ios7 UINavigationBar setTitleTextAttributes崩溃应用程序 [英] ios7 UINavigationBar setTitleTextAttributes crashes app

问题描述

我想为所有导航栏设置一致的标题颜色：

I wanted to set a consistent title colors for all my navigation bars:

NSDictionary *titleAttributes = @{NSForegroundColorAttributeName:[UIColor whiteColor],
                                  NSFontAttributeName: MY_FONT_HERE};
[[UINavigationBar appearance] setTitleTextAttributes:titleAttributes];

此代码在iOS6中工作，但在ios7中工作。

This piece of code work in iOS6 but CRASH in ios7.

崩溃消息很奇怪：

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-                 [__NSCFConstantString pointSize]: unrecognized selector sent to instance 0x107c34'

推荐答案

我猜猜MY_FONT_HERE是一个字符串值，它应该是UIFont。不是将字符串传递给属性，而是使用 [UIFont fontWithName：MY_FONT_HERE] 初始化字体。

I'm guessing that MY_FONT_HERE is a string value, when it should be a UIFont. Instead of passing in the string to the attributes, initialize the font with [UIFont fontWithName:MY_FONT_HERE].

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