我有一个storyviewcontroller,它的视图中有对象.我需要更改UILabel上的文本(在storyviewcontroller中)并加载数组上的视图.我已将IBOutlet连接到storyviewcontroller中的标签.
- class StoryViewController: UIViewController {
- @IBOutlet weak var textLabel: UILabel!
- @IBOutlet weak var inspiredButton: UIButton!
我创建了storyviewcontroller类的一个对象,并且能够访问它的变量.但是,在创建storyviewcontroller的对象之后,IBOutlet是零.因此,我得到一个例外,说明在打开时发现了nil
- let story:StoryViewController = StoryViewController()
- story.textLabel.text = sampleText()
能帮帮我吧！
这是整个项目的链接
https://github.com/abhishekagarwal2301/DTC
谢谢
IBOutlets在视图加载过程中初始化,并且在您尝试访问它们时无法访问它们.相反,您必须向viewcontroller声明一个字符串变量,并在其viewDidLoad方法上将文本设置为label(在加载过程完成后)
- class StoryViewController: UIViewController {
- @IBOutlet weak var textLabel: UILabel!
- @IBOutlet weak var inspiredButton: UIButton!
- var text:String!
- override func viewDidLoad() {
- super.viewDidLoad()
- textLabel.text = text
- }
- }
并从第一个控制器初始化文本变量如下
- let storyboard = UIStoryboard(name: "YourStoryboardName",bundle: nil)
- var story = storyboard.instantiateViewControllerWithIdentifier("YourVCIdentifier") as StoryViewController
- story.text = sampleText()
- self.presentViewController(story,animated: false,completion: nil)
