如何正确连接到Google Cast设备，并使用自定义接收器投放网址？ [英] How to properly connect to Google Cast device and cast an url with an custom receiver?
问题描述
为了创建此内容，我在Github上使用了Google Cast参考 https://github.com/googlecast/CastHelloText- ios & https://github.com/googlecast/CastVideos-ios
For creating this I used Google Cast reference at Github https://github.com/googlecast/CastHelloText-ios & https://github.com/googlecast/CastVideos-ios
然后，如果你下载它看看我的代码块与谷歌Cast。如果您看到发生此错误的原因，请让我知道。因为我老实不知道这是一个Xcode还是Google Cast的错误..或者是最常见的错误..人类
Then if you downloaded it have a look at my block of code that has to do with Google Cast. If you see something that makes this error happen, please let me know. Because I honestly don't know if this a Xcode or a Google Cast bug.. or is the most common error.. Humans
启动模拟器，它会寻找有效的Chrome Cast设备在网络中。如果找到，将显示投射按钮。当你按下cast按钮，它将进入 chooseDevice（）函数，wil提出一个UIAlertController与您的网络中的设备，然后你可以选择一个设备to cast to。
Start the emulator, it wil look for active Chrome Cast devices in the network. If found the cast button wil appear. When you press the cast button it wil go to chooseDevice() function and wil present a UIAlertController with the device(s) in your network and then you can select an device you want to cast to.
如果您点击某个设备，它会转到 connectToDevice（）函数并建立连接。
If you clicked on an device it wil go to connectToDevice() function and make an connection.
连接时，应转到名为deviceManagerDidConnect的下一个函数。所以我收到一条消息连接.. 5秒后，我收到一条错误消息错误域= com.google.GCKError代码= 2。网络连接超时。当我重建项目，我得到一个不同的结果..deviceManagerDidConnect之后它现在将didConnectToCastApplication功能，这没有发生第一次。这是一个错误还是我做错了什么？
When it's connected it should go to the next function called "deviceManagerDidConnect". So I get an message "Connected".. after 5 seconds I get an error message "Error Domain=com.google.GCKError Code=2. Network connection timeout". When I rebuild the project I get an different outcome.. after the "deviceManagerDidConnect" It is now going to "didConnectToCastApplication" function and that didn't happen the first time. Is this a bug or am I doing something wrong?
我期望的是它将deviceManagerDidConnect，然后它将didConnectToCastApplication功能。之后所有的工作，我想要一个WKWebView ..我知道，（还）支持。所以我想投放一个我在一个Textfield的URL。
What I expect is that it is going to "deviceManagerDidConnect" and after that it is going to "didConnectToCastApplication" function. After that all works I want to cast a WKWebView.. I know that not (yet) supported. So I want to cast an URL I gave in an Textfield.
您使用的是什么版本的产品？在什么操作系统上？
GoogleCastSDK-2.5.1-Release，OS X Yosemite 10.10.1
Xcode版本6.1.1（6A2008a）
What version of the product are you using? On what operating system?
GoogleCastSDK-2.5.1-Release, OS X Yosemite 10.10.1
Xcode Version 6.1.1 (6A2008a)
提前感谢并度过美好的一天。
Thanks in advance and have a great day,
feri
下面您可以找到我的代码。
Below you can find my code..
// ==================== Google Cast ====================
// ==================== chooseDevice() ====================
func chooseDevice() {
if selectedDevice == nil {
let alertController = UIAlertController(title: "Choose device..", message: "", preferredStyle: .ActionSheet)
for device in deviceScanner.devices {
alertController.addAction(UIAlertAction(title: device.friendlyName, style: .Default, handler: { alertAction in
self.selectedDevice = device as GCKDevice
self.connectToDevice()
}))
}
let addCancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: { alertAction in
alertController.dismissViewControllerAnimated(true, completion: nil)
})
// Add action to the controller
alertController.addAction(addCancelAction)
// Finaly present the action controller
presentViewController(alertController, animated: true, completion: nil)
}
else {
updateButtonStates()
let mediaTitle = self.mediaInformation?.metadata.stringForKey(kGCKMetadataKeyTitle)
// mediaTitle.metadata.stringForKey(kGCKMetadataKeyTitle) //Silver Essence Castaway
// var mediaTitle = mediaInformation.metadata.stringForKey(kGCKMetadataKeyTitle)
NSLog("De waarde van kGCKMetadataKeyTitle is: \(kGCKMetadataKeyTitle)")
let alertController = UIAlertController(title: "Casting to: \(selectedDevice.friendlyName)", message: nil, preferredStyle: .ActionSheet)
let addDisconnectingAction = UIAlertAction(title: "Disconnect device", style: .Destructive, handler: { alertAction in
println("De waarde van mediaInformation is: \(mediaTitle)")
if mediaTitle != nil {
(mediaTitle != nil ? 1 : 0)
alertController.dismissViewControllerAnimated(true, completion: nil)
println("the else UIAlertController")
}
})
let addCancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: { alertAction in
println("De waarde van mediaInformation is: \(mediaTitle)")
if mediaTitle != nil {
(mediaTitle != nil ? 2 : 1)
alertController.dismissViewControllerAnimated(true, completion: nil)
