Ios 如何更改导航栏上“后退”按钮的图像？

在故事板中，我使用“嵌入”创建了一个导航栏

我试图替换“后退”按钮的原始图像，如下所示

通过我的后退按钮图像，这是

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如何执行此操作？

在控制器视图加载方法中添加以下代码

UIImage *leftbuttonImage = [UIImage imageNamed:@"yourimagename"];
        UIButton *leftbutton = [UIButton buttonWithType:UIButtonTypeCustom];
        [leftbutton setImage:leftbuttonImage forState:UIControlStateNormal];
        leftbutton.frame = CGRectMake(0, 0, 35, 35);
        [leftbutton addTarget:self action:@selector(showLeftMenuPressed:) forControlEvents:UIControlEventTouchUpInside];
        UIBarButtonItem *customBarleftItem = [[UIBarButtonItem alloc] initWithCustomView:leftbutton];

        self.navigationItem.leftBarButtonItem = customBarleftItem;

并宣布戈巴克：

- (void)goback
{
    [self.navigationController popViewControllerAnimated:YES];
}

只需在viewdidLoad中调用此函数。 我在ma代码中使用了相同的函数。工作很好。。您可以使用它。

Swift版本：-

self.navigationController?.navigationBar.backIndicatorImage = UIImage(named: "HomeLeft@2x")
self.navigationController?.navigationBar.backIndicatorTransitionMaskImage = UIImage(named: "HomeLeft@2x")
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)

---

把这个放到viewDidLoad（）

嗨，谢谢你的回复。在“[leftbutton addTarget:self action:@selector（showLeftMenuPressed:）forControlEvents:UIControlEventTouchUpInside]；”行中，xcode表示未声明showLeftMenuPressed。我怎样才能摆脱它呢？很抱歉没提那件事。。将showLeftMenuPressed:method替换为要在单击“后退”按钮时调用的方法。请注意，如果替换“后退”按钮，则在iOS 7中返回的滑动手势将停止工作。以下是一些解决方案：

-(void)setUpNAvigationBackBarButton
{

    UIImage* image3 = [UIImage imageNamed:@"icon_back.png"];
    CGRect frameimg = CGRectMake(0, 0, image3.size.width, image3.size.height);
    UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg];
    [someButton setBackgroundImage:image3 forState:UIControlStateNormal];
    [someButton addTarget:self action:@selector(YourMethod which you wanna call on back button
         forControlEvents:UIControlEventTouchUpInside];


    UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton];
    [self.navigationItem setLeftBarButtonItem:mailbutton animated:YES];
}

self.navigationController?.navigationBar.backIndicatorImage = UIImage(named: "HomeLeft@2x")
self.navigationController?.navigationBar.backIndicatorTransitionMaskImage = UIImage(named: "HomeLeft@2x")
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)