我有一组按钮,我想使用 segue 将它们的标题发送到下一页。这是我所做的:
// in my first page i have :
@IBAction func btn_language_action(_ sender: UIButton) {
let chosen_language = sender.currentTitle!
print(chosen_language)
let game_level = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "game_level") as! game_level_viewController
self.present(game_level, animated: false, completion: nil)
performSegue(withIdentifier: "GL", sender: chosen_language)
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let game_level_viewController = segue.destination as! game_level_viewController
game_level_viewController.language = sender as? String
}
在第二个 View 中我有:
@IBOutlet weak var lang: UILabel!
var language : String?
override func viewDidLoad() {
super.viewDidLoad()
setUI()
}
func setUI (){
lang.text = language
print(language )
}
不过我可以成功传递信息,但是在我收到发送的内容之前已经加载了 View 。知道我该如何解决这个问题吗? 在我的控制台中:
language ==> nil
language ==> Optional("Persian")
最佳答案
问题出在这一行
self.present(game_level, animated: false, completion: nil)
为什么即使您已将 segue 交给 Controller ,您仍要显示此 Controller
去掉这两行就可以了
let game_level = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "game_level") as! game_level_viewController
self.present(game_level, animated: false, completion: nil)
关于ios - viewController 在 segue 通过之前呈现,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47149630/