CODEWITHSUNDEEP
objective-cswiftbridging-header
Nicoara Talpes
Nicoara Talpes

Reputation: 720

Swift “use of undeclared type” for Objective-C library

I want to use the Objective-C library https://github.com/ameingast/cocoaimagehashing in a Swift project. I installed it with Cocoapods. I cannot use it, it throws the following errors when I build: “use of undeclared type” or "Use of unresolved identifier".

It is surprising that when I write OSImageHashingProvider and click on it, it jumps in the .h file it is defined.

I added a bridging header in the project, but I don’t have reasons to believe it is active.

I added it in Build Settings -> Swift Compiler - General / Objective C Brigding Header.

Build Settings -> Other Linker Flags has -ObjC. and -l “CocoaImageHashing”.

My pod is :

target 'Projectname' do
    pod 'CocoaImageHashing', :git => 'https://github.com/ameingast/cocoaimagehashing.git'
end

I don’t use use_frameworks! because it throws an error at build.

What is the solution?

Upvotes: 1

Views: 2323

Answers (1)

Nicoara Talpes
Nicoara Talpes

Reputation: 720

The problem was that Cocoapods does not install correctly this specific library.

At Target level, in Build Settings -> Search Paths -> Header Search Paths: there is a path generated by Cocoapods that does not correspond to any actual folder structure: "${PODS_ROOT}/Headers/Public/CocoaImageHashing" when the /Headers/Public structure does not exist. I removed that and remained with ${PODS_ROOT}/CocoaImageHashing , corresponding to the folder Projectname/Pods/Pods-Projectname.debug.xcconfig and now the library was seen.

Upvotes: 2

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