Ios XCode Swift-MultiPeerConnectivity/McAdvertiseAssistant未显示连接的接受/拒绝对话

目前正在尝试使多点连接正常工作。当前的问题是会话主机。加入会话的视图控制器工作正常，因为它显示主机的名称并允许我尝试连接，但是没有在主机设备上显示接受或拒绝的对话框，什么也没有发生，等待几秒钟后，尝试加入会话的设备超时，并显示主机已拒绝。我不明白我可能做错了什么，下面代码的相关部分

查看加入会话的控制器：

import MultipeerConnectivity

class DisplayActualViewController: UIViewController, MCSessionDelegate, MCBrowserViewControllerDelegate {
    
    var peerID: MCPeerID!
    var mcSession: MCSession!
    var mcAdvertiserAssistant: MCAdvertiserAssistant!

    override func viewDidLoad() {
        super.viewDidLoad()
        peerID = MCPeerID(displayName: UIDevice.current.name)
        mcSession = MCSession(peer: peerID, securityIdentity: nil, encryptionPreference: .required)
        mcSession.delegate = self
    }

    func session(_ session: MCSession, didReceive stream: InputStream, withName streamName: String, fromPeer peerID: MCPeerID) {

    }

    func session(_ session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, with progress: Progress) {

    }

    func session(_ session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, at localURL: URL?, withError error: Error?) {

    }

    func browserViewControllerDidFinish(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }

    func browserViewControllerWasCancelled(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }
    
    func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState) {
        switch state {
        case MCSessionState.connected:
            print("Connected: \(peerID.displayName)")

        case MCSessionState.connecting:
            print("Connecting: \(peerID.displayName)")

        case MCSessionState.notConnected:
            print("Not Connected: \(peerID.displayName)")
        }
    }

    func joinSession() {
        let mcBrowser = MCBrowserViewController(serviceType: "hws-testing", session: mcSession)
        mcBrowser.delegate = self
        present(mcBrowser, animated: true)
    }

import MultipeerConnectivity

class CounterViewController: UIViewController, MCSessionDelegate, MCBrowserViewControllerDelegate {
    var peerID = MCPeerID(displayName: UIDevice.current.name)
    var mcSession: MCSession!
    var mcAdvertiserAssistant: MCAdvertiserAssistant!

    override func viewDidLoad() {
        super.viewDidLoad()
        mcSession = MCSession(peer: peerID, securityIdentity: nil, encryptionPreference: .required)
        mcSession.delegate = self
        startHosting()
    }

    func startHosting() {
        mcAdvertiserAssistant = MCAdvertiserAssistant(serviceType: "hws-testing", discoveryInfo: nil, session: mcSession)
        mcAdvertiserAssistant.start()
    }

    func session(_ session: MCSession, didReceive stream: InputStream, withName streamName: String, fromPeer peerID: MCPeerID) {

    }

    func session(_ session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, with progress: Progress) {

    }

    func session(_ session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, at localURL: URL?, withError error: Error?) {

    }
    
    func session(_ session: MCSession, didReceive data: Data, fromPeer peerID: MCPeerID) {
        
    }

    func browserViewControllerDidFinish(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }

    func browserViewControllerWasCancelled(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }
    func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState) {
        switch state {
        case MCSessionState.connected:
            print("Connected: \(peerID.displayName)")

        case MCSessionState.connecting:
            print("Connecting: \(peerID.displayName)")

        case MCSessionState.notConnected:
            print("Not Connected: \(peerID.displayName)")
        }
    }

查看承载会话的控制器：

import MultipeerConnectivity

class DisplayActualViewController: UIViewController, MCSessionDelegate, MCBrowserViewControllerDelegate {
    
    var peerID: MCPeerID!
    var mcSession: MCSession!
    var mcAdvertiserAssistant: MCAdvertiserAssistant!

    override func viewDidLoad() {
        super.viewDidLoad()
        peerID = MCPeerID(displayName: UIDevice.current.name)
        mcSession = MCSession(peer: peerID, securityIdentity: nil, encryptionPreference: .required)
        mcSession.delegate = self
    }

    func session(_ session: MCSession, didReceive stream: InputStream, withName streamName: String, fromPeer peerID: MCPeerID) {

    }

    func session(_ session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, with progress: Progress) {

    }

    func session(_ session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, at localURL: URL?, withError error: Error?) {

