Xcode 7.3: import Module displayed with strikethrough

牧云@^-^@ 提交于 2020-01-08 16:22:29

问题


After upgrading Xcode to 7.3, I just found that some modules are stricken out while importing, like in this screenshot:

But after adding the module (so just pressing enter) everything is fine. What does that mean? The module here is written in Swift and works fine.


回答1:


This is a bug. We have fixed it in 218010af, which should be included in the Swift 2.2.1 release and is included in the 2016-04-12-a developer snapshot.




回答2:


The strikethrough occurs if you try to import a module that has already been imported by your file or module:

In this case, I have already imported Foundation (which implicitly imports CoreFoundation), so Xcode is telling you that there is no need to import either module again.




回答3:


It usually happens when a framework is already imported by any other framework you have already been imported.

For example, UIKit is already imported with Foundation so you don't need to import it manually.




回答4:


I changed the order of the imports

import Foundation
import UIKit
import LayerKit
import Atlas  < red line


import Foundation
import UIKit
import Atlas
import LayerKit

Some notes that may be causing it:

  • LayerKit importing Atlas even though LayerKit is the lower level API Atlas is the UI layer

  • Both were Cocoapod imports

  • Error appeared when I created an 2nd Schema for App Store/Enteprise releases and cleaned one and switch to the other.

  • Deleting Derived Data didnt clear it.
  • So tried rearranging them and red line disappeared


来源:https://stackoverflow.com/questions/36180575/xcode-7-3-import-module-displayed-with-strikethrough

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