how to stop Handler in Android?

Question

In My Application my handler doesn't stop. How can I stop the handler?
It continues to start after closing the activity. What can i do?

the code is :

 handler = new Handler()         {             @Override             public void handleMessage(Message msg)              {                 // TODO Auto-generated method stub                 super.handleMessage(msg);                 if(i<max)                 {                     evnetChangedisplay(i);                     i++;                         handler.sendEmptyMessageDelayed(0, 5000);                     }                 else                     {                         i = 0;                         handler.sendEmptyMessageDelayed(0,0000);                     }                 }         }; handler.sendEmptyMessageDelayed(0,000); 

Answer 1

It sounds like the activity finishes its lifecycle before the Handler executes the code. You can manage a handler.post(runnable) by creating an instance member for the handler and runnable, then managing the handler in the Activity Lifecycle methods.

private Handler myHandler; private Runnable myRunnable = new Runnable() {     @Override     public void run() {         //Do Something     } }; 

Start the runnable with handler.post.

protected void onStart() {     super.onStart();     myHandler = new Handler();     myHandler.post(myRunnable);  } 

If the runnable hasn't executed by the time onStop is called, we don't want to run it. Remove the callback in the onStop method:

protected void onStop() {     super.onStop();     mHandler.removeCallbacks(myRunnable); } 

Answer 2

use removeCallbacks or removeCallbacksAndMessages