iOS FPS的检测器
pod 'STFPSIndicator', :configurations => ['Debug']
github "stzhenzhaoliang/STFPSIndicator" "1.0"
/** 1.初始化, 视图一定要添加到UIWindow初始化事件之后,否则没法显示 */
+ (STFPSIndicator *)sharedFPSIndicator;
/** 2.显示视图 */
- (void)show;
/** 3.隐藏视图 */
- (void)hide;