如何使用MPMediaPickerController获取mp3的NSData？

Question

I want to upload mp3 from my phone to server, for this i am using MPMediaPickerController .

After getting URL of MPMediaItem , i want to get NSData of this url , but i am getting null in NSData.

- (void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems: (MPMediaItemCollection *) mediaItemCollection
{
    [self dismissViewControllerAnimated:YES completion:nil];

    MPMediaItem *item=[[mediaItemCollection items] objectAtIndex:0];
    NSURL *url = [item valueForProperty: MPMediaItemPropertyAssetURL];
    NSString *path = [NSString stringWithFormat:@"%@",url];
    NSData *data = [[NSFileManager defaultManager] contentsAtPath:path];
}

i also tried

NSData *data = [NSData dataWithContentsOfURL:url];

But data is null, why?

I also tried NOt able to convert from MPMediaItem(mp3 song) to NSData But not getting result.

Can any one guide me to get NSData of mp3.

Thanks in advance.

Answer 1

看一下这个库： https : //github.com/tapsquare/TSLibraryImport它可以将iPod音乐库中的非DRM项转换为mp3文件，然后您可以将它们保存或用作NSData进行进一步处理。