在iOS 7中,UIBarButtonItems选定的颜色不会正确更改

Question

所以我在iOS 7中遇到了UIBarButtonItem外观的问题.有一个属性,我找不到任何文档,似乎设置了按下时导航栏按钮的不透明度,我不知道如何修改它.

[self.navigationController.navigationBar setTintColor:[UIColor whiteColor]];
[[UIBarButtonItem appearance] setTitleTextAttributes:@{UITextAttributeTextColor: [UIColor whiteColor]} forState:UIControlStateNormal];
[[UIBarButtonItem appearance] setTitleTextAttributes:@{UITextAttributeTextColor: [UIColor orangeColor]} forState:UIControlStateHighlighted];

对于此代码,我得到的结果如下所示.

我不确定这里发生了什么.第一个问题是我似乎无法得到箭头的色调(因为没有setTintColor:forState:方法).第二个问题是按下时这种可怕的不透明度/色调.谢谢!

Answer 1

// 自定义后栏按钮将此代码粘贴到 appdelegate 中

UIImage *buttonBack30 = [[UIImage imageNamed:@"button_back_textured_30"]
                         resizableImageWithCapInsets:UIEdgeInsetsMake(0, 13, 0, 5)];
UIImage *buttonBack24 = [[UIImage imageNamed:@"button_back_textured_24"]
                         resizableImageWithCapInsets:UIEdgeInsetsMake(0, 12, 0, 5)];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:buttonBack30
                                                  forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:buttonBack24
                                                  forState:UIControlStateNormal barMetrics:UIBarMetricsLandscapePhone];