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Implementing a flowing background


I'm sometimes asked how to implement the background of an app I'm making called Four Choice Chemistry, so I wrote a sample code for it.
The icon image of the app flows through the background of the View.
Also, if you write animation-related methods in viewDidLoad, animations may stop due to navigation bar transitions.
In this case, writing the animation-related methods to viewWillAppear solves the problem.

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  1. PageViewController & PageControl
  2. Implementing CustomView with Code
  3. Nested implementation of UINavigationController in UITabBarController.
  4. Implement UITabBarController.
  5. Using Color Set to manage colors in Asset Catalog
  6. I sent a code-level question to an Apple engineer.
  7. Grading the UIView background