ios - How to anchor a UIView to a specific place on Screen and keep it there even while scrolling

Question

I created a Snackbar style messages in Swift for iOS. I need to understand to which view I add the Snackbar as a subview. Example for one of the problems: I have a scrollview with a lot of content. When you press a button somewhere inside the UIScrollView I want the message to pop from the bottom of screen and it will stay at the bottom of the screen even if the user keeps scrolling the UIScrollView. How do I determine which view is above the scrollview for me to add snackbar as a subview to it?

Answer 1

将其添加到 View Controller 的内容视图中，并将视图置于顶部。

Answer 2

您需要创建一个单独的视图，该视图将在您填充它之前隐藏，它会漂浮在滚动视图上。它需要脱离滚动视图的上下文，以便它不会与所有其余内容一起移动。你仍然可以滚动，所以这应该可以解决问题。