[Shared_preferences]suppress warnings (flutter#2241)

Author: Chris Yang

packages/shared_preferences/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.5.4+3
+
+* Android: Suppress casting warnings.
+
 ## 0.5.4+2
 
 * Remove AndroidX warnings.

packages/shared_preferences/android/src/main/java/io/flutter/plugins/sharedpreferences/MethodCallHandlerImpl.java

@@ -26,6 +26,7 @@
  * Implementation of the {@link MethodChannel.MethodCallHandler} for the plugin. It is also
  * responsible of managing the {@link android.content.SharedPreferences}.
  */
+@SuppressWarnings("unchecked")
 class MethodCallHandlerImpl implements MethodChannel.MethodCallHandler {
 
   private static final String SHARED_PREFERENCES_NAME = "FlutterSharedPreferences";

packages/shared_preferences/android/src/main/java/io/flutter/plugins/sharedpreferences/SharedPreferencesPlugin.java

@@ -11,7 +11,6 @@
 import io.flutter.plugin.common.PluginRegistry;
 
 /** SharedPreferencesPlugin */
-@SuppressWarnings("unchecked")
 public class SharedPreferencesPlugin implements FlutterPlugin {
   private static final String CHANNEL_NAME = "plugins.flutter.io/shared_preferences";
   private MethodChannel channel;

packages/shared_preferences/pubspec.yaml

@@ -3,7 +3,7 @@ description: Flutter plugin for reading and writing simple key-value pairs.
   Wraps NSUserDefaults on iOS and SharedPreferences on Android.
 author: Flutter Team <flutter-dev@googlegroups.com>
 homepage: https://github.com/flutter/plugins/tree/master/packages/shared_preferences
-version: 0.5.4+2
+version: 0.5.4+3
 
 flutter:
   plugin: