Why I can't find a way to play video with AVPlayerViewController - ios

Question

Hello everybody
I've been stuck with this problem with a whole day and actually I don't find a way to play a video file, I will explain a little bit what I did:
I have the following Url: [https://rapidresponse-us-oem-storage11.mios.com/storage/storage/store/8157061/archive?Key=833101823][1]
If you could see in that url I'm getting a video file .mp4 and I need to play this video, the following is the code that I'm using, first I'm saving the file and after that i'm trying to play in the AVPlayerViewController:
let store = self.eventDetail?.EventDetailStore!
let url = "https://" + (self.eventDetail?.EventDetailServerStorage)! + "/storage/storage/store/" + store! + "/archive?Key=" + self.EventKey!
if let videoUrl = NSURL(string: url) {
// create your document folder url
let documentsUrl = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as NSURL
// your destination file url
let destinationUrl = documentsUrl.URLByAppendingPathComponent(videoUrl.lastPathComponent!)
print(destinationUrl)
// check if it exists before downloading it
if NSFileManager().fileExistsAtPath(destinationUrl.path!) {
print("The file already exists at path")
let player = AVPlayer(URL: destinationUrl)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
self.presentViewController(playerViewController, animated: true) {
playerViewController.player!.play()
}
} else {
// if the file doesn't exist
// just download the data from your url
if let myAudioDataFromUrl = NSData(contentsOfURL: videoUrl){
// after downloading your data you need to save it to your destination url
if myAudioDataFromUrl.writeToURL(destinationUrl, atomically: true) {
print(destinationUrl)
let player = AVPlayer(URL: destinationUrl)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
self.presentViewController(playerViewController, animated: true) {
playerViewController.player!.play()
}
} else {
let alert = UIAlertController(title: "Alert", message: "An error occurred", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Close", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}
}
}
}
When I run the code i get the Video Controller but don't reproduce anything like no file exist, but the I debug the code and the file seems to be saved.
I will appreciate any help with this problem
Base on your suggestions I Updated the code, but it isn't work yet:
//video
var player: AVPlayer!
var destinationUrl: NSURL? = nil
dispatch_async(dispatch_get_global_queue(priority, 0)) {
let store = self.eventDetail?.EventDetailStore!
let url = "https://" + (self.eventDetail?.EventDetailServerStorage)! + "/storage/storage/store/" + store! + "/archive?Key=" + self.EventKey!
if let videoUrl = NSURL(string: url) {
let documentsUrl = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as NSURL
// your destination file url
destinationUrl = documentsUrl.URLByAppendingPathComponent(videoUrl.lastPathComponent!)
if NSFileManager().fileExistsAtPath(destinationUrl!.path!) == false {
if let myAudioDataFromUrl = NSData(contentsOfURL: videoUrl){
myAudioDataFromUrl.writeToURL(destinationUrl!, atomically: true)
}
}
}
dispatch_async(dispatch_get_main_queue()) {
if(destinationUrl != nil){
player = AVPlayer(URL: destinationUrl!)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
self.presentViewController(playerViewController, animated: true, completion: { () -> Void in playerViewController.player!.play() })
}
}
}
}

Answer 1

Your player is going out of scope and is being deallocated before your video has finished playing. Assign it to a class member to extend its lifetime.

Answer 2

You're missing the completion handler parameter:
self.presentViewController(playerViewController, animated: true) {
() in playerViewController.player!.play()
}