Close Android popup window with back press

Question

I have created a android application where I have created a popup screen. But when I am pressing the back button, popup is not getting closed.

I have tried with onB

Answer 1

//here "popUp" is ref of PopupWindow

popUp.setBackgroundDrawable(new BitmapDrawable());// it is most important peace of code

// For Key Listeners

View v = popUp.getContentView();

//Here assigning the key Listners

    v.setOnKeyListener(this);

    @Override   
    public boolean onKey(View v, int keyCode, KeyEvent event) {

        if(keyCode == KeyEvent.KEYCODE_BACK) popUp.dismiss();

        return false;

    }//Implements the KeyListener
     //and be careful we should implement "OnKeyListener"`

I hope it is useful (I'm the new user)