Bridging Header issue - 'MyClass' is unavailable: cannot find Swift declaration for this class

Question

I have visited this links -

MyClass is unavailable: cannot find Swift declaration for this class - Release Build Only

Adding Linked or Embedded Swift Framework: 'MyClass' is unavailable: cannot find Swift declaration for this class

But none of the above links helped me to solve my problem.

I am developing an App using objective-c, in the app I am integrating ios-charts whose framework is developed in swift.I have merged the project as given in the README file. After integrating i have created a MyClass.swift file and then inherited the MyClass.swift file with a Class which is defined in charts.framework.But this is rising an error

'Class' is unavailable: cannot find Swift declaration for this class

Does anyone help me to solve this error? Any suggestions??

Did you manage to resolve the issue? – Błażej Dec 17 '15 at 22:45 — Błażej, Dec 17 '15 at 22:45

score 7 · Answer 1 · answered Dec 17 '15 at 08:31

7

This may be due to possibility that you are building for device and using for simulator and vice-versa. Please check this. This is very important thing. If you compiled or build framework for device, it will not work on simulator.

answered Dec 17 '15 at 08:31

Gopesh Gupta

707
8
19

This was my issue for external private framework I embedded – Alexander Tsepkov Dec 23 '15 at 16:00
so I should provide separate versions of framework for device and simulator? why it happens ? – pvllnspk May 04 '16 at 19:59
yes @pvllnspk. you need to create separate version. – Gopesh Gupta May 07 '16 at 05:09

score 3 · Answer 2 · answered Jan 10 '17 at 23:35

3

My fix for this problem was to change the deployment target of the framework from my device to “Generic iOS Device” and then rebuild the framework.

answered Jan 10 '17 at 23:35

Alan Kinnaman

877
12
20

score 1 · Answer 3 · answered Aug 31 '15 at 13:34

1

Try adding @objc infront of the MyClass declaration (i.e. @objc class MyClass {...})

answered Aug 31 '15 at 13:34

Yaser

408
2
6

score 0 · Answer 4 · answered Dec 30 '16 at 19:57

I encountered the same problem, i.e., when calling functions from 'MyClass' contained in 'MyFramework', it reports that 'MyClass' is unavailable. It turns out to be the iOS deployment targets of the framework and the application calling it are different. When I set both to be the same, the problem goes away.

score 0 · Answer 5 · answered Sep 03 '18 at 07:44

This error is just due to the framework's incompatibility for the build that you're trying to run it on..

Fix:-

1) Delete the framework from your project

2) Then:-

If you're running a simulator, go to your framework project and build the framework project selecting a simulator from the iOS Simulators list(any device from the simulators list) and then import the framework to the host project
If you're running a physical device, go to your framework project and build the framework project selecting "Generic iOS Device"/Physical Device(that's connected) and then import the framework to the host project

It should be working fine now. Hope this helps!

Bridging Header issue - 'MyClass' is unavailable: cannot find Swift declaration for this class

5 Answers5