问题描述
我有一个应用程序,它在点击 service
时启动 widget
。
这是 class
的 widget
:
public class PlayWidget extends appwidgetprovider {
public void onUpdate(Context context,AppWidgetManager appWidgetManager,int[] appWidgetIds) {
for (int i = 0; i < appWidgetIds.length; i++) {
int currentWidgetId = appWidgetIds[i];
RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.playwidget);
views.setTextViewText(R.id.bLevelText,"My widget");
Intent intent = new Intent(context,PlayService.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,appWidgetIds);
PendingIntent pending = PendingIntent.getService(context,intent,PendingIntent.FLAG_UPDATE_CURRENT);
views.setonClickPendingIntent(R.id.imageButton11,pending);
appWidgetManager.updateAppWidget(currentWidgetId,views);
appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds[i],R.id.imageButton11);
}
}
}
这是 Widget
的清单声明:
<receiver
android:name=".widget.PlayWidget"
android:icon="@drawable/play">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<Meta-data
android:name="android.appwidget.provider"
android:resource="@xml/playwidget_info" />
</receiver>
这是 Service
的清单声明:
<service android:name=".widget.PlayService"/>
问题是在 Android 11
上,当应用程序被终止并且我按下小部件时,Service
将不再启动。任何人都知道我该如何解决这个问题?
解决方法
我找到了解决此问题的方法,方法是从 BroadcastReceiver
函数调用 OnUpdate
,然后从 Service
启动 BroadcastReceiver
:
Intent intent = new Intent();
intent.setAction(START_SERVICE);
intent.setClassName(StartServiceReceiver.class.getPackage().getName(),StartServiceReceiver.class.getName());
PendingIntent pending = PendingIntent.getBroadcast(context,intent,0);
views.setOnClickPendingIntent(R.id.imageButton11,pending);
这是 BroadcastReceiver
的代码:
public class StartServiceReceiver extends BroadcastReceiver {
public static final String START_SERVICE= "start_service";
@Override
public void onReceive(Context context,Intent intent) {
if (intent.getAction().equals(START_SERVICE)) {
context.startService(new Intent(context,PlayService.class));
}
}
}
以及 BroadcastReceiver
的清单声明:
<receiver android:name=".StartServiceReceiver" android:label="@string/app_name"/>