如果应用程序被杀死，小部件将无法工作 Android 11

Question

我有一个应用程序在点击 widget 时启动 service。这是 class 对应 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, 0, 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。有人知道我该如何解决这个问题吗？

Answer 1

我找到了解决此问题的方法，方法是从 OnUpdate 函数调用 BroadcastReceiver，然后从 BroadcastReceiver 启动 Service：

 Intent intent = new Intent();
        intent.setAction(START_SERVICE);
        intent.setClassName(StartServiceReceiver.class.getPackage().getName(), StartServiceReceiver.class.getName());
        PendingIntent pending = PendingIntent.getBroadcast(context, 0, 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"/>

如果应用程序被杀死，小部件将无法工作 Android 11

Widget does not work if app is killed Android 11

java

android

widget

broadcastreceiver