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我想從子類發送數據到父類。實現我的自定義授權後,我收到此錯誤:從子類到父類的自定義委派(subview-superview)
Cannot find protocol declaration for 'SLBPostViewControllerDelegate'
這裏是我的代碼:
child.h
@protocol SLBPostViewControllerDelegate <NSObject>
- (void)dataToBeUploaded:(PFFile *)data;
@end
@interface
@property (weak, nonatomic) id <SLBPostViewControllerDelegate> delegate;
@end
child.m
[self.delegate dataToBeUploaded:image];
parent.h
@interface SLBWallViewController : UIViewController <SLBPostViewControllerDelegate>
parent.m
- (void)dataToBeUploaded:(PFFile *)data{
NSLog(@"%@", data);
}
哪裏是我的錯誤?我該如何解決它?