iosuiviewsubviewsuperview

UIView. How Do I Find the Root SuperView Fast?

I have a random child view in a view hierarchy. What is the best/fastest/cleverest way to get to the root superview?

Cheers,
Doug

Solution

  • If your app only has one UIWindow (usually true), and if that window's only subview is your root controller's view (also usually true):

    [randomChildView.window.subviews objectAtIndex:0]

    Or you could recursively climb out of the hierarchy, by checking view.superview until you find a view whose superview is nil.