How to get artwork of Mp3 file in iOS8

Question

How to get album art or artwork from MP3 file. My mp3 file is saved in NSDocument Directory. My code is:

NSURL *fileURL=[[NSURL alloc]initFileURLWithPath:[NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/%@.mp3",[listOfSong objectAtIndex:currentIndex]]]];
AVAsset *asset = [AVURLAsset URLAssetWithURL:fileURL options:nil];
if (asset != nil) {
    NSArray *keys = [NSArray arrayWithObjects:@"commonMetadata", nil];
    [asset loadValuesAsynchronouslyForKeys:keys completionHandler:^{
        NSArray *artworks = [AVMetadataItem metadataItemsFromArray:asset.commonMetadata
                                                           withKey:AVMetadataCommonKeyArtwork
                                                          keySpace:AVMetadataKeySpaceCommon];
        UIImage *albumArtWork;

        for (AVMetadataItem *item in artworks) {
            if ([item.keySpace isEqualToString:AVMetadataKeySpaceID3]) {

                // *** WE TEST THE IOS VERSION HERE ***

                if (TARGET_OS_IPHONE && NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_7_1) {
                    NSData *newImage = [item.value copyWithZone:nil];
                    albumArtWork = [UIImage imageWithData:newImage];
                }
                else {
                    NSDictionary *dict = [item.value copyWithZone:nil];
                    if ([dict objectForKey:@"data"]) {
                        albumArtWork = [UIImage imageWithData:[dict objectForKey:@"data"]];
                    }
                }
            }
            else if ([item.keySpace isEqualToString:AVMetadataKeySpaceiTunes]) {
                // This doesn't appear to get called for images set (ironically) in iTunes
                albumArtWork = [UIImage imageWithData:[item.value copyWithZone:nil]];
            }
        }

        if (albumArtWork != nil) {
            dispatch_sync(dispatch_get_main_queue(), ^{
                imageView.image = albumArtWork;
                [artworkImages addObject:albumArtWork];
            });
        }

    }];
}

But in above code, artworks array always return empty. Why? What is the solution?

Answer 1

Hope this will help.This piece of code works with ios 9 and xcode 7.

instead of using this line of code.

albumArtWork = [UIImage imageWithData:[item.value copyWithZone:nil]];

try this,since the metadata format has changed.

albumArtWork=[UIImage imageWithData:[item dataValue]];