//提示彈窗消息并自動消失方法

?func showAlertMessage(message:NSString?, duration:Float){

????????????let alertController = UIAlertController(title: "", message: message as String?,preferredStyle:.alert)

????????????self.present(alertController, animated: true, completion: nil)

????????????self.perform(#selector(dimissAlert), with: alertController, afterDelay: TimeInterval(duration))

? ? }

@objc func dimissAlert(alert:UIAlertController) {

? ????????? alert.dismiss(animated: true, completion: nil)

}

一些簡單的宏定義

let ScreenHeight:CGFloat = UIScreen.main.bounds.size.height//屏幕高度

let ScreenWidth:CGFloat = UIScreen.main.bounds.size.width//屏幕寬度

let NavigationHeight = (ScreenHeight == 812.0) ? 88 : 64//判斷是否iPhone X，返回不同的導航欄高度