当我从控制器创建单独的类时，Chromecast 监听器不起作用

Posted 2023-03-07

【中文标题】当我从控制器创建单独的类时，Chromecast 监听器不起作用

【英文标题】：Chromecast listener is not working when i create seperate class from Controller

【发布时间】：2016-05-20 10:33:03

【问题描述】：

创建的类：

class ChromeCast:NSObject 

    //MARK:Chromecast Vars
    var applicationMetadata: GCKApplicationMetadata?
    var selectedDevice: GCKDevice?
    var deviceManager: GCKDeviceManager?
    var mediaInformation: GCKMediaInformation?
    var mediaControlChannel: GCKMediaControlChannel?
    var deviceScanner: GCKDeviceScanner

    lazy var kReceiverAppID:String = 
        // You can add your own app id here that you get by registering with the
        // Google Cast SDK Developer Console https://cast.google.com/publish
        return kGCKMediaDefaultReceiverApplicationID
    ()


    override init() 

        let filterCriteria = GCKFilterCriteria(forAvailableApplicationWithID:
            kGCKMediaDefaultReceiverApplicationID)
        deviceScanner = GCKDeviceScanner(filterCriteria:filterCriteria)

    

    func startChromeCastScanning() 
        // Initialize device scanner
        deviceScanner.addListener(self)
        deviceScanner.startScan()
        deviceScanner.passiveScan = false
        Log.Info("Start Scanning")
    





extension ChromeCast: GCKDeviceScannerListener 

    func deviceDidComeOnline(device: GCKDevice!) 
        Log.Info("Device found: \(device.friendlyName)")

    

    func deviceDidGoOffline(device: GCKDevice!) 
        Log.Info("Device went away: \(device.friendlyName)")

    

并从我的视图控制器中调用它：

someFunctionInViewController() 

 let chrome = ChromeCast()
 chrome.startChromeCastScanning()

Delegate 没有被回调。当设备被发现时。

但是当我在视图控制器中添加所有属性和函数时，同样有效。 但我想将它与控制器分开。什么问题？

【参考方案1】：

我发现了问题 而不是本地我在我的控制器中声明 Chromecast 的全局属性

 var chrome : ChromeCast? 

然后从我的函数中我将其称为

func someFunction() 
  chrome = ChromeCast()
  chrome?.startChromeCastScanning()