我在我的应用程序中使用AVPlayer直播&没问题。
但是当我尝试使用Alamofire.downlaod method
下载一些文件时,流停止工作。
AVPlayer
的rate
性质自动为零。
我认为线程可能有一些问题,但我没有得到它。
我的代码如下
override func viewDidLoad() {
play_Live_Stream()
}
override func viewWillAppear() {
Download_favourite_files()
}
func Download_favourite_files() {
for int i in arr_favourites{
Alamofire.download(urlString, to: destination).response { response in
print(response)
}
}
}
func play_Live_Stream(){
myplayerItem = AVPlayerItem(url: url as! URL)
myPlayer = AVPlayer(playerItem: myplayerItem)
myPlayer.volume = volume_slider.value
PlayerObserving = true
NotificationCenter.default.addObserver(self, selector: #selector(playInstalled(noti:)), name: NSNotification.Name.AVPlayerItemPlaybackStalled, object: myPlayer.currentItem)
NotificationCenter.default.addObserver(self, selector: #selector(playfailed(noti:)), name: NSNotification.Name.AVPlayerItemFailedToPlayToEndTime, object: myPlayer.currentItem)
myPlayer.currentItem?.addObserver(self, forKeyPath: "status", options: NSKeyValueObservingOptions.new, context: nil)
myPlayer.currentItem?.addObserver(self, forKeyPath: "timedMetadata", options: [.new,.old,.initial], context: nil)
myPlayer.currentItem?.addObserver(self, forKeyPath: "playbackLikelyToKeepUp", options: .new, context: nil)
}
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if ((object! as AnyObject).isEqual(myPlayer.currentItem) && keyPath=="status"){
if myPlayer.status == AVPlayerStatus.readyToPlay{
print("ReadyToPlay")
myPlayer.play()
}
}
}
TRY 2 (Default NSURLSession)
func load_downloads(){
for track in arr_tracks{
let urlString = BASE_URL + "/track/download/" + "(track.id)"
print("downloaded url",urlString)
let url = NSURL(string: urlString)
let downloadTask = backgroundSession.downloadTask(with: url as! URL)
downloadTask.resume()
}
}
func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
let destinationURLForFile = documentsURL.appendingPathComponent((downloadTask.originalRequest?.url?.lastPathComponent)! + "_" + (downloadTask.response?.suggestedFilename)!)
let fileManager = FileManager()
if fileManager.fileExists(atPath: destinationURLForFile.path){
}
else{
do {
try fileManager.moveItem(at: location as URL, to: destinationURLForFile as URL)
}catch{
print("An error occurred while moving file to destination url")
}
}
}
但它没有给我任何信息为什么流是停止。我也观察了stall &
尝试在主线程上播放流。
DispatchQueue.main.async { [unowned self]
self.play_Live_Stream()
}
尝试在主线程上播放流。
DispatchQueue.main.async {
for int i in arr_favourites{
Alamofire.download(urlString, to: destination).response { response in
print(response)
}
}
}