delegates - iOS - How to send a reference to a MapView nested within a UITabBarController -

This may be a simple question, but I took one of my apps from a visual based application in a window based application. Gaya. In the original app, I had a view controller and a map. I had a class that parsed some data and it was sent to the view controller. I used the following code from class to send data to classbase, which adds an annotation.

  Animation Probable App Delayed * App Delegate = (Annotation Problems App Delayed *) [[UIPACC Share Epicelling]]]; [AppDelegate.viewController Load Annotation];   
 I can not assign view controller because it will create a new instance of the view controller. When creating a class, I have to pass the context of the View Controller. I  
 Now when the map view is nested inside the UITBB Controller, then I am not sure how I reference the class from Classbie Passing along the nearest map. Do I need to add a new representative method or start the protocol? I hope this is enough information to tell me that I can make someone else clear.  
 Thank you in advance!   
 
 
 I understood it from myself [[UIApplication sharedApplication] delegate] to call me Your window-based application was coded to add everything.  
 
 
 I declared an IBOuttlet for my class "
 
 
   
 
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 IBOutlet MyClass * myClass;   
 
 Make my IBOutlet a property  
 @property (nonatomic, retain) IBOutlet MyClass * myClass;   
 
 Synchronize the property (be sure to release it too)  
 Synchronize @ myClass;   
 
 Connect the iBootlet to the View Controller in the Interface Builder in my app on which a Navigation inside the Tab Bar Controller and Tab Bar Controller Gation was the controller, I had to make sure that IBotlet went to the visual controller which was nested with navigation controllers.   
 
 Finally, my other classes referred to myClass To do this, I have called the UIApplication shared application with the following code:  
 MyAppDelegate * appDelegate = (MyAppDelegate *) [[UIApplication shared epicling]]]; [AppDelegate.myClass methodBeingCalled]; < / Li>  
 I hope that if you come into the same problem then Ddgar will!