ios - 如何在 iOS11 的 Objective-C 控制中心上设置带有图像的音频细节？

Question

我正在尝试在控制中心显示音频详细信息，如随附的屏幕截图所示。

使用以下代码，它在除 iOS11 之外的所有 iOS 版本中都按预期工作：

if ([MPNowPlayingInfoCenter class])  {
    NSString *progress = (appDelegate.audioPlayer.progress == 0 || appDelegate.audioPlayer == nil ) ? @"0.0" : [NSString stringWithFormat:@"%f",appDelegate.audioPlayer.progress];
    NSString *duration = (appDelegate.audioPlayer.progress == 0 || appDelegate.audioPlayer == nil ) ? @"0.0" :[NSString stringWithFormat:@"%f",appDelegate.audioPlayer.duration];
    UIImage *image;
    if (appDelegate.selectedImg.length == 0 || appDelegate.selectedImg == nil) {
        image = [UIImage imageNamed:@"Music_Logo_1_"];
    }
    else{
        NSData *data=[NSData dataWithContentsOfURL:[NSURL URLWithString:appDelegate.selectedImg]];
        image = [UIImage imageWithData:data] != nil ? [UIImage imageWithData:data] : [UIImage imageNamed:@"Music_Logo_1_"];
    }
    NSDictionary *currentlyPlayingTrackInfo = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:appDelegate.selectedTitle != nil && ![appDelegate.selectedTitle isEqualToString:@""] ? appDelegate.selectedTitle : @"", appDelegate.selecteddesc != nil && ![appDelegate.selecteddesc isEqualToString:@""] ? appDelegate.selecteddesc : @"", progress , duration,[[MPMediaItemArtwork alloc] initWithImage:image],@"Music", nil] forKeys:[NSArray arrayWithObjects:MPMediaItemPropertyTitle,MPMediaItemPropertyAlbumTitle, MPNowPlayingInfoPropertyElapsedPlaybackTime ,MPMediaItemPropertyPlaybackDuration, MPMediaItemPropertyArtwork,MPMediaItemPropertyArtist, nil]];
    [MPNowPlayingInfoCenter defaultCenter].nowPlayingInfo = currentlyPlayingTrackInfo;
}

MPNowPlayingInfoCenter属性不适用于 iOS 11，它在较低版本的 iOS 中按预期工作。

iOS 11 中的输出：

预期结果：