How to activate “Installed” programmatically?

Question

This is an UIView and I want to activate it (with its constraints etc.), when I want, how to do that? I don\'t want removefromsuperview etc. Just want

Answer 1

There are two options 1) hide 2) removeFromSuperview.

If You install or uninstall view from storyboard, It is equivalent to add/remove view.

refer this apple documentation it says,

A runtime object for an uninstalled view is still created. However, the view and any related constraints are not added to the view hierarchy and the view has a superview property of nil. This is different from being hidden. A hidden view is in the view hierarchy along as are any related constraints.

you can check this by two line of code,

 NSArray *arr = [self.view subviews];
 NSLog(@"arr is %@",arr);

swift:

let array: Array = self.view.subviews
print("Array is \(array)")

try it with installed and uninstalled. hope this will help :)