Easisest解决方案:

关闭所有打开的项目。 Xcode >首选项>字体和颜色 确保按CMD+A选择所有可能的文本类型。然后从选择器中更改字体大小。

更新!看Xcode 9来拯救你! 现在你可以使用cmd +来增加Xcode 9的字体。 你花了5个主要版本才得到它，苹果!但迟到总比不到好。

我算出来了，不过不是很直观。

首先是一些痛点

When You try to change the font size directly using edit -> format -> font, nothing happens! - Not a good UX ... moreover why play dumb when you can tell user that they are using default or "System-owned" theme and they cannot change it? - Bad Design and more bad UX ... Why keep this option (Cmd t) alive, which by the way is most standard way to increase font size across most well behaved mac apps, if you do not want user to change the font this way? In Xcode preferences, when you try to change the font size by clicking on "fonts and colors", thats when XCode gives a pop-up saying what needs to be done. Also making a duplicate and then changing the fonts and colors is a lot of work rather than giving a button that says "Restore to Defaults" if Apple is so worried about the user messing up the default settings!

解决方案是-你需要复制主题，然后修改你刚刚制作的副本，并应用该副本-唷!

去XCode >首选项>字体& 颜色 双击字体条目以获得字体检查器窗口 选择您想增加/减少大小的所有字体条目 在字体检查器窗口中选择相同的字体(例如:All Fonts > Menlo > Regular > 14)

小心，因为没有撤销!

对于Xcode 4.1

仍然是一个巨大的痛苦。糟糕的UI设计(但我的心态似乎与那些制作100多个字符变量和方法名的软件工程师的心态不一样。我的抱怨够多了)

我将为当前版本修改以前的一篇文章。

Close any projects you have open in Xcode (Otherwise the Font window will be inaccessible while a project is open.) Go to XCode > Preferences > Fonts & Color From the 'Theme' box select the theme you want to modify (or select the theme you want to modify and click the "+" button at the bottom of the theme list to clone it first for backup, for there is no undo option) In the source editor box there is a list of types of text that you may set the font for: Plain text Comments Documentation Comments . . . Select any or all items from the source editor list and the name and size of the font for that particular text will show up in the 'Font' window below the 'Source Editor' window. (If you happen to skip highlighting one of these, you will be able to get to the Font Inspector and select new sizes, but will wonder why the changes you make are not being applied!) In the 'Font' window, click the small, almost hidden, and surely poorly design 'T' icon to the right of the font name and size. Voila! In only 14 keystrokes you are able to get the Font inspector window! Your existing font will be preselected in the font inspector. Whatever changes you make now will be applied to the text types you selected in the 'Source Editor' window. e.g. All Fonts > Menlo > Regular > 14 Close the windows you opened on this hunt for the holy grail.

祝贺你。你现在可以阅读你的代码了。 这难道不痛苦吗?

之前所有的答案都集中在可能发生的事情上:改变编辑器和调试区域的字体大小。但是如果你共享你的屏幕导航器(文件导航器等)仍然很小。您现在可以在设置>一般>导航器大小中更改三个预设大小。

这将使你的文件和文件夹在展示时更具可读性。

当在XCode中从[Preferences]更改字体时(在复制一个与你想要的颜色匹配的模板后)，你可以选择多个条目并一次更改字体。使用[shift]选择一个范围或[cmd]选择多个单独的条目(例如，您可以同时选择'comments'和'strings'，只更改它们的字体)。

史蒂夫