我正在尝试使用我的iOS应用程序查找Chromecast设备。我已经通过CocoaPods下载了castSDK，然后尝试以下操作:letgckCastOptions=GCKCastOptions(receiverApplicationID:kGoogleCastAppReceiverId)GCKCastContext.setSharedInstanceWithOptions(gckCastOptions)GCKLogger.sharedInstance().delegate=selfself.discoveryManager=GCKCastContext.sharedInstance(