Android后台服务在几分钟后断开连接

Question

即使应用程序不在内存中，我也试图为运行的通知构建background service并显示通知

但是问题是，我使用了一段时间的广播服务后，大约在8分钟后断开了连接，而我却无法接收到通知，就像服务已死。

我在通知部分使用Pusher。我正在订阅并收听广播服务中的事件。

我可以在Pusher调试控制台中看到，一段时间后设备会断开连接。

构建即使应用程序已关闭或未在内存中也保持运行的后台服务的最佳方法是什么？

当然应该是android的跨版本。

我该如何实现？

谢谢！

Answer 1

尝试下面的代码

public class BackgroundUpdateService extends Service {

    /**
     * Author：Hardik Talaviya
     * Date：  2019.08.3 2:30 PM
     * Describe:
     */

    private static final String TAG = "BackgroundLocation";
    private Context context;
    private boolean stopService = false;
    private Handler handler;
    private Runnable runnable;
    private NotificationCompat.Builder builder = null;
    private NotificationManager notificationManager;

    @Override
    public void onCreate() {
        Log.e(TAG, "Background Service onCreate :: ");
        super.onCreate();
        context = this;

        handler = new Handler();
        runnable = new Runnable() {

            @Override
            public void run() {
                try {
                    //Add Here your code if you want start in background
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    handler.postDelayed(this, TimeUnit.SECONDS.toMillis(2));
                }
            }
        };
        if (!stopService) {
            handler.postDelayed(runnable, TimeUnit.SECONDS.toMillis(2));
        }
    }

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

    @Override
    public void onTaskRemoved(Intent rootIntent) {
        super.onTaskRemoved(rootIntent);
        Log.e(TAG, "onTaskRemoved :: ");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.e(TAG, "onStartCommand :: ");
        StartForeground();
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.e(TAG, "BackgroundService onDestroy :: ");
        stopService = true;
        if (handler != null) {
            handler.removeCallbacks(runnable);
        }
    }

    /*-------- For notification ----------*/
    private void StartForeground() {
        Intent intent = new Intent(context, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);

        String CHANNEL_ID = "channel_location";
        String CHANNEL_NAME = "channel_location";

        notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_DEFAULT);
            channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
            notificationManager.createNotificationChannel(channel);
            builder = new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID);
            builder.setColorized(false);
            builder.setChannelId(CHANNEL_ID);
            builder.setColor(ContextCompat.getColor(this, R.color.colorPrimaryDark));
            builder.setBadgeIconType(NotificationCompat.BADGE_ICON_NONE);
        } else {
            builder = new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID);
        }
        builder.setOnlyAlertOnce(true);
        builder.setContentTitle(context.getResources().getString(R.string.app_name));
        builder.setContentText("Your Text");
        Uri notificationSound = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_NOTIFICATION);
        builder.setSound(notificationSound);
        builder.setAutoCancel(true);
        builder.setSmallIcon(R.mipmap.ic_notification_app_icon);
        builder.setContentIntent(pendingIntent);
        startForeground(101, builder.build());
    }
}

我希望这可以帮助您！

谢谢。