CABasicAnimation "undeclared"

If you are new on iPhone development or XCode you probably get the following error:

error: 'CABasicAnimation' undeclared (first use in this function)

But how to fix this issue?

• First of all you have to learn, how to add a new framework to your include path. But what framework? Let's have al look at the class documentation: Link.
  As you can see, CABasicAnimation is part of the QuartzCore framework.
• Now let's add this framework to your project. Locate in Xcode the "Framework" folder, press the right mouse button, choose "Add" => "Existing Frameworks...".
• Choose "Quartz.Core.framework" and then press "Add".
• Now you can go to the .m file where you want to use the CABasicAnimation and add the following line to the existing import statements:
  

  #import "QuartzCore/CAAnimation.h"

• Compile your app