Top "Responder-chain" questions

Is there any way of asking an iOS view which of its children has first responder status?

In Mac OS X, you can find the first responder like this: [[self window] firstResponder] Is there any way of …

ios cocoa-touch uiresponder responder-chain

What are the "First Responder" and "Exit" boxes purpose in the storyboard editor?

In the XCode IDE, at the bottom of the view controller in the MainStoryboard editor, are two boxes: First Responder, …

ios objective-c xcode cocoa responder-chain