I have an iOS 4 app I developed 4 years ago that needs to run all iOS versions from 4 to 8. What is the best way to go about that. All I can think of is just go through all compiler failures and fix them while if I use any feature not present in iOS 4 I have to to do if else condition for using the feature/class etc.
Is there anything else I need to worry about?
I read this question and it is helpful but I am wondering what else. Is it possible to create an app iOS 4 - iOS 7 compatible with Xcode 5.0.2 on Mavericks?