[image_picker] Fix an issue that the example app won't launch the image picker after Android V2 embedding migration. (#2469)

diff --git a/packages/image_picker/CHANGELOG.md b/packages/image_picker/CHANGELOG.md
index bd0c289..3fbdd8c 100644
--- a/packages/image_picker/CHANGELOG.md
+++ b/packages/image_picker/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.3+1
+
+* Fix an issue that the example app won't launch the image picker after Android V2 embedding migration.
+
 ## 0.6.3
 
 * Support Android V2 embedding.
diff --git a/packages/image_picker/example/android/app/src/main/AndroidManifest.xml b/packages/image_picker/example/android/app/src/main/AndroidManifest.xml
index 5de9f04..597abd9 100755
--- a/packages/image_picker/example/android/app/src/main/AndroidManifest.xml
+++ b/packages/image_picker/example/android/app/src/main/AndroidManifest.xml
@@ -3,7 +3,7 @@
 
     <uses-permission android:name="android.permission.INTERNET"/>
 
-    <application android:name="io.flutter.app.FlutterApplication" android:label="Image Picker Example" android:icon="@mipmap/ic_launcher">
+    <application android:label="Image Picker Example" android:icon="@mipmap/ic_launcher">
         <activity android:name="io.flutter.embedding.android.FlutterActivity"
                   android:theme="@android:style/Theme.Black.NoTitleBar"
                   android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
@@ -14,12 +14,13 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
-            <activity
+        <activity
             android:name=".EmbeddingV1Activity"
                   android:theme="@android:style/Theme.Black.NoTitleBar"
                   android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
                   android:hardwareAccelerated="true"
                   android:windowSoftInputMode="adjustResize">
         </activity>
+        <meta-data android:name="flutterEmbedding" android:value="2"/>
     </application>
 </manifest>
diff --git a/packages/image_picker/example/android/app/src/main/java/io/flutter/plugins/imagepickerexample/EmbeddingV1Activity.java b/packages/image_picker/example/android/app/src/main/java/io/flutter/plugins/imagepickerexample/EmbeddingV1Activity.java
index 79c1ca6..ddda89c 100644
--- a/packages/image_picker/example/android/app/src/main/java/io/flutter/plugins/imagepickerexample/EmbeddingV1Activity.java
+++ b/packages/image_picker/example/android/app/src/main/java/io/flutter/plugins/imagepickerexample/EmbeddingV1Activity.java
@@ -6,12 +6,16 @@
 
 import android.os.Bundle;
 import io.flutter.app.FlutterActivity;
-import io.flutter.plugins.GeneratedPluginRegistrant;
+import io.flutter.plugins.imagepicker.ImagePickerPlugin;
+import io.flutter.plugins.videoplayer.VideoPlayerPlugin;
 
 public class EmbeddingV1Activity extends FlutterActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    GeneratedPluginRegistrant.registerWith(this);
+    ImagePickerPlugin.registerWith(
+        registrarFor("io.flutter.plugins.imagepicker.ImagePickerPlugin"));
+    VideoPlayerPlugin.registerWith(
+        registrarFor("io.flutter.plugins.videoplayer.VideoPlayerPlugin"));
   }
 }
diff --git a/packages/image_picker/pubspec.yaml b/packages/image_picker/pubspec.yaml
index 5b88c71..f2600c2 100755
--- a/packages/image_picker/pubspec.yaml
+++ b/packages/image_picker/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Flutter plugin for selecting images from the Android and iOS image
   library, and taking new pictures with the camera.
 homepage: https://github.com/flutter/plugins/tree/master/packages/image_picker
-version: 0.6.3
+version: 0.6.3+1
 
 flutter:
   plugin: