Send selector (reload) to current view

I have a reload-button in my UINavigationController that is supposed to send a reload-selector to the current loaded view, a.k.a the view on top. I can't figure out how I can achieve this.

I have no idea where to start, so 开发者_JAVA百科if someone could give me a pointer, that would be great :)

Thanks!

You can get controller that's on top of navigation stack via topViewController property in UINavigatiionController, so you'll get code something like (or you can get view from controller and send a message to it directly if you want):

UIViewController* topController = navigationController.topViewController;
if ([topController respondsToSelector:@selector(reload)]){
   [topController performSelector:@selector(reload)];
}

[navigationController.topViewController.view reload];