Core Data need help(beginner)

Question

I trying to make a Web Service application which will run when the program is on the background too and i will fetch my data from tree different URLs from my server. I read almost all of this and also this tutorials and even i watched CS193p Core Data Lectures too but still i cant get started with coding. This is my first Iphone(ipad) application, i use NSJSONSerialization for parsing. Can anyone please explain a little

• How many ManagedObjectContext s i need to declare?
• How to save data which come from different classes to the same entity?
• (The mos important) From where to get started with coding.. I think this is a kind of not wanted questioning but i really need help. Thanks in advance

Answer 1

I would suggest taking one of the core data sample apps from the ADC site and looking at how it's structured. You may even be able to adapt the code to your application. CoreRecipes is a great sample to learn from.

https://developer.apple.com/library/ios/#samplecode/iPhoneCoreDataRecipes/Introduction/Intro.html