在自定义UIVIew中将子视图置于最前面

Question

I am using a custom UIView which contains the following elements by default (after init is called these are set) :

• UIImageView
• UIView
• UIView

these are declared as open var in class code.

In my code I am adding another UIView like this:

myView?.addSubview(div)
myView?.bringSubview(toFront: div)

Now calling bringSubviewToFront works only on the div element which was added by code and not on the default views.

myView?.bringSubview(toFront: myView?.likedView)

How can I bring the UIViews to front?

Answer 1

First clear the concept for bringSubviewToFront .

bringSubviewToFront can works only for direct subview or childview I mean you cannot do it for subview's subview.

For example you have view hierarchy like,

A -> B -> C

A is parent, B is it's subview and C is B's subview.

Now you can directly do like

 A?.bringSubview(toFront: B)

but can't do like,

 A?.bringSubview(toFront: C)

If you want C to bring in front then you have to do like,

 A?.bringSubview(toFront: B)

 B?.bringSubview(toFront: C)