugin_platform_interface
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.0.3"
+    version: "1.11.0"
   pool:
     dependency: transitive
     description:
       name: pool
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.4.0"
-  process:
-    dependency: transitive
-    description:
-      name: process
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "3.0.13"
+    version: "1.5.0"
   pub_semver:
     dependency: transitive
     description:
       name: pub_semver
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.4.4"
+    version: "2.0.0"
   pubspec_parse:
     dependency: transitive
     description:
       name: pubspec_parse
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.1.7"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.1.5"
+    version: "1.0.0"
   shelf:
     dependency: transitive
     description:
       name: shelf
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.7.9"
+    version: "1.1.0"
   shelf_web_socket:
     dependency: transitive
     description:
       name: shelf_web_socket
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.4"
+    version: "1.0.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -442,112 +344,98 @@ packages:
       name: source_gen
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.9.10+1"
+    version: "0.9.10+4"
   source_span:
     dependency: transitive
     description:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.8.0-nullsafety.2"
+    version: "1.8.0"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.10.0-nullsafety.1"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   stream_transform:
     dependency: transitive
     description:
       name: stream_transform
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
+    version: "2.0.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.2.19-nullsafety.2"
+    version: "0.2.19"
   timing:
     dependency: transitive
     description:
       name: timing
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.1.1+3"
+    version: "1.0.0"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0"
   watcher:
     dependency: transitive
     description:
       name: watcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.9.7+15"
+    version: "1.0.0"
   web_socket_channel:
     dependency: transitive
     description:
       name: web_socket_channel
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
-  win32:
-    dependency: transitive
-    description:
-      name: win32
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.7.4+1"
-  xdg_directories:
-    dependency: transitive
-    description:
-      name: xdg_directories
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.1.2"
+    version: "2.0.0"
   yaml:
     dependency: transitive
     description:
       name: yaml
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.2.1"
+    version: "3.1.0"
 sdks:
-  dart: ">=2.10.0 <2.11.0"
-  flutter: ">=1.12.13+hotfix.5 <2.0.0"
+  dart: ">=2.12.0 <3.0.0"
+  flutter: ">=1.20.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 0ec118b..5ff3f6f 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,28 +1,23 @@
 name: tencent_kit
 description: A powerful Flutter plugin allowing developers to auth/share with natvie Android & iOS Tencent SDKs.
-version: 2.0.1
+version: 2.1.0
 # author: v7lin <v7lin@qq.com>
 homepage: https://github.com/v7lin/fake_tencent
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
-  flutter: ">=1.10.0"
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=1.20.0"
 
 dependencies:
   flutter:
     sdk: flutter
 
-  json_annotation: '>=2.0.0 <4.0.0'
+  json_annotation: ^4.0.0
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
 
-  path: ^1.6.4
-  path_provider: ^1.4.0
-
-  okhttp_kit: ^1.0.0
-
   pedantic:
 
   build_runner:
diff --git a/test/tencent_kit_test.dart b/test/tencent_kit_test.dart
index b9387ce..3f85764 100644
--- a/test/tencent_kit_test.dart
+++ b/test/tencent_kit_test.dart
@@ -10,7 +10,6 @@ void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
   const MethodChannel channel = MethodChannel('v7lin.github.io/tencent_kit');
-  final Tencent tencent = Tencent();
 
   setUp(() {
     channel.setMockMethodCallHandler((MethodCall call) async {
@@ -26,7 +25,7 @@ void main() {
             channel.name,
             channel.codec.encodeMethodCall(
                 MethodCall('onLoginResp', json.decode('{"ret":-2}'))),
-            (ByteData data) {
+            (ByteData? data) {
               // mock success
             },
           ));
@@ -42,7 +41,7 @@ void main() {
             channel.name,
             channel.codec.encodeMethodCall(
                 MethodCall('onShareResp', json.decode('{"ret":0}'))),
-            (ByteData data) {
+            (ByteData? data) {
               // mock success
             },
           ));
@@ -57,30 +56,30 @@ void main() {
   });
 
   test('isQQInstalled', () async {
-    expect(await tencent.isQQInstalled(), true);
+    expect(await Tencent.instance.isQQInstalled(), true);
   });
 
   test('isTIMInstalled', () async {
-    expect(await tencent.isTIMInstalled(), true);
+    expect(await Tencent.instance.isTIMInstalled(), true);
   });
 
   test('login', () async {
-    StreamSubscription<TencentLoginResp> sub =
-        tencent.loginResp().listen((TencentLoginResp resp) {
+    final StreamSubscription<TencentLoginResp> sub =
+        Tencent.instance.loginResp().listen((TencentLoginResp resp) {
       expect(resp.ret, TencentSdkResp.RET_USERCANCEL);
     });
-    await tencent.login(
+    await Tencent.instance.login(
       scope: <String>[TencentScope.GET_SIMPLE_USERINFO],
     );
     await sub.cancel();
   });
 
   test('share', () async {
-    StreamSubscription<TencentShareResp> sub =
-        tencent.shareResp().listen((TencentShareResp resp) {
+    final StreamSubscription<TencentSdkResp> sub =
+        Tencent.instance.shareResp().listen((TencentSdkResp resp) {
       expect(resp.ret, TencentSdkResp.RET_SUCCESS);
     });
-    await tencent.shareMood(
+    await Tencent.instance.shareMood(
       scene: TencentScene.SCENE_QZONE,
       summary: 'share text',
     );