在Swift中使用Container View进行委托 [英] Delegate using Container View in Swift
问题描述
我正在为iPad Pro开发一个应用程序.在此应用中,containerView
用于添加其他views
并与其交互.
I'm developing an app for iPad Pro. In this app, containerView
use to add additional views
and interact with them.
首先,我创建了一个协议:
First, I created a protocol:
protocol DataViewDelegate {
func setTouch(touch: Bool)
}
然后,我创建了我的第一个视图控制器
Then, I created my first view controller
import UIKit
class ViewController: UIViewController, DataViewDelegate {
@IBOutlet var container: UIView!
@IBOutlet var labelText: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
}
func setTouch(touch: Bool) {
if touch == true {
labelText.text = "Touch!"
}
}
}
最后,我创建了一个将嵌入到containerView中的视图.
And finally, I created a view that will be embedded in containerView.
import UIKit
class ContainerViewController: UIViewController {
var dataViewDelegate: DataViewDelegate?
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func touchMe(sender: AnyObject) {
dataViewDelegate?. setTouch(true)
}
}
但是由于某种原因,什么也没发生,第一个视图控制器在setTouch函数中什么也没收到.
But for some reason, nothing happened, the first view controller receives nothing in setTouch function.
我的问题是:在这种情况下,如何使用容器来实现两个ViewsController之间的通信?
推荐答案
看起来像您定义了委托,但尚未设置委托.这一直在我身上发生.
Looks like you defined the delegate, but have not set the delegate. This happens to me all the time.
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