custom PopupWindow android

private void showAddTextPopup()
{ PopupWindow window1 = new PopupWindow(this);
 window1.setWidth(500);
 window1.setHeight(300);
 window1.setTouchable(true);
 window1.setFocusable(true);
 LayoutInflater inflater = (LayoutInflater) NotesActivity.this .getLayoutInflater();// .getSystemService // (Context.LAYOUT_INFLATER_SERVICE);
 View bottomView = inflater.inflate(R.layout.addtext, null);
 window1.setContentView(bottomView);
 window1.showAtLocation(bottomView, Gravity.CENTER_VERTICAL, 50, 50); }