iOS设置默认后退按钮外观

Question

我想为导航栏的后退按钮设置默认行为，因此整个应用程序看起来都是一样的。我还想删除我已经想到的默认文本。

我尝试了以下但没有成功：

[[UINavigationBar appearance] setBackIndicatorImage:[UIImage imageNamed:@"icon_backarrow"]];

//set default back text to @""

Answer 1

您应该使用 UIBarButtonItem

UIImage *backButtonImage = [[UIImage imageNamed:@"icon_backarrow"]
                                resizableImageWithCapInsets:UIEdgeInsetsMake(4, 5, 4, 5)];

    // Back button nav bar items
    [[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonImage
                                                      forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonImage
                                                  forState:UIControlStateHighlighted barMetrics:UIBarMetricsDefault];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonImage
                                                  forState:UIControlStateSelected barMetrics:UIBarMetricsDefault];
[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(-2.0f, 1.0f)
                                                     forBarMetrics:UIBarMetricsDefault];