ios - 导航栏的自定义后退按钮

Question

我做了一个类UINavigationBar如下:

UINavigationBar (UINavBar_Category)

我想使用它创建自定义后退按钮。

我可以通过下面的代码设置图片:

[[UIBarButtonItem appearance] setBackButtonBackgroundImage:[UIImage imageNamed:@"btn_back.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

问题无法更改后退按钮的标题。

我的尝试

 - (void)didMoveToSuperview
{
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:lang(@"btnBack") style:UIBarButtonItemStylePlain target:nil action:nil];
    self.topItem.backBarButtonItem=backButton;
}

帮我解决这个问题!

提前致谢

Answer 1

尝试使用此代码。这里首先创建一个按钮，设置其标题和图像，然后将其设置为导航 Controller 的左栏按钮项。

UIButton *backBarButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 29)];

[backBarButton setTitle:@"  Log Out" forState:UIControlStateNormal];
                [backBarButton setImage:[UIImage 
imageNamed:@"leftarrow_ipad.png"] forState:UIControlStateNormal];

[backBarButton addTarget:self action:@selector(backAction:) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *backBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backBarButton];

self.navigationItem.leftBarButtonItem = backBarButtonItem;