更改锁屏背景音频控制文本？

发布于 2024-11-18 21:51:39 字数 168 浏览 2 评论 0原文

我有一个使用 AVAudioSession 流式传输背景音频的 iOS 应用程序。它工作正常，但我很好奇，有什么方法可以更改锁定屏幕音频控件上的文本吗？现在它只显示我的应用程序的名称，但我想将其更改为曲目的名称。

此外，多任务栏的控件下没有文本 - 有没有办法像 iPod 应用程序那样在那里添加曲目名称？

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南笙 2024-11-25 21:51:39

iOS 5 现在支持在锁定屏幕和远程播放控件（双击主页按钮并向右滑动时获得的控件）中设置曲目标题以及专辑封面图像。看看
MPNowPlayingInfoCenter 类。当然，为了最大限度地提高兼容性，您需要通过执行以下操作来测试 MPNowPlayingInfoCenter 是否可用：

if ([MPNowPlayingInfoCenter class])  {
   /* we're on iOS 5, so set up the now playing center */
   UIImage *albumArtImage = [UIImage imageNamed:@"HitchHikersGuide"];
   albumArt = [[MPMediaItemArtwork alloc] initWithImage:albumArtImage];

    NSDictionary *currentlyPlayingTrackInfo = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:@"Life, the Universe and Everything", [NSNumber numberWithInt:42], albumArt, nil] forKeys:[NSArray arrayWithObjects:MPMediaItemPropertyTitle, MPMediaItemPropertyPlaybackDuration, MPMediaItemPropertyArtwork, nil]];
    [MPNowPlayingInfoCenter defaultCenter].nowPlayingInfo = currentlyPlayingTrackInfo;
}

iOS 5 now supports setting the track title as well as an album art image in both the lock screen and the remote playback controls (the controls you get when you double-click the home button and swipe right). Take a look at the
MPNowPlayingInfoCenter class. Of course, to maximize compatibility, you'd want to test whether MPNowPlayingInfoCenter is available, by doing something like:

if ([MPNowPlayingInfoCenter class])  {
   /* we're on iOS 5, so set up the now playing center */
   UIImage *albumArtImage = [UIImage imageNamed:@"HitchHikersGuide"];
   albumArt = [[MPMediaItemArtwork alloc] initWithImage:albumArtImage];

    NSDictionary *currentlyPlayingTrackInfo = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:@"Life, the Universe and Everything", [NSNumber numberWithInt:42], albumArt, nil] forKeys:[NSArray arrayWithObjects:MPMediaItemPropertyTitle, MPMediaItemPropertyPlaybackDuration, MPMediaItemPropertyArtwork, nil]];
    [MPNowPlayingInfoCenter defaultCenter].nowPlayingInfo = currentlyPlayingTrackInfo;
}

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江挽川 2024-11-25 21:51:39

这是快速的！（不再需要检查 iOS 5 及更高版本）

let albumArt = MPMediaItemArtwork(image: UIImage(named:"HitchHikersGuide"))
let albumDict = [MPMediaItemPropertyTitle: "Life, the Universe and Everything", MPMediaItemPropertyPlaybackDuration: 42, MPMediaItemPropertyArtwork: albumArt]
MPNowPlayingInfoCenter.defaultCenter().nowPlayingInfo = albumDict

here it is in swift! (no need to check for iOS 5 and up anymore)

let albumArt = MPMediaItemArtwork(image: UIImage(named:"HitchHikersGuide"))
let albumDict = [MPMediaItemPropertyTitle: "Life, the Universe and Everything", MPMediaItemPropertyPlaybackDuration: 42, MPMediaItemPropertyArtwork: albumArt]
MPNowPlayingInfoCenter.defaultCenter().nowPlayingInfo = albumDict

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~没有更多了~