Objective-C -将模型对象从控制器传递给Worker类

I am a complete newbie working on my first iPhone project. I have been a .NET developer for 4 years to give you some background on where I am coming from. I am trying to follow the MVC pattern and do things the right way on my first project. I don't want to hack things together just to get them to work.I am a complete newbie working on my first iPho