Question

For some reasons I restrict my app to work only on landscape mode, but strangely when I open iPod music library from my app, it will always jump out in portrait mode.

See the following code, I am confused whether it is system default behavior? How can I tell it to come out in landscape mode (keep consistent with other UI)? Thanks.

- (IBAction)getMusic:(id)sender {
    MPMediaPickerController *picker = [[MPMediaPickerController alloc] initWithMediaTypes: MPMediaTypeMusic];
    picker.delegate                     = self;
    picker.allowsPickingMultipleItems   = YES;
    picker.prompt                       = NSLocalizedString (@"Add songs to play",nil);

    [self presentModalViewController: picker animated: NO];
    [picker release];
}


- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        return UIInterfaceOrientationIsLandscape(interfaceOrientation);;
    } else {
        return YES;

    }
}

Answer 1

From the MPMediaPickerController Class reference:

Notes: The MPMediaPickerController class supports portrait mode only.
This class does support subclassing. The view hierarchy for this class
is private; do not modify the view hierarchy.

There are posts here and elsewhere that describe workaround, but I can’t vouch for them.