swift -> Timer 定时器

循环的

var changeColorTimer : Timer?

 

 

changeColorTimer = Timer.scheduledTimer(timeInterval: 0.3, target: self, selector: #selector(ViewController.setTopBarBg), userInfo: nil, repeats: true);

 

 

解决 在滚动的时候 Timer 停止

RunLoop.main.add(changeColorTimer!, forMode: RunLoopMode.commonModes);