问题
I'm implementing a class but I'm getting this error:
Use of undeclared type 'myProtocol'
Here is my code:
class LocalContactService: myProtocol{
Any of you knows why I'm getting this error?
回答1:
i had the same error .in my case i found accidentally that i added my swift files into "copy bundle resource" in "build phase" i removed all swift file except assets then everything worked fine.
回答2:
Perhaps you've never defined myProtocol. Or if you have, maybe it's out of scope in the LocalContactService class
回答3:
the issue is caused when the classes in question do not belong to the same targets, usually the test target is missing. Just make sure the following check boxes are ticked. you can refer to original answer: https://stackoverflow.com/a/30737191/3992606
回答4:
Go to your myProtocol class, and on the right side (If you are using XCode), click the Tests of your class. This is what I mean.
"Use of undeclared type" in Swift, even though type is internal, and exists in same module
回答5:
I got this error when someone pushed changes that they made to the project.pbxproj file.
Select the file hit delete and choose the option to Remove Reference
Add the file back to the project, clean (cmd + shift + k), and rebuild
回答6:
I my case I had to clean the build folder, close the project, run pod install, and then the issue disappeared.
来源：https://stackoverflow.com/questions/38515522/swift-use-of-undeclared-type