How to handle Back button with in the dialog?

dialog.setOnKeyListener(new Dialog.OnKeyListener() {

            @Override
            public boolean onKey(DialogInterface dialog, int keyCode,
                    KeyEvent event) {                   
                if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
                    finish();
                    dialog.dismiss();
                }
                return true;
            }
        });

You need to override OnCancel method. This method calls on Back Key press. Here's code which works perfect to me.

 AlertDialog alertDialog;

    alertDialog.setOnCancelListener(new OnCancelListener() 
    {                   
           @Override
            public void onCancel(DialogInterface dialog) 
             {
               // TODO Auto-generated method stub

                    dialog.dismiss();                           

            }
}); 

Hope this will help you, and accept it if it is helpful to you.

Thanks..

Try this

 new AlertDialog.Builder(this).setOnKeyListener(new DialogInterface.OnKeyListener() {

                        @Override
                        public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {

                            if(keyCode == KeyEvent.KEYCODE_BACK){
                                Logger.d(TAG, "--------- Do Something -----------");
                                return true;
                            }
                            return false;


                        }
                    })

Sounds like you want to set the OnCancelListener when you create the Dialog. It looks like this:

dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {         
    @Override
    public void onCancel(DialogInterface dialog) {
        //do whatever you want the back key to do
    }
});