release apk

android/app/build.gradle

@@ -25,6 +25,13 @@ apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
+def keystoreProperties = new Properties()
+def keystorePropertiesFile = rootProject.file('key.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
+
+
 android {
     compileSdkVersion 27
 
@@ -46,13 +53,20 @@ android {
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        release {
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+            storeFile file(keystoreProperties['storeFile'])
+            storePassword keystoreProperties['storePassword']
+        }
+    }
     buildTypes {
         release {
-            // TODO: Add your own signing config for the release build.
+            signingConfig signingConfigs.release
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
         }
     }
+
 }
 
 flutter {

android/app/release/output.json

@@ -0,0 +1 @@
+[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":1,"versionName":"0.0.5","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]

android/key.properties

@@ -0,0 +1,4 @@
+storePassword=fluttergo123
+keyPassword=fluttergo123
+keyAlias=key
+storeFile=/Users/xj.deng/key.jks

lib/widgets/components/Bar/FlexibleSpaceBar/demo.dart

@@ -30,8 +30,7 @@ class FlexibleSpaceBarLessDefault extends StatelessWidget {
   final widget;
   final parent;
 
-  const FlexibleSpaceBarLessDefault([this.widget, this.parent])
+  const FlexibleSpaceBarLessDefault([this.widget, this.parent]) : super();
-      : super();
 
   @override
   Widget build(BuildContext context) {
@@ -39,7 +38,8 @@ class FlexibleSpaceBarLessDefault extends StatelessWidget {
         height: 300.0,
         child: Scaffold(
           body: NestedScrollView(
-            headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
+            headerSliverBuilder:
+                (BuildContext context, bool innerBoxIsScrolled) {
               return <Widget>[
                 SliverAppBar(
                   expandedHeight: 150.0,
@@ -55,6 +55,13 @@ class FlexibleSpaceBarLessDefault extends StatelessWidget {
                       background: Image.network(
                         "https://images.pexels.com/photos/396547/pexels-photo-396547.jpeg?auto=compress&cs=tinysrgb&h=350",
                         fit: BoxFit.cover,
+
+                        /// 色彩叠加  UI可以理解为两个色彩涂层，在图片混合一个色层
+                        // color: Colors.redAccent,  //混合的颜色
+                        // colorBlendMode: BlendMode.darken,  //混合方式
+
+                        ///图片重复填充容器
+                        // repeat: ImageRepeat.repeat,
                       )),
                 ),
               ];
@@ -63,6 +70,6 @@ class FlexibleSpaceBarLessDefault extends StatelessWidget {
               child: Text("向上提拉 ⬆ 查看效果..."),
             ),
           ),
-        )
+        ));
-    );
+  }
-}}
+}

lib/widgets/elements/Frame/Box/DecoratedBox/demo.dart

@@ -20,7 +20,10 @@ class DecoratedBoxCreate extends StatelessWidget {
         color: const Color(0xff7c94b6),
         //设置图片内容
         image: DecorationImage(
-            fit: BoxFit.cover,
+
+            ///fix:BoxFit.contain: 保持图片的比例，最大程度填充容器  BoxFit.fill:容器被图片完全填充，不在意图片比例，只填充整个容器
+            ///fix:BoxFit.fitWidth：图片以宽被完全填充  BoxFit.fix:fixHigth:图片以高度完全填充
+            fit: BoxFit.cover, //图片填充整个容器，按比例放大，多余部分被裁切
             image: ExactAssetImage('assets/images/food01.jpeg')),
         //外宽边框，可以不设置
         border: Border.all(
@@ -77,3 +80,27 @@ class DecoratedBoxCreateShape extends StatelessWidget {
     );
   }
 }
+
+class DecoratedBoxCreateShapes extends StatelessWidget {
+  DecoratedBoxCreateShapes({
+    Key key,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return DecoratedBox(
+      position: DecorationPosition.background,
+      decoration: BoxDecoration(
+        gradient: const LinearGradient(
+            //渐变效果  线性渐变
+            colors: [Colors.red, Colors.yellowAccent, Colors.lightGreenAccent]),
+//         color: const Color(0xff7c94b6),
+        border: Border.all(
+          color: Colors.blue.shade50,
+          width: 5.0,
+        ),
+        shape: BoxShape.circle,
+      ),
+    );
+  }
+}

lib/widgets/elements/Frame/Box/DecoratedBox/index.dart

@@ -68,6 +68,14 @@ class _DemoState extends State<Demo> {
           height: 100.0,
           width: 100.0,
           child: DecoratedBoxCreateShape(),
+        ),
+        SizedBox(
+          height: 10.0,
+        ),
+        Container(
+          height: 100.0,
+          width: 100.0,
+          child: DecoratedBoxCreateShapes(),
         )
       ],
     );

pubspec.lock

@@ -14,7 +14,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -35,7 +35,7 @@ packages:
       name: city_pickers
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.14"
+    version: "0.1.16"
   collection:
     dependency: transitive
     description:
@@ -101,7 +101,7 @@ packages:
       name: flutter_webview_plugin
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.3"
+    version: "0.3.4"
   image_picker:
     dependency: "direct main"
     description:
@@ -129,14 +129,14 @@ packages:
       name: markdown
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.2"
+    version: "2.0.3"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.3+1"
+    version: "0.12.5"
   meta:
     dependency: transitive
     description:
@@ -164,7 +164,7 @@ packages:
       name: quiver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.2"
   shared_preferences:
     dependency: "direct main"
     description:
@@ -183,7 +183,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.4"
+    version: "1.5.5"
   sqflite:
     dependency: "direct main"
     description:
@@ -204,7 +204,7 @@ packages:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.8"
+    version: "2.0.0"
   string_scanner:
     dependency: transitive
     description:
@@ -232,7 +232,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2"
+    version: "0.2.4"
   typed_data:
     dependency: transitive
     description:
@@ -255,5 +255,5 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.1.1-dev.0.0 <3.0.0"
+  dart: ">=2.2.0 <3.0.0"
   flutter: ">=0.5.6 <2.0.0"