popupwindow 的问题
popupwindow 显示后，当触屏点击非popupwindow显示区域，如何让这个popupwindow窗口消失？请帮忙，谢谢！！
[最优解释]
if (pop == null) {
pop = new PopupWindow(menuview, screenWidth/2, screenHeight/2, true);
pop.setBackgroundDrawable(this.getResources().getDrawable(R.drawable.select_device_bg));
pop.setTouchInterceptor(new OnTouchListener(){
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
if(event.getAction() == MotionEvent.ACTION_OUTSIDE)
{
pop.dismiss();
}
return false;
}
});
// pop.setAnimationStyle(R.style.PopupAnimation);
pop.setOutsideTouchable(true);
pop.showAsDropDown(view, Gravity.CENTER_HORIZONTAL, 0);
pop.update();
} else {
if (pop.isShowing()) {
pop.dismiss();
pop = null;