自定义字体在 iOS 8 中不起作用

问题描述

我的项目中包含一个自定义字体，在我使用 iOS 8 作为基础 SDK 将我的 Xcode 升级到版本 6 之前，它运行得非常好.现在，如果我在 iOS 8 模拟器或设备上运行该应用程序，自定义字体不再有效，但它仍然适用于我的 iOS 7 设备.有什么建议吗?

I have a custom font included in my project, which worked perfectly fine until I upgraded my Xcode to version 6 with iOS 8 as the base SDK. Now the custom font no longer works if I run the app on iOS 8 simulator or devices, but it still works in my iOS 7 devices. Any suggestions?

推荐答案

我找到了缺失"字体的原因.实际上字体仍然存在，但是从 iOS 7 到 iOS 8，字体名称发生了微妙但突然的变化:在 iOS 7 中，它被称为，例如Custom_Font-Style"，但现在在 iOS 8 中它被称为Custom-Font-Style".请注意 Custom 和 Font 之间的下划线现在更改为破折号.幸运的是，字体系列名称保持不变，与自定义字体系列"相同，因此现在我不必硬编码字体名称，而是从字体系列中提取它，如下所示:

I found the cause of the "missing" fonts. In fact the font is still there, but from iOS 7 to iOS 8 the font name had a subtle but abrupt change: in iOS 7 it is called, e.g. "Custom_Font-Style", but now in iOS 8 it is called "Custom-Font-Style". Notice the underscore between Custom and Font now changes to dash. Fortunately the font family name remains the same, as "Custom Font Family", so now instead of hard-coding the font name I have to extract it out from the font family, like this:

static NSString *_myCustomFontName;

+ (NSString *)myCustomFontName
{
    if ( !_myCustomFontName )
    {
        NSArray *arr = [UIFont fontNamesForFamilyName:@"Custom Font Family"];
        // I know I only have one font in this family
        if ( [arr count] > 0 )
            _myCustomFontName = arr[0];
    }

   return _myCustomFontName;
}

我不确定字体文件如何呈现其信息，但现在我猜我的字体文件(自定义字体.ttf)只提供了一个字体系列名称自定义字体系列"，而iOS根据某些规则派生其字体名称，由于某种原因，从 iOS 7 更改为 iOS 8，所以之前我们有 Custom_Font-Style，现在我们有 Custom-Font-Style.

I'm not sure how a font file presents its information, but now I guess my font file (custom font.ttf) only provides a font family name "Custom Font Family", and iOS derives its font name from certain rule, which for some reason changed from iOS 7 to iOS 8, so before we had Custom_Font-Style, now we have Custom-Font-Style.

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