在iOS 7中看不到后退按钮 [英] Back button is not visible in iOS 7

问题描述

我对iOS 7有一些奇怪的麻烦。我的应用程序中有一个 UINavigationBar ，它适用于iOS 6;

I have some weird trouble about iOS 7. I have an UINavigationBar in my app and it works perfect for iOS 6;

- IOS 6 -

然而，当我尝试在iOS 7上运行它时，我的后退按钮消失了。它在那里，仍在工作，可点击但不可见;

However, when i try to run it on iOS 7, my back button disappeared. It's there, still working and clickable but not visible;

- IOS 7 -

如何解决此问题？

推荐答案

设置 BackButtonBackgroundImage 通过 UIAppearance 目前在iOS 7中有一些奇怪的行为。这可能与更新的设计有关，它将rect-style按钮替换为backIndicatorImage（箭头）。

Setting BackButtonBackgroundImage via UIAppearance currently has some odd behavior in iOS 7. This is probably related to the updated design, which replaces the rect-style button with a backIndicatorImage (an arrow).

这留下了3个用于自定义后退按钮外观的选项：

This leaves 3 options for customizing the back button's appearance:

1. 通过设置<$来更改backIndicatorImage的颜色 UINavigationBar （或其中一个超类）的c $ c> tintColor 属性。

1. Change the color of the backIndicatorImage by setting the tintColor property on UINavigationBar (or one of its superclasses).

在 UINavigationBar backIndicatorImage 属性>到自定义图像。 （不要忘记设置 backIndicatorTransitionMaskImage ，否则它将无效）

Set the new backIndicatorImage property on UINavigationBar to a custom image. (don't forget to set the backIndicatorTransitionMaskImage as well or it won't work)

创建自定义 UIBarButtonItem 并手动将其指定为 UINavigationItem 的 leftBarButtonItem 。 （参见上面提到的答案 Mashhadi ）

Create a custom UIBarButtonItem and manually assign it as UINavigationItem's leftBarButtonItem. (See the answer mentioned above by Mashhadi)

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