Suppose you have a parentView into which you want to insert a new subView programmatically (eg. when you want to insert an UIImageView into a UIViewController’s view), than you can do it as below.
Objective-C
[parentView addSubview:subView];Swift
parentView.addSubview(subView)You can also add the subView below another subView2, which is already a sub view of parentView using the following code:
Objective-C
[parentView insertSubview:subView belowSubview:subView2];Swift
parentView.insertSubview(subView, belowSubview: subView2)If you want to insert it above subView2 you can do it this way:
Objective-C
[parentView insertSubview:subView aboveSubview:subView2];Swift
parentView.insertSubview(subView, aboveSubview: subView2)If somewhere in your code you need to bring a certain subView to front, so above all the others parentView’s subviews, you can do it like this:
Objective-C
[parentView bringSubviewToFront:subView];Swift
parentView.bringSubviewToFront(subView)Finally, if you want to remove subView from parentView, you can do as below:
Objective-C
[subView removeFromSuperview];Swift
subView.removeFromSuperview()