PopupWindow的一些属性

 void setOutsideTouchable(boolean touchable) 
          Controls whether the pop-up will be informed of touch events outside of its window.
void setFocusable(boolean focusable) 
          Changes the focusability of the popup window.
 void update() 
          Updates the state of the popup window, if it is currently being displayed, from the currently set state.
原文地址:https://www.cnblogs.com/liguangsunls/p/7106616.html