In iOS8 the code to show a simple alert to the user is completely changed. UIAlertView is now deprecated:
The new class is UIAlertController and it is not complex to use (more in a minute). But we also want to support our iOS7 users, so wouldn’t it be nice to have a single class handling the different code? This is what we are going to create in this post.
Sometimes it happens to me to observe my code and to say: “no, these things should be made differently”. Then I go into “refactoring”. I think this is an important step of every programmer. Don’t be afraid to refactor (don’t listen to the voice inside you: “… don’t touch that code! Nothing will work correctly after changing this single byte …”): code is something always in evolution (and in test …).
Seeing the code of Part 2 I don’t like two different callbacks to be passed to the start method:
Design Patterns are something we should use not just because they exists, but because they help us to solve a real problem we are trying to fix. The problem I wanted to solve some times ago was the strong coupling of two view controllers when they want to communicate via a segue.