Button to trigger every 5 seconds

Question

My app needs tracking of real time so I need a button that needs to trigger every 5 seconds but I have no idea how to do it. Can you teach me how?

I want that in every 5 seconds that AsyncTask will be triggered.

btnStart.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        HashMap postLoc = new HashMap();
        postLoc.put("txtLat", tvLat.getText().toString());
        postLoc.put("txtLng", tvLong.getText().toString());
        postLoc.put("txtOwner", pref.getString("username","").toString());

        PostResponseAsyncTask taskLoc = new PostResponseAsyncTask(getActivity(), postLoc,false,  new AsyncResponse() {
            @Override
            public void processFinish(String s) {
                Log.d(TAG, tvLat.getText().toString());
                Log.d(TAG, tvLong.getText().toString());
                Intent i = new Intent(getActivity(),GPS_Service.class);
                getActivity().startService(i);
            }
        });

        taskLoc.execute("http://carkila.esy.es/carkila/locationUpdate.php");
    }
});

http://stackoverflow.com/questions/6531950/how-to-execute-async-task-repeatedly-after-fixed-time-intervals — Sachin Saxena, Sep 29 '16 at 05:33

score 1 · Accepted Answer · answered Sep 29 '16 at 05:41

1

I think this code might be useful to trigger the code every 5 second

 Timer timer;
TimerTask timerTask;
final Handler handler = new Handler();
 @Override
public void onCreate() {
    super.onCreate();             
    startTimer();
}

public void startTimer() {
    //set a new Timer
    timer = new Timer();

    //initialize the TimerTask's job
    initializeTimerTask();

    timer.schedule(timerTask, 0, 5000); 
}

public void initializeTimerTask() {
    timerTask = new TimerTask() {
        public void run() {
            handler.post(new Runnable() {
                public void run() {
                   //code to run after every 5 seconds
                }
            });
        }
    };
}

answered Sep 29 '16 at 05:41

Mihir Patel

599
1
5
10

i just declared the wrong Handler sir. Sorry for that. hehe :) – Batz Pogi Sep 29 '16 at 06:56
@MihirPatel Then how to stop that task once its started – androidXP Mar 30 '17 at 10:12
if (timer != null) { timer.cancel(); timer = null; } --> try to stop time by implementing this code @androidXP – Mihir Patel Mar 30 '17 at 10:18

score 0 · Answer 2 · answered Sep 29 '16 at 05:37

Create a method like this and call the method on button click and also call the method by using a handler like this:

mRunnable = new Runnable() {
        public void run() {
          public void toBecalled_Every_5_Second();
          mHandler.postDelayed(mRunnable, 5000);
        }
    };
 mHandler.postDelayed(mRunnable, 5000);


public void toBecalled_Every_5_Second(){
PostResponseAsyncTask taskLoc = new PostResponseAsyncTask(getActivity(), postLoc,false,  new AsyncResponse() {
                @Override
                public void processFinish(String s) {
                    Log.d(TAG, tvLat.getText().toString());
                    Log.d(TAG, tvLong.getText().toString());
                    Intent i = new Intent(getActivity(),GPS_Service.class);
                    getActivity().startService(i);
                }
            });
                taskLoc.execute("http://carkila.esy.es/carkila/locationUpdate.php");
}

so it will call the method every 5 second and the a sync task will execute....

score 0 · Answer 3 · answered Sep 29 '16 at 05:59

0

I would like to have a CountDownTimer which will trigger the button click function after every 5 seconds.

CountDownTimer mTimer = new CountDownTimer(50000, 1000) {

    public void onTick(long millisUntilFinished) {
        // Do nothing
    }

    public void onFinish() {
        btnStart.performClick();
        this.start();  // Restart
    }
}.start();

answered Sep 29 '16 at 05:59

Reaz Murshed

23,691
13
78
98

I think the time needed to restart the timer will be: btnStart.performClick() times + 5 s. – ישו אוהב אותך Sep 29 '16 at 06:42

ישו אוהב אותך · Answer 4 · 2016-09-29T06:59:51.833

You can use Timer with TimerTask and Handler to update the result to main thread i.e your UI.

Something like this:

Timer timer;
TimerTask timerTask;
//we are going to use a handler to be able to run in our TimerTask
final Handler handler = new Handler();

private void initializeTimerTask() {
  timerTask = new TimerTask() {
    public void run() {
      //use a handler to run process
      handler.post(new Runnable() {
        public void run() {
            /**************************/
            /** Do your process here **/
            /**************************/
        }
      });
    }
  };
}

private void startTimer() {
  //set a new Timer
  timer = new Timer();
  //initialize the TimerTask's job
  initializeTimerTask();
  //schedule the timer, start run TimerTask then run every 5000ms i.e 5 seconds.
  timer.schedule(timerTask, 0, 5000); //
}

private void stopTimerTask() {
  //stop the timer, if it's not already null
  if (timer != null) {
    timer.cancel();
    timer = null;
  }
}

Insert your processing code in Handler.post(). Then start the trigger by calling startTimer(). To stop the trigger, just call stopTimerTask().

Have you add `import android.os.Handler;` ? – ישו אוהב אותך Sep 29 '16 at 06:54 — ישו אוהב אותך, Sep 29 '16 at 06:54

Button to trigger every 5 seconds

4 Answers4