Question

我遇到了一个非常有趣的问题 - 我有一个小部件，当按下时，会触发一个OnClickPendingIntent来调用一个可以播放声音的服务。但是，不时大约一个小时，它本身就会发射。

插件：

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.layout, pendingIntent);

        appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);

        context.startService(intent);
    }


}

服务：

public class SilentService extends Service {
    @Override
    public void onStart(Intent intent, int startId) {

        Log.e("UpdateWidgetService", "Called");

        final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this.getApplicationContext());

        int[] appWidgetIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);

        if (appWidgetIds.length > 0) {
            for (final int widgetId : appWidgetIds) {

                final RemoteViews remoteViews = new RemoteViews(getPackageName(),   R.layout.widget_layout);

                remoteViews.setImageViewResource(R.id.ivc, R.drawable.pic1);
                 appWidgetManager.updateAppWidget(widgetId, remoteViews);

                MediaPlayer mpl = MediaPlayer.create(this, R.raw.music1);

                int intRand = random.nextInt(5)+1;

                Log.e("r",String.valueOf(intRand));

                mpl.start();

                mpl.setOnCompletionListener(new OnCompletionListener() {

                     public void onCompletion(MediaPlayer mp) {
                         remoteViews.setImageViewResource(R.id.ivc, R.drawable.pic2);
                         appWidgetManager.updateAppWidget(widgetId, remoteViews);
                     }
                    });


            }
            stopSelf();
        }
        super.onStart(intent, startId);
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}

谢谢！

Answer 1

我有一种感觉Android正在查杀您的服务，然后您的代码正试图再次启动它。我见过类似的问题。请阅读：http://developer.android.com/guide/topics/fundamentals.html#proclife

当Android尝试恢复内存后，当您的服务重新启动时，它会尝试启动该服务，从而创建一个新的媒体播放器并重新启动它。这是我的假设，但不知道代码是如何设置的，但基于我认为最有可能出现的问题。

Android OnClickPendingIntent（小部件 - ＆gt;服务）单独触发

1 个答案: