@property(nonatomic) BOOL showsTouchWhenHighlighted __TVOS_PROHIBITED; // default is NO. if YES, show a simple feedback (currently a glow) while highlighted
效果如图所示,左图为点击前效果,右图是点击时且未释放高亮状态状态的效果
注意:当设置按钮图片后该设置失效,设置背景图无影响
@property(nonatomic) BOOL showsTouchWhenHighlighted __TVOS_PROHIBITED; // default is NO. if YES, show a simple feedback (currently a glow) while highlighted