println("else uiactionsheet")
}
})
// Add action to the controller
alertController.addAction(addDisconnectingAction)
alertController.addAction(addCancelAction)
// Finaly present the action controller
self.presentViewController(alertController, animated: true, completion: nil)
}
}
// ==================== updateStatsFromDevice() ====================
func updateStatsFromDevice() {
if mediaControlChannel != nil {
mediaInformation = mediaControlChannel.mediaStatus.mediaInformation
}
}
// ==================== isConnected() ====================
func isConnected() -> Bool {
return deviceManager.isConnected
}
// ==================== connectToDevice() ====================
func connectToDevice() {
if selectedDevice != nil {
// var info = NSBundle.mainBundle().infoDictionary!["CFBundleIdentifier"] as? NSString
// deviceManager = GCKDeviceManager(device: selectedDevice, clientPackageName: info)
deviceManager = GCKDeviceManager(device: selectedDevice, clientPackageName: "CFBundleIdentifier")
// NSLog("de waarde van info is \(info)")
NSLog("de waarde van selectedDevice is \(selectedDevice)")
deviceManager.delegate = self
deviceManager.connect()
}
}
// ==================== deviceDisconnected() ====================
func deviceDisconnected() {
NSLog("Device disconneted: \(selectedDevice.friendlyName)")
deviceManager = nil
selectedDevice = nil
mediaControlChannel = nil
textChannel = nil
}
// ==================== updateButtonStates() ====================
func updateButtonStates() {
if (deviceScanner.devices.count == 0) {
// Hide the cast button
chromecastButton.setImage(btnImage, forState: .Normal)
chromecastButton.hidden = true
}
if (deviceScanner.devices.count > 0) {
chromecastButton.setImage(btnImage, forState: .Normal)
chromecastButton.hidden = false
// Show cast button
if (deviceManager != nil) {
chromecastButton.setImage(btnImageSelected, forState: .Normal)
chromecastButton.hidden = false
}
}
}
// ==================== sendText ====================
@IBAction func sendText(sender: AnyObject) {
NSLog("Cast video")
if deviceManager == nil {
var alert = UIAlertController(title: "Not connected", message: "Please connect to Cast device", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
presentViewController(alert, animated: true, completion: nil)
return
}
// Define media metadata
var metaData = GCKMediaMetadata(metadataType: GCKMediaMetadataType.User)
metaData.objectForKey("CFBundleVersion")
metaData.setString("Bug Bunny!", forKey: kGCKMetadataKeyTitle)
metaData.setString("dit is allemaal maar was subtitles", forKey: kGCKMetadataKeySubtitle)
var url = NSURL(string: "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/images/BigBuckBunny.jpg")
metaData.addImage(GCKImage(URL: url, width: 480, height: 360))
// var mediaInformation = GCKMediaInformation(contentID: "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4", streamType: .None, contentType: "video/mp4", metadata: metaData as GCKMediaMetadata, streamDuration: 0, customData: nil)
mediaInformation = GCKMediaInformation(contentID: "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4", streamType: GCKMediaStreamType.None, contentType: "video/mp4", metadata: metaData, streamDuration: 0, customData: nil)
NSLog("waarde van mediainformation is : \(mediaInformation)")
self.mediaControlChannel?.loadMedia(mediaInformation, autoplay: true, playPosition: 0)
// textChannel.sendTextMessage(textFieldUrl.text)
}
// MARK: GCKDeviceScannerListener
// ==================== deviceDidComeOnline() ====================
func deviceDidComeOnline(device: GCKDevice!) {
NSLog("device found! \(device.friendlyName)")
updateButtonStates()
}
// ==================== deviceDidGoOffline() ====================
func deviceDidGoOffline(device: GCKDevice!) {
NSLog("device did go offline \(device.friendlyName)")
updateButtonStates()
}
// MARK: UIActionSheetDelegate
// ==================== actionSheet() ====================
func actionSheet(actionSheet: UIActionSheet, clickedButtonAtIndex buttonIndex: Int) {
if selectedDevice == nil {
if buttonIndex < deviceScanner.devices.count {
selectedDevice = deviceScanner.devices[buttonIndex] as GCKDevice
NSLog("Selecting device: \(selectedDevice.friendlyName)")
connectToDevice()
}
}
else {
if buttonIndex == 1 {
NSLog("Disconnecting device: \(selectedDevice.friendlyName)")
deviceManager.leaveApplication()
deviceManager.disconnect()
deviceDisconnected()
updateButtonStates()
}
else if buttonIndex == 0 {
// Join the existing session
}
}
}
// MARK: GCKDeviceManagerDelegate
// ==================== deviceManagerDidConnect() ====================
func deviceManagerDidConnect(deviceManager: GCKDeviceManager!) {
NSLog("Connected!")
