Wsrtjtyk

I'm developing for a Huawei watch 2. When an alarm sms arrives, the watch should switch to the AlertScreen, and start vibrating. It works like 99% of the time, but sometimes the vibrating is not happening. I've already refactored the code a lot of times, but can't figure out where the bug is.

MainActivity

I'm registering a listener for receiving the SMS, and then calling the startAlert function to start the vibrating:

public class MainActivity extends FragmentActivity {



    private final FragmentManager supportFragmentManager = getSupportFragmentManager();

    private final SmsBroadcastReceiver smsBroadcastReceiver = new SmsBroadcastReceiver();

    private final AlertFragment alertFragment = new AlertFragment();

    private static final String SENDER_PHONE_NUMBER = MyApplication.getAppContext().getResources().getString(R.string.sender_phone);



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        supportFragmentManager.beginTransaction().replace(R.id.fragment_container, new MainFragment()).commit();



        registerReceiver(smsBroadcastReceiver, new IntentFilter(Telephony.Sms.Intents.SMS_RECEIVED_ACTION));

        smsBroadcastReceiver.setListener(new SmsListener() {

            @Override

            public void messageReceived(final String phoneNumber) {

                startAlert(phoneNumber);

            }

        });

    }



    private void startAlert(final String phoneNumber) {

        Handler handler = new Handler();

        handler.postDelayed(new Runnable() {

            @Override

            public void run() {

                if (alertFragment.isRunning || phoneNumber.equals(SENDER_PHONE_NUMBER)) {

                    supportFragmentManager.beginTransaction().replace(R.id.fragment_container, alertFragment).commitAllowingStateLoss();

                    alertFragment.startAlert(phoneNumber);

                }

            }

        }, 4000);

    }

}

AlertFragment:

In this fragment in the startAlert Im adding a helper class to the executorService, which will start the actual vibrating. The isRunning variable is here, because while running if the watch receives a new message from another number, it usually stopped the vibration.

public class AlertFragment extends Fragment {



    private Button cancelButton;

    private Future longRunningTaskFuture;

    private ConnectionService mService;

    private PowerManager powerManager;

    private FragmentManager supportFragmentManager;

    private PowerManager.WakeLock wakeLock;

    AlertHelper longRunningTask = new AlertHelper();

    public boolean isRunning = false;

    private boolean mBound = false;

    private final String TYPE = "feedback";

    private static final String SENDER_PHONE_NUMBER = MyApplication.getAppContext().getResources().getString(R.string.sender_phone);

    private View.OnClickListener onAlertButtonPressedListener = new View.OnClickListener() {

        @Override

        public void onClick(View v) {

            mService.sendMessage(new Message(TYPE, "1").toJson());

            supportFragmentManager.beginTransaction().replace(R.id.fragment_container, new MainFragment()).commit();

            stopAlert();

        }

    };



    @Override

    public void onCreate(@Nullable Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

    }



    @Override

    public void onStart() {

        super.onStart();

        supportFragmentManager = getActivity().getSupportFragmentManager();

    }



    @Override

    public void onAttach(Context context) {

        super.onAttach(context);

        wakeUpWatch();

        Intent intent = new Intent(context, ConnectionService.class);

        context.bindService(intent, mConnection, Context.BIND_AUTO_CREATE);

    }



    @Nullable

    @Override

    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.alert_fragment, container, false);

        if (view != null) {

            cancelButton = (Button) view.findViewById(R.id.stop_button);

            cancelButton.setOnClickListener(onAlertButtonPressedListener);

        }

        ((DrawerLock) getActivity()).setDrawerLocked(true);

        return view;

    }



    @Override

    public void onSaveInstanceState(Bundle outState) {

        //No call for super(). Bug on API Level > 11.

    }



    @Override

    public void onDestroyView() {

        super.onDestroyView();

        ((DrawerLock) getActivity()).setDrawerLocked(false);

    }



    public void startAlert(String phoneNumber) {

        ExecutorService executorService = Executors.newSingleThreadExecutor();

        // submit task to threadpool:

        if (isRunning || phoneNumber.equals(SENDER_PHONE_NUMBER)) {

            longRunningTaskFuture = executorService.submit(longRunningTask);

            isRunning = true;

        }

    }



    public void stopAlert() {

        longRunningTaskFuture.cancel(true);

        longRunningTaskFuture = null;

        isRunning = false;

        longRunningTask.vibrator.cancel();

        releaseWakeLock();

    }



    private void wakeUpWatch() {

        Intent intent = new Intent(getActivity().getApplicationContext(), MainActivity.class);

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // You need this if starting

        //  the activity from a service

        intent.setAction(Intent.ACTION_MAIN);

        intent.addCategory(Intent.CATEGORY_LAUNCHER);

        startActivity(intent);

        powerManager = (PowerManager) MyApplication.getAppContext().getSystemService(POWER_SERVICE);

        wakeLock = powerManager.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_BRIGHT_WAKE_LOCK,"MyWakelockTag");

        wakeLock.acquire();

    }



    private void releaseWakeLock() {

        if (wakeLock != null && wakeLock.isHeld()) {

            wakeLock.release();

        }

    }



    private ServiceConnection mConnection = new ServiceConnection() {



        @Override

        public void onServiceConnected(ComponentName className,

                                       IBinder service) {

            ConnectionService.LocalBinder binder = (ConnectionService.LocalBinder) service;

            mService = binder.getServiceInstance();

            mBound = true;

        }



        @Override

        public void onServiceDisconnected(ComponentName arg0) {

            mBound = false;

        }

    };

}

And finally, the AlertHelper class will actually start the vibration:

public class AlertHelper implements Runnable {



    Vibrator vibrator = (Vibrator) MyApplication.getAppContext().getSystemService(Context.VIBRATOR_SERVICE);

    public volatile boolean isRunning;

    private final long mVibratePattern = new long{0, 400, 800, 600, 800, 800, 800, 1000};

    private final int mAmplitudes = new int{0, 255, 0, 255, 0, 255, 0, 255};



    @Override

    public void run() {

        this.isRunning = true;

        if (this.vibrator != null) {

            this.vibrator.vibrate(VibrationEffect.createWaveform(mVibratePattern, mAmplitudes, 0));

        }

    }

}

So i have no idea, the vibration usually works as it should, but sometimes it just don't. I always had this bug with every implementation, so I'm starting to think that it could be a bug I'm not aware of. What could be the solution here?

EDIT:

The bug is not in the MainActivity, since the screen is always changing as it should, so the problem must be with the alert classes