How to detect that a ViewController is activated?

Question

This is my second day of learning ios programming with xcode - so this should be an easy quwstion - just that I can't figure it out.

I am using StoryBoards and an UITabViewController with 3 tab items. On the second tab I would like to start the camera, whenever the user selects that tab.

How can I detect that the second view is activated? Is there an event triggered in such cases?

Answer 1

You can also use your ViewController's viewDidLoad method. Do whatever you need to in this method:

- (void)viewDidLoad
{
}