Passing back info between delegates on ObjectiveC

Question

I need to pass back an NSMutableArray of photos between a CameraSessionView; how store the photos taken from camera on an NSMutableArray, and a TableViewController how uploa

Answer 1

If you have to pass data from B View Controller To A view Controller

1. Create protocol in B View Controller as

   @protocol BViewControllerDelegate 
   -(void)didclickonSubmit:(NSArray*)selected_array;
   @end
   

2. Create an id, so that you can assign any class as its delegate class.

   @property (weak,nonatomic) id delegate;
   

3. Call this method in B View Controller on submit button or wherever required.

   if (self.delegate && [self.delegate respondsToSelector:@selector(didclickonSubmit:)])
   {
   [self.delegate didclickonSubmit:myarray];
   }
   

4. Create an object of B View Controller in View Controller A and assign A as delegate of B

   BViewController *b = [[BViewController alloc]init];
   b.delegate=self;
   

5. Implement required protocol methods of B in A and access the array

     -(void)didclickonSubmit:(NSArray*)array
     {              
        NSArray *myarray =[[NSMutableArray alloc]initWithArray:array];
     }
   

   now you can use myarray,as u like it..

hit link for sample project https://www.dropbox.com/s/002om8efpy6fout/passDataToPreviousContoller.zip Hope it helps..

****EDITED**** u can for sure assign tableViewController as delegate of UIView class.

@protocol BView 
-(void) didclickonSubmit:(NSArray*) selected_array;
@end
@interface BView : UIView
@property (weak,nonatomic) id delegate;
@end  

  in A i.e. your tableViewController create an object of B and assign your tableview controller as delegate of B .


BView *b=[[BView alloc]init];                                                                                            
b.delegate=self;

Happy Coding..:)