如果您的UI在Storyboard中布局,您可以在第一个ViewController的viewDidLoad中设置NSTimer,然后在计时器触发时调用performSegueWIthIdentifier：
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view,typically from a nib.
let timer = Timer.scheduledTimer(interval: 8.0,target: self,selector: #selector(timeToMoveOn),userInfo: nil,repeats: false)
}
@objc func timeToMoveOn() {
self.performSegue(withIdentifier: "goToMainUI",sender: self)
}
以下是在Storyboard中设置segue的方法：
>控制从第一个ViewController的File’s Owner图标拖动到第二个ViewController.
>从弹出窗口中选择“模态”.
>单击视图控制器之间出现的segue箭头.在segue的Attributes Inspector中…>给你的segue一个标识符.>如果您不想看到屏幕滑入,请关闭动画.
