如何在iPhone锁屏中设置当前播放音频的标题？ [英] How to set an title of the currently playing audio in iPhone lock screen?

问题描述

当您播放音乐时，音乐标题会显示在锁定屏幕中的时间下方。

When you play a music, the music title is shown below the time in the lock screen.

我还看到了TuneIn无线电如何通过显示名称来实现当前正在播放的广播电台。

I have also seen how TuneIn radio does that by showing the name of the currently playing radio station.

你是怎么做到的？

推荐答案

阅读文档： MPNowPlayingInfoCenter

Read the documentation: MPNowPlayingInfoCenter

这是一个可以在iOS 5上运行的示例代码，它不会在旧版本的iOS上崩溃。

And here is an example code that will work on iOS 5 and it will not crash on older versions of iOS.

Class playingInfoCenter = NSClassFromString(@"MPNowPlayingInfoCenter");

if (playingInfoCenter) {
    MPNowPlayingInfoCenter *center = [MPNowPlayingInfoCenter defaultCenter];
    NSDictionary *songInfo = [NSDictionary dictionaryWithObjectsAndKeys:
                             @"Some artist", MPMediaItemPropertyArtist,
                             @"Some title", MPMediaItemPropertyTitle,
                             @"Some Album", MPMediaItemPropertyAlbumTitle,
                             nil];
    center.nowPlayingInfo = songInfo;
}

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