管理你的第二屏（airPlay）

来源：互联网发布：香港大学网络教育报名编辑：程序博客网时间：2024/05/17 01:54

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

阅读全文

0 0