在委托方法

Question

我想更改标签上的一些文字。这在viewDidLoad方法中按预期工作。但这在委托方法中不起作用。

代码：

class testView: UIViewController, RTCPeerConnectionDelegate, RTCDataChannelDelegate, RTCEAGLVideoViewDelegate {

    @IBOutlet var statusLabel: UILabel!




    override func viewDidLoad() {

    }

    public func peerConnection(_ peerConnection: RTCPeerConnection, didChange newState: RTCIceConnectionState){

       if(newState == RTCIceConnectionState.connected){
             DispatchQueue.main.async {                    
                self.statusLabel.text = "Connected";
             }
       }  
    }

}

我试图在主踏板上运行“标签更新”代码。不幸的是，这没有用。为什么这不起作用？

更新

我和一位代表一起试过这个，但没有运气：

class testView: UIViewController, RTCPeerConnectionDelegate, RTCDataChannelDelegate, RTCEAGLVideoViewDelegate {

    @IBOutlet var statusLabel: UILabel!
    var delegate : testView!


    override func viewDidLoad() {
        delegate = self
    }

    public func peerConnection(_ peerConnection: RTCPeerConnection, didChange newState: RTCIceConnectionState){

       if(newState == RTCIceConnectionState.connected){
             DispatchQueue.main.async {                    
                self.delegate.statusLabel.text = "Connected";
             }
       }  
    }

}