PopupWindow TouchInterceptor无法正常工作

Question

我正在尝试测试PopupWindow类.我创建了这个方法来显示弹出窗口:

    public void showPopup(){
            LayoutInflater layoutInflater   = (LayoutInflater)getBaseContext().getSystemService(LAYOUT_INFLATER_SERVICE);  
            View popupView = layoutInflater.inflate(R.layout.popup, null);
            final PopupWindow popup = new PopupWindow(popupView, 
                       LayoutParams.WRAP_CONTENT,  
                         LayoutParams.WRAP_CONTENT);  
            popup.setOutsideTouchable(true);
            popup.setTouchable(true);
            popup.setTouchInterceptor(new OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    Log.d("POPUP", event.toString());
                    if(event.getAction() == MotionEvent.ACTION_OUTSIDE){
                        popup.dismiss();
                        return true;
                    }
                    return true;
                }
            });
            popup.showAtLocation(findViewById(R.id.main), Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 200);
}

弹出窗口正确显示,看起来Touch Interceptor似乎根本不起作用:我没有得到任何日志信息,当然如果按下它之外弹出窗口也不会消失.

我是否需要在弹出窗口或托管它的Activity中设置一些其他属性？

Answer 1

 pw.setBackgroundDrawable (new BitmapDrawable());
 pw.setFocusable(false);
 pw.setOutsideTouchable(true); 

使用此代码希望这是有帮助的