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

Your CameraSessionView instance will be released from memory as soon as viewDidLoad ends. You need to store it in a property in PhotosTableViewController so that it is retained.

Your delegate should also be defined as weak, e.g.

@property (nonatomic,weak) id< CameraSessionViewDelegate >delegado;

Then in your implementation of PhotosTableViewController, you'll need to implement the -(void)uploadPhotosFromCamera:(NSMutableArray*)photos; method.

Also as this method is defined as @optional, you should check if the delegate responds to it before calling it.

   if([self.delegado respondsToSelector:@selector(uploadPhotosFromCamera:]){
        [self.delegado uploadPhotosFromCamera:_images];
   }

This will prevent the app from crashing if the delegate method isn't implemented.