作为UIBarButttonItem放置在导航栏上的UIButton在点击时不会触发方法

Question

我创建了一个自定义UIButton并将其放在导航控制器的右侧。但是当我点击它时，它不会触发 buttonTapped 方法和打印输出测试123 ，我做错了什么？

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    UIImage *btnImage = [[UIImage alloc] init];
    BOOL unlike = NO;

    if (unlike){
        btnImage = [UIImage imageNamed:@"ic_favorite_border_48pt.png"];
    }else{
        btnImage = [UIImage imageNamed:@"ic_favorite_48pt.png"];
    }

    UIButton *heart = [UIButton buttonWithType:UIButtonTypeCustom];

    CGRect listButtonFrame = heart.frame;
    listButtonFrame.size = btnImage.size;
    heart.frame = listButtonFrame;

    [heart setImage:btnImage forState:UIControlStateNormal];
    [heart addTarget:self.navigationController.parentViewController
              action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem *jobsButton = [[UIBarButtonItem alloc] initWithCustomView:heart];
    self.navigationItem.rightBarButtonItem = jobsButton;
}

-(void)buttonTapped:(UIButton*)heart{
    NSLog(@"Testing 123");
}

@end

Answer 1

[heart addTarget:self.navigationController.parentViewController
           action:@selector(buttonTapped:)
 forControlEvents:UIControlEventTouchUpInside];

可能需要

[heart addTarget:self
           action:@selector(buttonTapped:)
 forControlEvents:UIControlEventTouchUpInside];