使用AVPlayer时防止背景音频静音 [英] Prevent muting of background audio when using AVPlayer

问题描述

我正在使用AVPlayer实例播放视频，并且希望能够在播放视频的同时继续听背景音乐.

I am playing a video using an instance of AVPlayer and I want to be able to continue listening to background music while playing the video.

如果有任何后台应用程序正在播放音乐，则每当我在AVPlayer上调用 play 时，音乐就会被静音.如何防止背景音频被静音?

If any background app is playing music, the music is muted whenever I call play on the AVPlayer. How can I prevent background audio from being muted?

这是我创建和启动AVPlayer的方法:

Here's how I create and start my AVPlayer:

AVURLAsset *asset = [AVURLAsset URLAssetWithURL:videoURL options:nil];
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:asset];
AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];

playerLayer = [AVPlayerLayer playerLayerWithPlayer:player];
[self.layer addSublayer:playerLayer];

// mutes all background audio
[player play];

推荐答案

我能够通过在AppDelegate.swift类中执行以下操作来解决此问题:

I was able to solve this problem by doing the following in the AppDelegate.swift class:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategorySoloAmbient)
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
    } catch {

    }
    return true
}

我还验证了，如果我开始通过iTunes播放另一首歌曲，则会中断我的背景播放，这是我想要的行为.

I also verified that if I began playing another song through iTunes it would interrupt my background playback, which is the behaviour I wanted.

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