Question

我有一项定义如下的服务

public class ForegroundService extends Service {
private static final String LOG_TAG = "ForegroundService";

@Override
public void onCreate() {
    super.onCreate();
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    if(intent != null) {
        if (intent.getAction().equals(Constants.ACTION.STARTFOREGROUND_ACTION)) {
            Log.i(LOG_TAG, "Received Start Foreground Intent ");
            Intent notificationIntent = new Intent(this, DashboardActivity.class);
            notificationIntent.setAction(Constants.ACTION.MAIN_ACTION);
            notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

            PendingIntent pendingIntent = PendingIntent.getActivity(getApplication(),
                    0,
                    notificationIntent,
                    PendingIntent.FLAG_NO_CREATE);

            Intent previousIntent = new Intent(this, ForegroundService.class);
            previousIntent.setAction(Constants.ACTION.PREV_ACTION);
            PendingIntent ppreviousIntent = PendingIntent.getService(this, 0,
                    previousIntent, 0);

            Intent playIntent = new Intent(this, ForegroundService.class);
            playIntent.setAction(Constants.ACTION.PLAY_ACTION);
            PendingIntent pplayIntent = PendingIntent.getService(this, 0,
                    playIntent, 0);

            Intent nextIntent = new Intent(this, ForegroundService.class);
            nextIntent.setAction(Constants.ACTION.NEXT_ACTION);
            PendingIntent pnextIntent = PendingIntent.getService(this, 0,
                    nextIntent, 0);

            Bitmap icon = BitmapFactory.decodeResource(getResources(),
                    R.drawable.art_background);

            Notification notification = new NotificationCompat.Builder(this)
                    .setContentTitle("Truiton Music Player")
                    .setTicker("Truiton Music Player")
                    .setContentText("My Music")
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setLargeIcon(
                            Bitmap.createScaledBitmap(icon, 128, 128, false))
                    .setContentIntent(pendingIntent)
                    .setOngoing(true)
                    .addAction(android.R.drawable.ic_media_previous,
                            "Previous", ppreviousIntent)
                    .addAction(android.R.drawable.ic_media_play, "Play",
                            pplayIntent)
                    .addAction(android.R.drawable.ic_media_next, "Next",
                            pnextIntent).build();
            startForeground(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE,
                    notification);
        } else if (intent.getAction().equals(Constants.ACTION.PREV_ACTION)) {
            Log.i(LOG_TAG, "Clicked Previous");
        } else if (intent.getAction().equals(Constants.ACTION.PLAY_ACTION)) {
            Log.i(LOG_TAG, "Clicked Play");
        } else if (intent.getAction().equals(Constants.ACTION.NEXT_ACTION)) {
            Log.i(LOG_TAG, "Clicked Next");
        } else if (intent.getAction().equals(
                Constants.ACTION.STOPFOREGROUND_ACTION)) {
            Log.i(LOG_TAG, "Received Stop Foreground Intent");
            stopForeground(true);
            stopSelf();
        }
    }
    return START_STICKY;
}

@Override
public void onDestroy() {
    super.onDestroy();
    Log.i(LOG_TAG, "In onDestroy");
}

@Override
public IBinder onBind(Intent intent) {
    // Used only in case of bound services.
    return null;
}
}

我在清单

中定义了以下内容

android:launchMode="singleTask"

并且

这就是我启动服务的方式

private void showNotificationService() {
    Intent startIntent = new Intent(DashboardActivity.this, ForegroundService.class);
    startIntent.setAction(Constants.ACTION.STARTFOREGROUND_ACTION);
    startService(startIntent);
}

因此，当我点击通知时，应用程序会转到onCreate，但我希望应用程序恢复到通知出现之前的状态。关于我做错了什么的任何线索？

此外，我使用此博客中提供的代码作为前台服务

http://www.truiton.com/2014/10/android-foreground-service-example/

Answer 1

将类别添加到notificationIntent

参考下面的代码

notificationIntent.addCategory("android.intent.category.LAUNCHER");

Answer 2

我对您的代码进行了一些修改。问题是你在创建新的Intent时。

public class ForegroundService extends Service {
    private static final String LOG_TAG = "ForegroundService";

    @Override
    public void onCreate() {
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if(intent != null) {
            if (intent.getAction().equals(Constants.ACTION.STARTFOREGROUND_ACTION)) {
                Log.i(LOG_TAG, "Received Start Foreground Intent ");
                Intent notificationIntent = new Intent(this, DashboardActivity.class);
                notificationIntent.setAction(Constants.ACTION.MAIN_ACTION);
                notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);


                PendingIntent pendingIntent = PendingIntent.getActivity(getApplication(),
                        0,
                        notificationIntent,
                        PendingIntent.FLAG_UPDATE_CURRENT);

                Intent previousIntent = new Intent(this, ForegroundService.class);
                previousIntent.setAction(Constants.ACTION.PREV_ACTION);
                PendingIntent ppreviousIntent = PendingIntent.getService(this, 0,
                        previousIntent, 0);

                Intent playIntent = new Intent(this, ForegroundService.class);
                playIntent.setAction(Constants.ACTION.PLAY_ACTION);
                PendingIntent pplayIntent = PendingIntent.getService(this, 0,
                        playIntent, 0);

                Intent nextIntent = new Intent(this, ForegroundService.class);
                nextIntent.setAction(Constants.ACTION.NEXT_ACTION);
                PendingIntent pnextIntent = PendingIntent.getService(this, 0,
                        nextIntent, 0);

                Bitmap icon = BitmapFactory.decodeResource(getResources(),
                        R.drawable.art_background);

                Notification notification = new NotificationCompat.Builder(this)
                        .setContentTitle("Truiton Music Player")
                        .setTicker("Truiton Music Player")
                        .setContentText("My Music")
                        .setSmallIcon(R.drawable.ic_launcher)
                        .setLargeIcon(
                                Bitmap.createScaledBitmap(icon, 128, 128, false))
                        .setContentIntent(pendingIntent)
                        .setOngoing(true)
                        .addAction(android.R.drawable.ic_media_previous,
                                "Previous", ppreviousIntent)
                        .addAction(android.R.drawable.ic_media_play, "Play",
                                pplayIntent)
                        .addAction(android.R.drawable.ic_media_next, "Next",
                                pnextIntent).build();
                startForeground(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE,
                        notification);
            } else if (intent.getAction().equals(Constants.ACTION.PREV_ACTION)) {
                Log.i(LOG_TAG, "Clicked Previous");
            } else if (intent.getAction().equals(Constants.ACTION.PLAY_ACTION)) {
                Log.i(LOG_TAG, "Clicked Play");
            } else if (intent.getAction().equals(Constants.ACTION.NEXT_ACTION)) {
                Log.i(LOG_TAG, "Clicked Next");
            } else if (intent.getAction().equals(
                    Constants.ACTION.STOPFOREGROUND_ACTION)) {
                Log.i(LOG_TAG, "Received Stop Foreground Intent");
                stopForeground(true);
                stopSelf();
            }
        }
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(LOG_TAG, "In onDestroy");
    }

    @Override
    public IBinder onBind(Intent intent) {
        // Used only in case of bound services.
        return null;
    }
    }

我在清单

中定义了以下内容

android:launchMode="singleInstance"

我可以为你工作。我做到了，我工作了！如果您需要别的或更多帮助，我可以使用。祝你有愉快的一天！

Android - 活动在通知单击时重新启动（通知已打开前台服务）

2 个答案: