Creating Nested Views
It is often convenient to hold views within other views. We can nest views by putting a view inside of another view. In this case, the inner view is the subview and the outer view is the superview. The relationship of subview and superview is relative and in many cases, a view that is a superview to a view it contains, is also a subview to view that it is itself contained by. It can be helpful, when animating multiple views, to group them together inside a containing superview so we don't have to animate each view individually; instead, we can just animate the superview, and the subviews will go along for the ride!
- Drag a UIView from the Object Library onto your ViewController in the Storyboard.
- If you don't want the view to be seen, you can set it's background to clear color.
- Method 1: Drag the views you want to be add inside your superview from the Object Library into the parent view in the Storyboard.
- Method 2: Drag the views you want to be nested from the Object Library into the Document Outline.
- Note: If you have image assets that you want to use, go to the Media Library and drag the image you want from there. The image will automatically be put into an image view as you drag it onto the storyboard or document outline.
- You can change which views are in front or back (View Hierarchy) by adjusting there order in the Document Outline.
- Views below other views in the Document Outline appear in front.
Embed in View, found in the Editor drop down menu, allows you to add one or more existing views into a new view. This can be helpful in the case where you have multiple views arranged in the storyboard, and you don't want their relative positions to be altered when adding them into another view. Embed in View will preserve the relative positions of the views to one another inside a new superview that is created.
<img src="https://i.imgur.com/zu0cQS7.png", width=300>
