Delegate不是调用方法

Question

So i have a question . Can someone Tell me the Problem with this line of code for calling(protocol) a Method

 [self.delegate poplogin];

poplogin is method name , its not working for some reason. its not calling the method poplogin

for reference :

@property(nonatomic,retain) id<loginAuthDelegate> delegate;

So let me Explain the Case

so lets say i have a Class abc.h

@protocol loginAuthDelegate <NSObject>
-(void)poplogin;
@end

After interface

@property(nonatomic,retain) id<loginAuthDelegate> delegate;

in .m i am just calling the Delegate and @synthesize it
[self.delegate poplogin];

not i have another files
let say def.h
i am importing the Class abc.h
@interface def : UIViewController<loginAuthDelegate>



def.m
-(void)poplogin
{
NSLog(@"Delegate doesn't respond to here");
vmpaSecureLogin *ivc = [[vmpaSecureLogin alloc] init];
ivc.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:ivc animated:YES];
}

Answer 1

This is probably because self.delegate is nil .

You probably forgot to affect your object's delegate to some other object in which you implemented the delegate methods, like your ViewController or something.