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iphoneuitableviewuitabview

iPhone SDK: Know when tab on Tab Bar is clicked?


I have a tab bar which displays different views when clicked. When you click a tab for the first time, it calls the viewDidLoad method. But, it only calls that the first time.

Is there a method that is called when a user clicks back to that tab, since the viewDidLoad won't be called that second time?

(I need to do this to update a UITableView when the user clicks back to a tab)


Solution

  • Of course!

    - (void)tabBarController:(UITabBarController *)aTabBarController didSelectViewController:(UIViewController *)viewController
    

    Your best option when looking for these sorts of things is to look in the documentation, specifically at the delegate for the object you're interested in. http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UITabBarControllerDelegate_Protocol/Reference/Reference.html