Android Widget不会启动服务

Question

我需要制作一个小部件，一旦点击，就会启动服务。服务会执行某个动作，更改小部件图片，播放声音等，然后停止。

的AppWidgetProvider：

public class WidgetActivity extends AppWidgetProvider {


 @Override
 public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {

        RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
        Intent intent = new Intent(context.getApplicationContext(), SilentService.class);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
        PendingIntent pendingIntent = PendingIntent.getService(
                context.getApplicationContext(), 0, intent,
                PendingIntent.FLAG_UPDATE_CURRENT);
        remoteViews.setOnClickPendingIntent(R.id.LinLayWiget, pendingIntent);
        appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);

        context.startService(intent);

 }


}

服务：

public class SilentService extends Service {
    @Override
    public IBinder onBind(Intent intent) {
    return null;
    }
    @Override
    public void onCreate() {

        Toast.makeText(this, "I'm Alive!", 1500).show();
        MediaPlayer mpl = MediaPlayer.create(this, R.raw.enter );
        mpl.start();

    }



    @Override
    public void onDestroy() {
    //code to execute when the service is shutting down
    }
    @Override
    public void onStart(Intent intent, int startid) {
    //code to execute when the service is starting up
    }



    }

清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="FX.Widget"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">

        <receiver android:name="widget.cam.com.WidgetActivity" android:label="FXMaster" android:icon="@drawable/assiconwi">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
                <action android:name="android.appwidget.action.APPWIDGET_ENABLED"/> 
            </intent-filter>
            <meta-data 
                android:name="android.appwidget.provider"
                android:resource="@xml/widgetprovider" />
        </receiver>


        <service
        android:enabled="true"
        android:name=".SilentService">
        </service>


    </application>
</manifest>

但是一旦我点击小部件，没有任何反应......任何想法为什么？

谢谢！