updateButtonStates()
self.deviceManager.launchApplication(kReceiverAppID)
}
// ==================== didConnectToCastApplication() ====================
func deviceManager(deviceManager: GCKDeviceManager!, didConnectToCastApplication applicationMetadata: GCKApplicationMetadata!, sessionID: String!, launchedApplication: Bool) {
NSLog("application has launched")
// textChannel = HTCGTextChannel(namespace: "urn:x-cast:com.silver.essence.Silver")
// self.deviceManager.addChannel(textChannel)
mediaControlChannel = GCKMediaControlChannel()
mediaControlChannel.delegate = self
self.deviceManager.addChannel(mediaControlChannel)
mediaControlChannel.requestStatus()
}
// ==================== didFailToConnectToApplicationWithError() ====================
func deviceManager(deviceManager: GCKDeviceManager!, didFailToConnectToApplicationWithError error: NSError!) {
showError(error)
deviceDisconnected()
updateButtonStates()
}
// ==================== didFailToConnectWithError() ====================
func deviceManager(deviceManager: GCKDeviceManager!, didFailToConnectWithError error: NSError!) {
showError(error)
deviceDisconnected()
updateButtonStates()
}
// ==================== didDisconnectWithError() ====================
func deviceManager(deviceManager: GCKDeviceManager!, didDisconnectWithError error: NSError!) {
NSLog("Received notification that device disconnected")
if error != nil {
showError(error)
}
deviceDisconnected()
updateButtonStates()
}
// ==================== didReceiveApplicationMetadata() ====================
func deviceManager(deviceManager: GCKDeviceManager!, didReceiveApplicationMetadata metadata: GCKApplicationMetadata!) {
applicationMetadata = metadata
}
// ==================== showError() ====================
func showError(error: NSError) {
var alert = UIAlertController(title: "Something went wrong", message: error.description, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
presentViewController(alert, animated: true, completion: nil)
}
// ==================== viewDidLoad() ====================
override func viewDidLoad() {
super.viewDidLoad()
self.loadNSUserDefaults()
NSNotificationCenter.defaultCenter().addObserver(self, selector: "saveNSUserDefaults", name: "kSaveSwitchesStatesNotification", object: nil);
navigationItem.title = "Settings"
// ==================== Adding the Chromecast button ====================
// kReceiverAppID = kGCKMediaDefaultReceiverApplicationID
NSLog("de waarde van kReceiverAppID in viewDidLoad() is : \(kReceiverAppID)")
btnImage = UIImage(named: "icon-cast-identified")
btnImageSelected = UIImage(named: "icon-cast-connected")
chromecastButton = UIButton()
chromecastButton.setImage(UIImage(named: "icon-cast-identified"), forState: .Normal)
chromecastButton.frame = CGRectMake(0, 0, 45, 45)
chromecastButton.addTarget(self, action: "chooseDevice", forControlEvents: .TouchUpInside)
chromecastButton.hidden = true
var rightItem:UIBarButtonItem = UIBarButtonItem()
rightItem.customView = chromecastButton
self.navigationItem.leftBarButtonItem = rightItem
// ==================== Scan for Chromecast devices ====================
deviceScanner = GCKDeviceScanner()
filterCriteria = GCKFilterCriteria(forAvailableApplicationWithID: kReceiverAppID)
deviceScanner.filterCriteria = filterCriteria
deviceScanner.addListener(self)
deviceScanner.startScan()
}
推荐答案
终于我发现了问题！它在接收器。当您连接到网络中的投放设备时，接收器正在加载的HTML文件。确保您的HTML文件具有连接回应用程序的正确函数。希望这将帮助一个遇到同样问题的人，而不是想周围的解决方案..
finally I found the problem! It was in the receiver. The HTML file that the receiver is loading when you connect to a cast device in your network. Make sure that your HTML file has the proper functions to connect back to the application. Hope this will help someone who is encounter the same problem and not to think about the solution for weeks..
如果你不知道哪些功能需要查看Google向我们提供的示例。
https://github.com/googlecast/
If you don't know which functions are needed look at the examples that Google have provided us. https://github.com/googlecast/
这篇关于如何正确连接到Google Cast设备，并使用自定义接收器投放网址？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
