Xcode - 如何并排查看两个文件？
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Xcode - How to view two files side-by-side?
提问by stackoverflowuser2010
I'm an experienced Eclipse user and am moving over to Xcode (I have version 9 right now).
我是一名经验丰富的 Eclipse 用户，正在转向 Xcode（我现在有 9 版）。
In Xcode, how do I view two source code files side-by-side vertically(i.e. one file on the left, and another on the right)? In Eclipse, to get a split view window, it's a simple matter of dragging one tab from the left to the right. How do I do this in Xcode?
在 Xcode 中，如何垂直并排查看两个源代码文件（即左侧一个文件，右侧另一个文件）？在 Eclipse 中，要获得拆分视图窗口，只需将一个选项卡从左向右拖动即可。我如何在 Xcode 中执行此操作？
Here is what I mean in Eclipse:
这是我在 Eclipse 中的意思：
回答by Tamás Sengel
In Xcode, you should use the Assistantfor this.
在 Xcode 中，您应该为此使用助手。
Xcode 11 and above (thanks for the update, @Uthen!)
Xcode 11 及更高版本（感谢更新，@Uthen！）
Click on the Add Editor on Rightbutton in the top right corner of the editor:
单击编辑器右上角的Add Editor on Right按钮：
To add an editor to the bottominstead, hold down the Optionkey while pressing the button, it will change to Add Editor Below:
要将编辑器添加到底部，请在按下按钮的同时按住Option键，它将更改为“在下方添加编辑器”：
If you want to choose a different file to show, navigate to a different file using the folder buttons above the editor:
如果要选择不同的文件来显示，请使用编辑器上方的文件夹按钮导航到不同的文件：
Xcode 10 and earlier
Xcode 10 及更早版本
Simply click on the button in the top right corner with two overlapping circles to access it or navigate to View/Assistant Editor/Show Assistant editor(??^?).
只需单击右上角带有两个重叠圆圈的按钮即可访问它或导航到视图/助理编辑器/显示助理编辑器( ??^?)。
If you want to choose a different file to show, click on the button right to the navigation arrows in the right side of the screen and select an option from the context menu. Choose Manualto pick any file you want.
如果要选择不同的文件来显示，请单击屏幕右侧导航箭头右侧的按钮，然后从上下文菜单中选择一个选项。选择手动选择您想要的任何文件。
If you want to change the layout to horizontal/vertical, navigate to View/Assistant Editorand change the view. Here, you can also add and remove new assistant editorsif display more than two files at the same time.
如果要将布局更改为水平/垂直，请导航到“视图/助手编辑器”并更改视图。在这里，如果同时显示两个以上的文件，您还可以添加和删除新的助理编辑器。
回答by SafeFastExpressive
A much easier method is to option-click the file you want in the Xcode project view, and it will open in the assistant editor position (typically to the right of the current file). No more tedious searching around with the horrible navigation menu in the assistant!
一个更简单的方法是在 Xcode 项目视图中选择单击您想要的文件，它将在助手编辑器位置打开（通常在当前文件的右侧）。不再用助手中可怕的导航菜单进行繁琐的搜索！
