How can I access iPod Library in my iPhone app

问题

How access iPod Library in my iPhone app, like to the user listem music when is playing... like in the gameloft games, or the slide show from the Photos.app ?

回答1:

Look at MPMusicPlayerController. I read it can access the iPod library. I never used it, and I don't know if it can help you...

回答2:

- (void)addMusicBtnAction{
    MPMediaPickerController *mediaPicker = [[MPMediaPickerController alloc] initWithMediaTypes: MPMediaTypeAnyAudio];
    mediaPicker.delegate = self;
    //mediaPicker.prompt = @"Select Audio";
    mediaPicker.prompt = NSLocalizedString (@"Select any song from the list", @"Prompt to user to choose some songs to play");    
    for (UIWindow* window in [UIApplication sharedApplication].windows) {
        NSArray* subviews = window.subviews;
        if ([subviews count] > 0)
            for (UIAlertView *alrt in subviews) {
                if ([alrt isKindOfClass:[UIAlertView class]]){
                    if (alrt.tag == 10020) {
                        [alrt dismissWithClickedButtonIndex:0 animated:YES];
                    }
                }
            }
    }    
    [self presentModalViewController:mediaPicker animated:YES];
    //[mediaPicker release];
}
- (void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems: (MPMediaItemCollection *) mediaItemCollection
{
    NSArray * SelectedSong = [mediaItemCollection items];
    if([SelectedSong count]>0){
        MPMediaItem * SongItem = [SelectedSong objectAtIndex:0];
        NSURL *SongURL = [SongItem valueForProperty: MPMediaItemPropertyAssetURL];

        NSString *str = [NSString stringWithFormat:@"%@",SongURL];
        appDelegate.musicFilePath = str;
                //NSLog(@"Audio Loaded");
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Success!" message:@"Your audio has been selected"  delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles: nil, nil];
        alert.tag = 78787878;
        [alert show];
       // [alert release];
    }

    [self dismissModalViewControllerAnimated: YES];   
}
// Responds to the user tapping done having chosen no music.
- (void) mediaPickerDidCancel: (MPMediaPickerController *) mediaPicker {

    [self dismissModalViewControllerAnimated: YES];

    [[UIApplication sharedApplication] setStatusBarStyle: UIStatusBarStyleBlackOpaque animated:YES];
}

来源：https://stackoverflow.com/questions/4782377/how-can-i-access-ipod-library-in-my-iphone-app