ios - 从其他 View Controller 访问 IBOutlet 按钮

Question

我需要访问和更改存在于另一个 View Controller 上的按钮的标题。这可能吗？如果是这样，我该如何实现？

View Controller 1:

Class Home: UIViewController
{
   @IBOutlet  weak var testBTN: UIButton!
}

View Controller 2:

Home.testBTN // does not work I can't access the button from here

我想我在 objective-c 中找到了解决方案，但我不知道如何快速完成 Access IBOutlet from another class

Answer 1

VC 2(发送通知):

let updateNotificationString = "com.yourcompany.yourapp.updatebutton"
NSNotificationCenter.defaultCenter().postNotificationName(updateNotificationString, object: self)

VC 1(接收和更新):

在viewDidLoad中:

let updateNotificationString = "com.yourcompany.yourapp.updatebutton"
NSNotificationCenter.defaultCenter().addObserver(self, selector: "updateButton", name: updateNotificationString, object: nil)

然后创建一个函数:

func updateButton() {
    testBTN.setTitle("New Title", forState: UIControlState.Normal)
}