Am I missing something. I didn't see where you said what happens. Is there an error message, crash, or just nothing happens? What button are you specifically talking about and where is the code that it is connected to?

"my Problem Occurs when i click another button in a diffrent view from the SaveViewController, which calls a method from FinalViewController." I don't think that is considered to be normal. A view controller in iOS is used to take control of the whole screen. Calling a previous controller is possible but if you are dealing with a user interface item, you have to concerned what it is connected to, as in the previous controller, not the current one.

Although tempted to look at your code, I don't normally click on links random suggested by people I don't know.