iOS Swift m3u8后台播放不起作用

Question

我按下HOME按钮并从前台返回后尝试后台播放.m3u8。

按下按钮时停止。 请任何帮助。

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.

        var audioSession = AVAudioSession.sharedInstance()
        audioSession.setCategory(AVAudioSessionCategoryPlayback, error: nil)
        audioSession.setActive(true, error: nil)

        return true
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.


    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.



    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.


    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.

    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.


    }


}

的ViewController：

class ViewController: UIViewController {

    var myMoviePlayerView : MPMoviePlayerViewController!

    override func viewDidLoad() {
        super.viewDidLoad()


        let myButton = UIButton()
        myButton.frame.size = CGSize(width: 100, height: 40)
        myButton.layer.position = CGPoint(x: self.view.bounds.width/2, y: self.view.bounds.height/2)
        myButton.layer.masksToBounds = true
        myButton.layer.cornerRadius = 20.0
        myButton.backgroundColor = UIColor.orangeColor()
        myButton.setTitle("Play", forState: .Normal)
        myButton.setTitleColor(UIColor.whiteColor(), forState: .Normal)
        myButton.setTitleShadowColor(UIColor.grayColor(), forState: .Normal)
        myButton.addTarget(self, action: "onClickMyButton:", forControlEvents: .TouchUpInside)
        self.view.addSubview(myButton)

    }



    func onClickMyButton(sender: UIButton) {


        let url = NSURL(string :"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8")

        myMoviePlayerView = MPMoviePlayerViewController(contentURL: url)

        myMoviePlayerView.moviePlayer.movieSourceType = .Streaming

        NSNotificationCenter.defaultCenter().addObserver(self, selector: "moviePlayBackDidFinish:",
            name: MPMoviePlayerPlaybackDidFinishNotification,
            object: myMoviePlayerView.moviePlayer)

        self.presentViewController(myMoviePlayerView, animated: true, completion: nil)
    }

    func moviePlayBackDidFinish(notification: NSNotification) {
        println("moviePlayBackDidFinish:")

        NSNotificationCenter.defaultCenter().removeObserver(self, name: MPMoviePlayerPlaybackDidFinishNotification, object: nil)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

info.plist中

<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>**********************************</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>UIBackgroundModes</key>
<array>
    <string>audio</string>
</array>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<key>UIRequiredDeviceCapabilities</key>
<array>
    <string>armv7</string>
</array>
<key>UISupportedInterfaceOrientations</key>
<array>
    <string>UIInterfaceOrientationPortrait</string>
    <string>UIInterfaceOrientationLandscapeLeft</string>
    <string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
    <string>UIInterfaceOrientationPortrait</string>
    <string>UIInterfaceOrientationPortraitUpsideDown</string>
    <string>UIInterfaceOrientationLandscapeLeft</string>
    <string>UIInterfaceOrientationLandscapeRight</string>
</array>

Answer 1

我认为您正在使用MPMoviePlayerViewController播放音频，这就是问题产生的原因。

在属性列表（.plist）文件中添加名为必需的背景模式的密钥..

如下图..

并使用AppDelegate

在audioSession中添加此行

UIApplication.sharedApplication().beginReceivingRemoteControlEvents()

您可以从this

获得更多帮助