ios - Can't call method from second ViewController -

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I'm having trouble creating my application I try to call any method from ViewController1 in my existing View Controller 2 I am doing

Mys I have declared the method in the File Viewer1 file, so it is visible. 

  - (zero) saveLocation;   
 I have the following in my ViewController2.h file  
  #import "ViewController1.h" @ Interface View Controller 2: UIViewController @property (nonatomic, Assign) View Controller 1 * Save the Method; @end   
 and in my ViewController2.m  
  [self.MethodSave saveLocation];   
 This does not work and I have tried to fix it for a while. Any help would be great. Thanks   
 
 
 I think you have only one property  @property (nonatomic, assign) in ViewController1 Has been declared * save the law;  But if this property is not allocated then first assign it then call the function.  
  MethodSave = [ViewController1New]; [Self. Method save place];   
 Also declare assets as strong as  @property (nonatomic, strong) ViewController1 * MethodSave;  This should work.  
 And try to declare the variable in the case of camel.

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