    }

    func browserViewControllerDidFinish(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }

    func browserViewControllerWasCancelled(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }
    
    func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState) {
        switch state {
        case MCSessionState.connected:
            print("Connected: \(peerID.displayName)")

        case MCSessionState.connecting:
            print("Connecting: \(peerID.displayName)")

        case MCSessionState.notConnected:
            print("Not Connected: \(peerID.displayName)")
        }
    }

    func joinSession() {
        let mcBrowser = MCBrowserViewController(serviceType: "hws-testing", session: mcSession)
        mcBrowser.delegate = self
        present(mcBrowser, animated: true)
    }

import MultipeerConnectivity

class CounterViewController: UIViewController, MCSessionDelegate, MCBrowserViewControllerDelegate {
    var peerID = MCPeerID(displayName: UIDevice.current.name)
    var mcSession: MCSession!
    var mcAdvertiserAssistant: MCAdvertiserAssistant!

    override func viewDidLoad() {
        super.viewDidLoad()
        mcSession = MCSession(peer: peerID, securityIdentity: nil, encryptionPreference: .required)
        mcSession.delegate = self
        startHosting()
    }

    func startHosting() {
        mcAdvertiserAssistant = MCAdvertiserAssistant(serviceType: "hws-testing", discoveryInfo: nil, session: mcSession)
        mcAdvertiserAssistant.start()
    }

    func session(_ session: MCSession, didReceive stream: InputStream, withName streamName: String, fromPeer peerID: MCPeerID) {

    }

    func session(_ session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, with progress: Progress) {

    }

    func session(_ session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, at localURL: URL?, withError error: Error?) {

    }
    
    func session(_ session: MCSession, didReceive data: Data, fromPeer peerID: MCPeerID) {
        
    }

    func browserViewControllerDidFinish(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }

    func browserViewControllerWasCancelled(_ browserViewController: MCBrowserViewController) {
        dismiss(animated: true)
    }
    func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState) {
        switch state {
        case MCSessionState.connected:
            print("Connected: \(peerID.displayName)")

        case MCSessionState.connecting:
            print("Connecting: \(peerID.displayName)")

        case MCSessionState.notConnected:
            print("Not Connected: \(peerID.displayName)")
        }
    }

这对我很有用：

从使用SceneDelegate降级，不要使用UIScene

• 从Info.plist中完全删除“应用程序场景清单”条目

• 移除SceneDelegate类，并移除AppDelegate中与场景相关的方法

• 将“var窗口：UIWindow？”添加到AppDelegate类

---

iOS 13下的应用程序将具有与iOS 12相同的生命周期。而且，多电话连接应该按照最初设计的方式工作。

不会显示用于接受邀请的MCAdvertiseAssistant警报。因此，邀请超时，您会收到拒绝的回复

您可以通过将McAdvertiseAssistant替换为MCNearbyServiceAdvertiser来解决此问题

以下是一种通过3个步骤实现的方法：

将“mcAdvertiserAssistant”属性替换为：

var mcNearbyServiceAdvertiser:mcNearbyServiceAdvertiser！

将“startHosting（）”方法更改为：

func startHosting（）{
mcnearbyservicecadvertiser=mcnearbyservicecadvertiser（对等方：peerID，discoveryInfo:nil，服务类型：“硬件测试”）
mcNearbyServiceAdvertiser.delegate=self
mcNearbyServiceAdvertiser.startAdvertisingPeer（）
}

使用以下方法使“CounterViewController”类符合MCNearbyServiceAdvertiserDelegate：

func广告商（\uAdvertiser:mcnearbyservicecavertiser，direceiveinvitationfrompeer peerID:mcpeerind，上下文：Data？，invitationHandler:@escaping（Bool，MCSession？->Void）{
让appName=Bundle.main.infoDictionary？[“CbundLename”]作为？字符串？？“收到邀请”
让ac=UIAlertController（标题：appName，消息：“\（peerID.displayName）”想要连接。”，首选样式：。警报）
让declineAction=UIAlertAction（标题：“拒绝”，样式：。取消）{[weak self]\uUin invitationHandler（false，self？.mcSession）}
让acceptAction=UIAlertAction（标题：“Accept”，样式：。默认值）{[weak self]\uUin invitationHandler（true，self？.mcSession）}
ac.addAction（去线性化）
ac.addAction（验收）
当前（ac，动画：真）
}