ios - 如何在 AVPlayer 中提取 MPMediaItemCollection 到 NSData？

Question

我想在我的应用程序中使用 avplayer 播放设备歌曲。在 NSLog 中，我得到数组值 ===> “18023427656013653237”， "15946441828903552798", "10791915036547881152", “17986655796364263078”//现在我想知道这些值是什么......

这个我试过了......

-(IBAction)SelectSongs:(id)sender
{

MPMediaPickerController *picker = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeAny];
picker.delegate = self;
picker.allowsPickingMultipleItems =YES;
picker.prompt = @"Select songs from the list";

[self presentViewController:picker animated:YES completion:^(void) {}];
}

-(void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems:  (MPMediaItemCollection *) mediaItemCollection
{


if (mediaItemCollection)
{
    NSMutableArray *medialibraryArray;
    medialibraryArray=[[NSMutableArray alloc]init];
    [medialibraryArray addObject:mediaItemCollection.items];// Modified
    NSLog(@"%@=========>",medialibraryArray);


}
[self dismissViewControllerAnimated:YES completion:^(void) {}];}

-(void) mediaPickerDidCancel: (MPMediaPickerController *) mediaPicker
{
[self dismissViewControllerAnimated:YES completion:^(void) {}];
}


// Thanks in Advance

Answer 1

-(void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems:  (MPMediaItemCollection *) mediaItemCollection
{


    if (mediaItemCollection)
    {
        NSArray *items = [mediaItemCollection items];
        for( int n=0; n < items.count; n++ )    {
            MPMediaItem *mediaItem = [items objectAtIndex:n];
            NSLog(@"%@=========>",[mediaItem valueForProperty:MPMediaItemPropertyTitle]);
        }

        MPMusicPlayerController *musicPlayer = [MPMusicPlayerController iPodMusicPlayer];
        [musicPlayer setQueueWithItemCollection: mediaItemCollection];
        NSLog(@"==>%@",musicPlayer);


    }
    [self dismissViewControllerAnimated:YES completion:^(void) {}];
}

您将使用它获取您音乐库中的所有歌曲，因此打印输出可能需要一段时间!阅读 MPMediaItem 类引用和媒体查询，了解如何获取整个音乐库的子集。