自定义导航栏后退按钮点击区域

Question

1. 我已经实现了自定义后退导航栏按钮。

2. 代码：

   -(UIBarButtonItem*) logicToAddBackButton {

   UIImageView *imageView=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"UiNavigationBack"]];
   
   UILabel *label=[[UILabel alloc] init];
   
   [label setTextColor:[UIColor colorWithRed:0.0 green:122.0/255.0 blue:1.0 alpha:1.0]];
   [label setText:@"Home"];
   [label sizeToFit];
   
   int space=6;
   label.frame=CGRectMake(imageView.frame.origin.x+imageView.frame.size.width+space, label.frame.origin.y, label.frame.size.width, label.frame.size.height);
   UIView *view=[[UIView alloc] initWithFrame:CGRectMake(0, 0, label.frame.size.width+imageView.frame.size.width+space, imageView.frame.size.height)];
   
   view.bounds=CGRectMake(view.bounds.origin.x+8, view.bounds.origin.y-1, view.bounds.size.width, view.bounds.size.height);
   [view addSubview:imageView];
   [view addSubview:label];
   
   UIButton *button=[[UIButton alloc] initWithFrame:view.frame];
   [button addTarget:self action:@selector(eventBack) forControlEvents:UIControlEventTouchUpInside];
   [view addSubview:button];
   
   [UIView animateWithDuration:0.33 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
       label.alpha = 0.0;
       CGRect orig=label.frame;
       label.frame=CGRectMake(label.frame.origin.x+25, label.frame.origin.y, label.frame.size.width, label.frame.size.height);
       label.alpha = 1.0;
       label.frame=orig;
   } completion:nil];
   
   UIBarButtonItem *backButton =[[UIBarButtonItem alloc] initWithCustomView:view];
   
   return backButton;
   

   }

   self.navigationItem.leftBarButtonItem = [self logicToAddBackButton];

3. 根据逻辑，这就是它的外观和工作方式。

4. 问题：如果我们点击箭头的前半部分，后退按钮没有响应。

5. 请就此提出建议。

Answer 1

尝试设置你的按钮：

button.contentEdgeInsets = UIEdgeInsetsMake(<#CGFloat top#>, <#CGFloat left#>, <#CGFloat bottom#>, <#CGFloat right#>)

Answer 2

我认为您在某处误算了框架。 你为什么不添加 UIButton 呢？它会容易得多，但没有标签动画。

  UIButton *button = [[UIButton alloc] init];
    [button addTarget:self action:@selector(eventBack:) forControlEvents:UIControlEventTouchUpInside];
    [button setTitle:@"Home" forState:UIControlStateNormal];
    [button setImage:[UIImage imageNamed:@"UiNavigationBack"] forState:UIControlStateNormal];
    [button setTitleColor:[UIColor colorWithRed:0.0 green:122.0/255.0 blue:1.0 alpha:1.0] forState:UIControlStateNormal];
    [button sizeToFit];
    UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:button];

    return backButton;