管理你的第二屏（airPlay）

 

 

需求：

1、投射airplay后，有些页面或播放状态没有权限投射时，需要修改第二屏内容；

2、游戏时airplay后，iPhone当成手柄使用；

 

原来：

获取第二屏幕信息--->创建一个新的Window--->将新的Window对应的Screen屏幕设置为第二屏幕--->设置新的屏幕的UI显示。

 

获取第二屏幕信息

 

   @discardableResult public func connectExternalScreen() -> Bool{
        if UIScreen.screens.count > 1 {
            for screen in UIScreen.screens {
                if screen != UIScreen.main {//获取第二屏幕信息
                    self.didConnectExternalScreen(externalScreen: screen)
                    return true
                }
            }
        }
        return false
    }

 

 

创建一个新的Window--->将新的Window对应的Screen屏幕设置为第二屏幕--->设置新的屏幕的UI显示。

 

   fileprivate func didConnectExternalScreen(externalScreen: UIScreen) {
        if externalViewController == nil {//设置新的屏幕的UI显示。
            let viewController =  UIViewController()
            externalViewController = viewController
        }
        if externalWindow == nil {
            let window = UIWindow(frame: externalScreen.bounds)//创建一个新的Window
            externalWindow = window
            externalWindow?.rootViewController = externalViewController
            externalWindow?.isHidden = false
        }
        externalScreenStatus = .connected
        externalWindow?.screen = externalScreen//将新的Window对应的Screen屏幕设置为第二屏幕
        NotificationCenter.default.post(name: NSNotification.Name.ExternalScreenDidConnected, object: nil)
    }

 

 第二屏的状态监听：

extension ExternalScreenManager {
    
    public func beginObserveExternalScreen() {
        connectExternalScreen()
        NotificationCenter.default.addObserver(self, selector: #selector(self.externalScreenDidConnect(_:)), name: NSNotification.Name.UIScreenDidConnect, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(self.externalScreenDidDisconnect(_:)), name: NSNotification.Name.UIScreenDidDisconnect, object: nil)
    }
    
    public func stopObserveExternalScreen() {
        NotificationCenter.default.removeObserver(self, name:  NSNotification.Name.UIScreenDidConnect, object: nil)
        NotificationCenter.default.removeObserver(self, name:  NSNotification.Name.UIScreenDidDisconnect, object: nil)
    }
    
    
    @objc func externalScreenDidConnect(_ notifiaction:NSNotification) {
        let screen:UIScreen = notifiaction.object as! UIScreen
        self.didConnectExternalScreen(externalScreen: screen)
    }
    
    @objc func externalScreenDidDisconnect(_ notifiaction:NSNotification) {
        let screen:UIScreen = notifiaction.object as! UIScreen
        self.didDisconnectScrren(externalScreen: screen)
    }
}

 

demo：https://github.com/easyui/SwiftMan/blob/master/SwiftManExample/SwiftManExample/ExternalScreenManagerTest.swift