How to add a view behind other view in iOS

Besides addSubview, there are other methods you can rely on to add your view:

– insertSubview:aboveSubview:– insertSubview:belowSubview:– insertSubview:atIndex:

You can control the index (actually z-index, or layer order) of the view using these methods.

iphone ios view core-animation

[self.view sendSubviewToBack:leftPanelView];

iphone ios view core-animation

Swift 5

Insert a view below another view in the view hierarchy:

view.insertSubview(subview1, belowSubview: subview2)

Insert a view above another view in the view hierarchy:

view.insertSubview(subview1, aboveSubview: subview2)

Insert a subview at the specified index:

view.insertSubview(subview, at: index)

Move the specified subview so that it appears behind its siblings:

subview1.sendSubviewToBack(subview2)

Move the specified subview so that it appears on top of its siblings:

subview1.bringSubviewToFront(subview2)

Exchange the subviews at the specified indices:

view.exchangeSubview(at: index1, withSubviewAt: index2)