重写onKeyDown方法
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==KeyEvent.KEYCODE_MENU){
Log.i("aaa", "keyCode="+keyCode);
PopupWindow .showXXXXXXX();
}
if(keyCode==KeyEvent.KEYCODE_BACK){
Log.i("aaa", "keyCode="+keyCode);
PopupWindow.dismiss();
return true;
}
return super.onKeyDown(keyCode, event);
}