UISearchBar自定义代码在iOS7中崩溃，适用于iOS6

问题描述

我有一个iOS应用程序，专为支持iOS5.1而设计，我在搜索栏中自定义取消按钮。

I have an iOS application, built to support iOS5.1, and I was customizing the cancel button inside search bars.

我正在使用的代码和那个直到iOS6.1如下：

The code I'm using and that works until iOS6.1 is the following:

id barButtonAppearanceInSearchBar =
    [UIBarButtonItem appearanceWhenContainedIn: [UISearchBar class], nil];
[barButtonAppearanceInSearchBar setTitle:
    [self localizedStringValueFor:@"Cancel"]];

不知何故第二行会导致错误的访问异常， barButtonAppearanceInSearchBar 似乎被解除分配。

Somehow the second line will cause a bad access exception, the barButtonAppearanceInSearchBar seems to be deallocated when I try to set the value for the button's text.

localizedStringForValue 是一个自定义方法，如果不存在转换，将返回带有所提供密钥或密钥本身的转换的String。

localizedStringForValue is a custom method that will return a String with the translation for the provided key or the key itself if not translation exists.

现在，当我在iOS7'模拟器上运行应用程序时该应用程序总是崩溃。一直试图找出我做错了但到目前为止没有运气。

Now when I run the app on iOS7' simulator the app always crashes. Been trying to figure out what I'm doing wrong but no luck so far.

推荐答案

setTitle 不是支持方法。仅支持标有 UI_APPEARANCE_SELECTOR 的属性。

您必须在创建时手动设置标题 UISearchBar 。

You will have to set the title manually when you create the UISearchBar.

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