我只写了一段代码,但出现“预期类型@line - (void)backButtonTapped:(TopBarViewController *) topBarViewController;
这有什么问题?
@protocol TopBarDelegate
- (void)backButtonTapped:(TopBarViewController *) topBarViewController;
@end
@interface TopBarViewController : UIViewController
{
}
@property (assign, nonatomic) id <TopBarDelegate> delegate;
-(void) backButtonPressed:(id)sender;
-(void) menuButtonPressed:(id)sender;
@end