在iOS本机共享中显示GarageBand

Question

如何在iOS本机共享中显示GarageBand，以及如何在Xcode中对其进行配置？下面是我的代码，

UIActivityViewController *activityVC = [[UIActivityViewController alloc]initWithActivityItems:activityItemsArray applicationActivities:nil];
//    activityVC.excludedActivityTypes = @[UIActivityTypeAssignToContact, UIActivityTypeAddToReadingList, UIActivityTypeAirDrop];
    activityVC.modalInPopover = YES;