如何使用ReplayKit的类RPBroadcastActivityViewController？

    
  - (IBAction)displayServiceViewController:(id)sender {
[RPBroadcastActivityViewController loadBroadcastActivityViewControllerWithHandler:^(RPBroadcastActivityViewController * _Nullable broadcastActivityViewController, NSError * _Nullable error) {
    broadcastActivityViewController.delegate = self;
    [self presentViewController:broadcastActivityViewController animated:YES completion:nil];
}];
}
</code>