在Objective-C中连接委托类

@protocol MyDelegateProtocol <NSObject>
- (void)didTapButton:(UIButton *)button;
@end

@property (nonatomic, weak) id<MyDelegateProtocol> delegate;

- (IBAction)buttonTapped:(UIButton *)sender {
    if ([self.delegate respondsToSelector:@selector(didTapButton:)]) {
        [self.delegate didTapButton:sender];
    }
}

@interface MyViewController () <MyDelegateProtocol>
@end

@implementation MyViewController

- (void)didTapButton:(UIButton *)button {
    // 在这里处理按钮点击事件
}

@end

MyDelegateClass *delegateClass = [[MyDelegateClass alloc] init];
delegateClass.delegate = self;