diff --git a/.drone.yml b/.drone.yml
index 401aabb..4a8d8bb 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -63,6 +63,17 @@ steps:
     files:
     - ./coverage/lcov.info
 
+volumes:
+- name: pub-cache
+  temp: {}
+- name: gradle
+  temp: {}
+
+---
+kind: pipeline
+name: publish
+
+steps:
 - name: publish-check
   image: v7lin/flutter:1.5.4-hotfix.2-stable
   volumes:
@@ -70,12 +81,87 @@ steps:
     path: /opt/flutter/.pub-cache
   commands:
   - flutter packages pub publish --dry-run
-  when:
-    event:
-    - tag
+
+- name: restore-cache
+  image: alpine:3.9.3
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - wget -P $FLUTTER_HOME https://raw.githubusercontent.com/v7lin/pub_credentials/master/credentials.json.enc
+
+- name: restore-cache-openssl
+  image: v7lin/openssl:1.1.1b
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  environment:
+    ENC_METHOD:
+      from_secret: ENC_METHOD
+    ENC_PASSWORD:
+      from_secret: ENC_PASSWORD
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - openssl enc -d -$ENC_METHOD -k $ENC_PASSWORD -in $FLUTTER_HOME/credentials.json.enc -out $FLUTTER_HOME/credentials.json
+  - rm $FLUTTER_HOME/credentials.json.enc
+
+- name: publish
+  image: v7lin/flutter:1.5.4-hotfix.2-stable
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  commands:
+  - echo "y" | flutter packages pub publish
+
+- name: save-cache-openssl
+  image: v7lin/openssl:1.1.1b
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  environment:
+    ENC_METHOD:
+      from_secret: ENC_METHOD
+    ENC_PASSWORD:
+      from_secret: ENC_PASSWORD
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - openssl enc -e -$ENC_METHOD -k $ENC_PASSWORD -in $FLUTTER_HOME/credentials.json -out $FLUTTER_HOME/credentials.json.enc
+  - rm /opt/flutter/.pub-cache/credentials.json
+
+- name: save-cache
+  image: docker:git
+  volumes:
+  - name: pub-cache
+    path: /opt/flutter/.pub-cache
+  environment:
+    GIT_USER_EMAIL:
+      from_secret: GIT_USER_EMAIL
+    GIT_USER_NAME:
+      from_secret: GIT_USER_NAME
+    GIT_USER_PASSWORD:
+      from_secret: GIT_USER_PASSWORD # 密码含'@'，用'%40'替换 -> URLEncoder.encode("@","utf-8");
+  commands:
+  - FLUTTER_HOME=/opt/flutter/.pub-cache
+  - git config --global user.email $GIT_USER_EMAIL
+  - git config --global user.name $GIT_USER_NAME
+  - git config --global credential.helper store
+  - git clone -b master https://$GIT_USER_NAME:$GIT_USER_PASSWORD@github.com/v7lin/pub_credentials.git $FLUTTER_HOME/pub_credentials
+  - rm $FLUTTER_HOME/pub_credentials/credentials.json.enc
+  - mv $FLUTTER_HOME/credentials.json.enc $FLUTTER_HOME/pub_credentials/credentials.json.enc
+  - cd $FLUTTER_HOME/pub_credentials
+  - git commit -am "update credentials by ci/cd tools"
+  - git push
 
 volumes:
 - name: pub-cache
   temp: {}
-- name: gradle
-  temp: {}
+
+trigger:
+  status:
+  - success
+  event:
+  - tag
+
+depends_on:
+- default
diff --git a/CHANGELOG.md b/CHANGELOG.md
index af1b9ad..fa399a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.3.0 - 2019.5.24
+
+* 优化
+* 自动化发布
+
 ## 0.2.0 - 2019.3.26
 
 * 不再自动设置 AccessToken
diff --git a/README.md b/README.md
index 3e90525..25be10e 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,6 @@ flutter版腾讯(QQ)SDK
 
 ## fake 系列 libraries
 
-* [flutter版okhttp3](https://github.com/v7lin/fake_http)
 * [flutter版微信SDK](https://github.com/v7lin/fake_wechat)
 * [flutter版腾讯(QQ)SDK](https://github.com/v7lin/fake_tencent)
 * [flutter版新浪微博SDK](https://github.com/v7lin/fake_weibo)
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 136ffde..fe4598e 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -39,9 +39,9 @@ class Home extends StatefulWidget {
 }
 
 class _HomeState extends State<Home> {
-  static const String TENCENT_APPID = '222222';
+  static const String _TENCENT_APPID = '222222';
 
-  Tencent _tencent = Tencent();
+  Tencent _tencent = Tencent()..registerApp(appId: _TENCENT_APPID);
 
   StreamSubscription<TencentLoginResp> _login;
   StreamSubscription<TencentUserInfoResp> _userInfo;
@@ -52,7 +52,6 @@ class _HomeState extends State<Home> {
   @override
   void initState() {
     super.initState();
-    _tencent.registerApp(appId: TENCENT_APPID);
     _login = _tencent.loginResp().listen(_listenLogin);
     _userInfo = _tencent.userInfoResp().listen(_listenUserInfo);
     _share = _tencent.shareResp().listen(_listenShare);
diff --git a/lib/src/tencent.dart b/lib/src/tencent.dart
index d214cc4..9e969fd 100644
--- a/lib/src/tencent.dart
+++ b/lib/src/tencent.dart
@@ -85,14 +85,17 @@ class Tencent {
     }
   }
 
+  /// 登录
   Stream<TencentLoginResp> loginResp() {
     return _loginRespStreamController.stream;
   }
 
+  /// 用户信息
   Stream<TencentUserInfoResp> userInfoResp() {
     return _userInfoRespStreamController.stream;
   }
 
+  /// 分享
   Stream<TencentShareResp> shareResp() {
     return _shareRespStreamController.stream;
   }
@@ -105,6 +108,7 @@ class Tencent {
     return (await _channel.invokeMethod(_METHOD_ISQQSUPPORTSSOLOGIN)) as bool;
   }
 
+  /// 登录
   Future<void> login({
     @required List<String> scope,
   }) {
@@ -117,10 +121,12 @@ class Tencent {
     );
   }
 
+  /// 登出
   Future<void> logout() {
     return _channel.invokeMethod(_METHOD_LOGOUT);
   }
 
+  /// 用户信息
   Future<void> getUserInfo({
     @required String openId,
     @required String accessToken,
@@ -141,6 +147,7 @@ class Tencent {
     );
   }
 
+  /// 分享 - 说说
   Future<void> shareMood({
     @required int scene,
     String summary,
@@ -182,6 +189,7 @@ class Tencent {
     return _channel.invokeMethod(_METHOD_SHAREMOOD, map);
   }
 
+  /// 分享 - 图片
   Future<void> shareImage({
     @required int scene,
     @required Uri imageUri,
@@ -204,6 +212,7 @@ class Tencent {
     return _channel.invokeMethod(_METHOD_SHAREIMAGE, map);
   }
 
+  /// 分享 - 音乐
   Future<void> shareMusic({
     @required int scene,
     @required String title,
@@ -242,6 +251,7 @@ class Tencent {
     return _channel.invokeMethod(_METHOD_SHAREMUSIC, map);
   }
 
+  /// 分享 - 网页
   Future<void> shareWebpage({
     @required int scene,
     @required String title,