Android-How to close progress dialog when back button is pressed

Question

How to close progress dialog when back button is pressed ?

Answer 1

By default progress dialog get dismiss, if you click on back button. Or, you can add this line:

progress.setCancelable(true);

Another option is you can call finish() and then progress.dismiss():

progress.setOnKeyListener(new ProgressDialog.OnKeyListener() {
        @Override
        public boolean onKey(DialogInterface arg0, int keyCode,
                KeyEvent event) {
            // TODO Auto-generated method stub
            if (keyCode == KeyEvent.KEYCODE_BACK) {
                finish();
                dialog.dismiss();
            }
            return true;
        }
});

Or, you override method onCancel() method in back key pressed button event.

Answer 2

A much better way.

          ProgressDialog dialog = new ProgressDialog(this);
          dialog.setCancelable(true);
          dialog.setOnCancelListener(new DialogInterface.OnCancelListener(){
             @Override
             public void onCancel(DialogInterface dialog){
                /****cleanup code****/
          }});           

The setCancelable method tells the ProgressDialog to close when the back button is pressed. The listener at the end allows you to do anything that may need to be done as a result of a cancel (like closing a socket).