I wish to add a delegate method responding to an AVPlayerViewController event.
The event is about the visibility change of the transport bar.
But I can only find related documentation in Swift ...
optional func playerViewController(_ playerViewController: AVPlayerViewController,
willTransitionToVisibilityOfTransportBar visible: Bool, with coordinator: AVPlayerViewControllerAnimationCoordinator)
Can anybody who are knowledgeable about this can help in giving the corresponding method signature in Obj-C ?
You can see documentation for Objective-C by selecting it from the language dropdown on Apple's developer site: https://developer.apple.com/documentation/avkit/avplayerviewcontrollerdelegate/2876484-playerviewcontroller?language=objc
For that particular method the signature is
- (void)playerViewController:(AVPlayerViewController *)playerViewController
willTransitionToVisibilityOfTransportBar:(BOOL)visible
withAnimationCoordinator:(id<AVPlayerViewControllerAnimationCoordinator>)coordinator;
Another way is command-clicking the symbol in Xcode to jump to symbol's definition and then selecting Navigate -> Jump to Original Source/Generated Interface