How to stop Handler Runnable?

Question

I am using a handler in the following program and I want to stop it when i=5 but the handler doesn't stop and run continuously.

   b1.setOnClickListener(new OnClickListener() {          public void onClick(View v) {             handler = new Handler();            runnable = new Runnable() {                  public void run() {                      try {                         Toast.makeText(getApplicationContext(), "Handler is working", Toast.LENGTH_LONG).show();                         System.out.print("Handler is working");                         if(i==5){                            //Thread.currentThread().interrupt();                             handler.removeCallbacks(runnable);                               System.out.print("ok");                                         Toast.makeText(getApplicationContext(), "ok", Toast.LENGTH_LONG).show();                         }                        i++;                     } catch (Exception e) {                         // TODO Auto-generated catch block                         e.printStackTrace();                     }                     handler.postDelayed(this, 5000);                  }            };            handler.postDelayed(runnable, 5000);            //return;         }     }); 

Answer 1

Because you call postDelayed() again after removing call backs. Please use this code:

final Handler handler = new Handler(); final Runnable runnable = new Runnable() {          public void run() {                Log.d("Runnable","Handler is working");                if(i == 5){ // just remove call backs                     handler.removeCallbacks(this);                      Log.d("Runnable","ok");                 } else { // post again                     i++;                     handler.postDelayed(this, 5000);                  }        }    };  //now somewhere in a method  b1.setOnClickListener(new OnClickListener() {     public void onClick(View v) {         handler.removeCallbacks(runnable);          handler.postDelayed(runnable, 5000);      } }); 

Answer 2

protected void onStop() {     super.onStop();     handler.removeCallbacks(runnable); } 

you can stop it like this