标签:android blog io ar java 文件 数据 on 2014
清除数据时会发送ACTION_PACKAGE_DATA_CLEARED广播,在widgetProvider里面监听该广播并进行处理就可以了
public static class PackageDataClearedReceiver extends BroadcastReceiver { private static final String ACTION_PACKAGE_DATA_CLEARED = "com.mediatek.intent.action.SETTINGS_PACKAGE_DATA_CLEARED"; public void onReceive(Context context, Intent intent) { if (!ACTION_PACKAGE_DATA_CLEARED.equals(intent.getAction())) { return; } String pkgName = intent.getStringExtra("packageName"); MusicLogUtils.v(TAG, "PackageDataClearedReceiver recevied pkgName = " + pkgName); if (pkgName != null && pkgName.equals(context.getPackageName())) { MediaAppWidgetProvider mediaAppWidgetProvider = MediaAppWidgetProvider .getInstance(); if (mediaAppWidgetProvider == null) { MusicLogUtils.v(TAG, "mediaAppWidgetProvider is null "); return; } mediaAppWidgetProvider.defaultAppWidget(context, null); } } }
defaultAppWidget()函数会重新加载widget信息和布局文件,这样就可以恢复默认值了。
最后别忘了在AndroidManefest.xml里面加上:
<receiver android:name="com.android.music.MediaAppWidgetProvider$PackageDataClearedReceiver" > <intent-filter> <action android:name="com.mediatek.intent.action.SETTINGS_PACKAGE_DATA_CLEARED" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </receiver>
标签:android blog io ar java 文件 数据 on 2014
原文地址:http://blog.csdn.net/chaihuasong/article/details/41351747