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objective-cios5ios4mpmediaitemmpmediapickercontroller

URL to MPMediaItem

I have a simple question but I can't find the right answer. I have a song url saved to my database in a path like this.

aSound.path = [[item valueForProperty: MPMediaItemPropertyAssetURL] absoluteString];

How to convert back to a MPMediaItem object which has songname artist and artwork?

Is it possible?

Solution

  • Saving:

        NSNumber* persistentID = 
[mediaItem valueForProperty:MPMediaItemPropertyPersistentID];

    Loading:

                MPMediaPropertyPredicate * predicate = 
              [MPMediaPropertyPredicate 
                predicateWithValue:persistentID 
                       forProperty:MPMediaItemPropertyPersistentID];

    Another example: NSNumber for MPMediaItemPropertyPersistentID to NSString and back again

    Note song URLs are are unreliable because any DRM song returns a null url