changes in flutter release

.gitignore

@@ -7,3 +7,6 @@
 build/
 
 .flutter-plugins
+
+.properties
+key.properties

android/app/build.gradle

@@ -24,6 +24,10 @@ if (flutterVersionName == null) {
 apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
+def keystorePropertiesFile = rootProject.file("key.properties")
+def keystoreProperties = new Properties()
+keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+
 android {
     compileSdkVersion 27
 
@@ -40,12 +44,24 @@ android {
         versionName flutterVersionName
         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.
             // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
+            signingConfig signingConfigs.release
+            minifyEnabled true
+            useProguard true
+
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
 }

android/app/proguard-rules.pro

@@ -0,0 +1,7 @@
+#Flutter Wrapper
+-keep class io.flutter.app.** { *; }
+-keep class io.flutter.plugin.**  { *; }
+-keep class io.flutter.util.**  { *; }
+-keep class io.flutter.view.**  { *; }
+-keep class io.flutter.**  { *; }
+-keep class io.flutter.plugins.**  { *; }

android/app/src/main/AndroidManifest.xml

@@ -14,7 +14,7 @@
          FlutterApplication and put your custom class here. -->
     <application
         android:name="io.flutter.app.FlutterApplication"
-        android:label="flutter_uikit"
+        android:label="Flutter UIKit"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"