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>
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