swift -> Timer timer

 

Circular

var changeColorTimer: Timer?

 

 

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

 

 

Solve the Timer stop when scrolling

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