objectivec delegates

delegate.md

notes taken from : https://www.youtube.com/watch?v=YVikeoR3gYg Communicating between two viewControllers

in the SecondViewController.m

  - (void)saveText {
    [self.delegate sendTextToViewController:@"name here"];
  }

in the SecondViewController.h

  @protocol CakeDelegate <NSObject>
    -(void)sendTextToViewControlller:(NSString *)string;
  @end
  @interface ...
  @property (nonatomic, weak) id<CakeDelegate>delegate;
  @end

in the HomeViewControlloer.h

  #import "SecondViewController.h"
  @interface HomeViewController : UIViewController <CakeDelegate>

in the HomeViewControlloer.m

-(void)sendTextToViewController:(NSString *)string {
  NSLog(string)
}