objective-ciphoneuiscrollviewsubviews

Remove all the subviews from a UIScrollView?

How do I remove all of the subviews from a UIScrollview?

Solution

  • Let scrollView be an instance of UIScrollView.

    In Objective-C, it's pretty easy. Just call makeObjectsPerformSelector:, like so:

    Objective-C:

    [scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];

    In Swift, you don't get that runtime access, so you have to actually handle the iteration yourself.

    Swift:

    A concise version, from here:

    scrollview.subviews.map { $0.removeFromSuperview() }

    A more descriptive way to do this (from here) assumes scrollview.subviews:

    let subviews = self.scrollView.subviews
for subview in subviews{
    subview.removeFromSuperview()
}