ios - 如何使用 MPMediaPickerController 获取所选文件的路径？

Question

这就是我用代码打开媒体选择器列表的方式

- (void)viewDidLoad
{
    [super viewDidLoad];

    player=[MPMusicPlayerController iPodMusicPlayer];

    picker=[[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeAnyAudio];

    [picker setDelegate:self];

    picker.prompt=@"Add an audio to application";
}

我也实现了它的委托(delegate)方法

- (void)mediaPicker:(MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection 
{
    /*I know only here I can get path but don't know how?
      mediaItemCollection don't have such kind of properties or any
      method to get selected file path.

      So is there any other way to do so?

      Note: I required this path, so that I can store it somewhere and can play it in future.
    */
}

Answer 1

从 mediaItemCollection.items 数组的某个索引初始化一个 MPMediaItem 对象:

MPMediaItem *anItem = (MPMediaItem *)[mediaItemCollection.items objectAtIndex: row];

然后调用 -valueForProperty: 方法:

NSURL *assetURL = [anItem valueForProperty: MPMediaItemPropertyAssetURL];

您可以从此处描述的 MPMediaItem 获得其他属性:http://bit.ly/GGs3XI

在“通用媒体项属性键”下查看

希望对您有所帮助!谭