Question

我可以执行操作，一般在所有视图上设置导航后退按钮图标。例如，如果我将代码放入App Delegate方法，那么它将用于所有控制器。

Answer 1

这是我在当前应用程序中使用的最终答案，希望它有用..

查看DidLoad方法..

UIButton *leftButton = [UIButton buttonWithType:UIButtonTypeCustom];
leftButton.frame = CGRectMake(0, 0, 40, 40);
[leftButton setImage:[UIImage imageNamed:@"Back"] forState:UIControlStateNormal];
[leftButton addTarget:self action:@selector(left_menu_click:) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:leftButton];

self.navigationItem.leftBarButtonItem = leftBarButtonItem;

添加此方法以导航popViewController ..

-(IBAction)left_menu_click:(id)sender{
[self.navigationController popViewControllerAnimated:YES];
}

Answer 2

您可以在整个应用程序中尝试使用正确的图像显示以下按钮。

[[UIBarButtonItem appearance] setBackButtonBackgroundImage:[UIImage imageNamed:@"back_button_bg"]
                                                      forState:UIControlStateNormal
                                                    barMetrics:UIBarMetricsDefault];

Answer 3

在didFinishLaunchingWithOptions class：

中的AppDelegate方法中添加以下代码

// Following line is for tint color that is optional, You can add if you wants to change color of back button
[[UIBarButtonItem appearance] setTintColor:[UIColor redColor]];

如果您想要更改背景图片，那么

// Change the appearance of back button
    UIImage *backButtonImage = [[UIImage imageNamed:@"button_back"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 13, 0, 6)];
    [[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonImage forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

Answer 4

您可以尝试这样的自定义按钮：

+ (UIBarButtonItem *)backButtonForTarget:(id)target
{
UIButton * btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn addTarget:target action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
[btn setFrame:CGRectMake(0, 0, 70, 44)];
[btn setImageEdgeInsets:UIEdgeInsetsMake(11, -10, 8, 35)];
[btn setImage:[UIImage imageNamed:@"topbar_back.png"] forState:UIControlStateNormal];

UIBarButtonItem *barbtnItem = [[UIBarButtonItem alloc] initWithCustomView:btn];
return barbtnItem;
}

将此按钮添加为leftBarButtonItem

self.navigationItem.leftBarButtonItem = [UtilityClass backButtonForTarget:self];

Answer 5

您应该像这样修改UINavigationBar：

let appearance = UINavigationBar.appearance()
appearance.backIndicatorImage = image
appearance.backIndicatorTransitionMaskImage = image

如果要删除默认标题，请添加：

navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)

查看推送到导航控制器的视图控制器。

您可以在Apple docs

中找到更多信息

Answer 6

只需使用外观（）找到解决方案

快速

    let backImage = UIImage(named: "back")
    UINavigationBar.appearance().backIndicatorImage = backImage
    UINavigationBar.appearance().backIndicatorTransitionMaskImage = backImage
    UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedString.Key.foregroundColor:
        UIColor.white], for: .normal)
    UIBarButtonItem.appearance().tintColor = UIColor.green

Answer 7

您可以尝试

  let backImage = UIImage(named: "icon")
  let backImageUIEdgeInsets = UIEdgeInsets(top: -4, left: -8, bottom: -2, right: 8)
  let backImageWithAlignmentRectInsets = backImage?.withAlignmentRectInsets(backImageUIEdgeInsets)
  appearance.setBackButtonBackgroundVerticalPositionAdjustment(-1.0, for: .default)
  appearance.setBackButtonBackgroundImage(backImageWithAlignmentRectInsets,
                                          for: .normal,
                                          barMetrics: .default)
  appearance.setTitleTextAttributes([NSAttributedString.Key.foregroundColor: UIColor.clear],
                                    for: .normal)
  appearance.setTitleTextAttributes([NSAttributedString.Key.foregroundColor: UIColor.clear],
                                    for: .highlighted)

如何在全局视图控制器中设置导航后退按钮图标？

7 个答案: