Spotify 如何自定义 iOS 上的媒体播放控件？

Question

iOS 上的 Spotify 有一个非常有趣的控制中心集成。注意下面的汉堡包按钮。

锁屏也是一样！

他们是怎么做到的？ MPMediaCenter 里有没有 API 之类的东西？

Answer 1

是的，有一个 API

查看有关 remote control events you get two classes MPRemoteCommand and MPRemoteCommandCenter highlighted. Looking up MPRemoteCommandCenter 的 apple 文档中的说明会告诉您有许多命令，例如 likeCommand 或 dislikeCommand 您可以为其添加处理程序。向这些命令添加处理程序会使它们显示在控制中心中。

下面是一些一体化代码，可实现与屏幕截图中显示的结果几乎完全相同的结果：

- (void)showCustomizedControlCenter {
    /* basic audio initialization */
    NSString *soundFilePath = [NSString stringWithFormat:@"%@/test.mp3", [[NSBundle mainBundle] resourcePath]];
    NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];

    self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil];
    self.player.numberOfLoops = -1;
    [self.player play];

    /* registering as global audio playback */
    [[AVAudioSession sharedInstance] setActive:YES error:nil];
    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

    /* the cool control center registration */
    MPRemoteCommandCenter *commandCenter = [MPRemoteCommandCenter sharedCommandCenter];
    [commandCenter.playCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent *event) {
        return MPRemoteCommandHandlerStatusSuccess;
    }];
    [commandCenter.dislikeCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent *event) {
        return MPRemoteCommandHandlerStatusSuccess;
    }];
    [commandCenter.likeCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent *event) {
        return MPRemoteCommandHandlerStatusSuccess;
    }];
    [commandCenter.nextTrackCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent *event) {
        return MPRemoteCommandHandlerStatusSuccess;
    }];

    /* setting the track title, album title and button texts to match the screenshot */ 
    commandCenter.likeCommand.localizedTitle = @"Thumb Up";
    commandCenter.dislikeCommand.localizedTitle = @"Thumb down";

    MPNowPlayingInfoCenter* info = [MPNowPlayingInfoCenter defaultCenter];
    NSMutableDictionary* newInfo = [NSMutableDictionary dictionary];

    [newInfo setObject:@"Mixtape" forKey:MPMediaItemPropertyTitle];
    [newInfo setObject:@"Jamie Cullum" forKey:MPMediaItemPropertyArtist];

    info.nowPlayingInfo = newInfo;
}

除了写代码你还需要

将 AVFoundation 添加到您的项目中
#import <AVFoundation/AVFoundation.h> 和 #import <MediaPlayer/MediaPlayer.h>
在应用设置中激活背景模式"Audio and AirPlay"。

Spotify 如何自定义 iOS 上的媒体播放控件？

How does Spotify customize the media playback controls on iOS?

ios

mpmediaplayercontroller

control-center