React Native - Tips

React Native - iOS.md

• Get root navigation controller

AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
UIViewController *rootController = [[delegate window] rootViewController];
UINavigationController *rootNavigationController = (UINavigationController *)rootController;

• Present view controller

UIViewController *ctrl = [UIViewController new];
UINavigationController* navigationController = [[UINavigationController alloc] initWithRootViewController:ctrl];
UIViewController *presentingViewController = RCTPresentedViewController();
[presentingViewController presentViewController:navigationController animated:FALSE completion:nil];

• Get the top controller

- (UIViewController*) topMostController {
  UIViewController *topController = [UIApplication sharedApplication].delegate.window.rootViewController;
  
  while (topController.presentedViewController) {
    topController = topController.presentedViewController;
  }
  
  return topController;
}