Error in compiled application, constant property can't be found

I compiled a standalone executable using the Application Compiler but get an error when starting it because of 'Unable to resolve the name TestHelperClass.TestString'. Matlab then throws this error: MATLAB:undefinedVarOrClass. The TestHelperClass looks like this:

classdef TestHelperClass
    properties (Constant)
        TestString = "test"
    end
end

When using this way of getting predefined strings in MATLAB it works fine but not in compiled executables. Using get-functions which return the same strings results in the exact same error so sadly this doesn't work.

Is there a workaround for this error?

[dpb]

Did the compiler include the m-file containing the class definition in the required files?

[Simeon]

Yes it did, tried it with a different one which I added manually but still doesn’t work.

Answer 1

[Walter Roberson]

You need to create an object of class TestHelperClass and access the TestString property of that object.

Unfortunately it is not possible to subclass string class in order to hypthetically create an enumeration of type string.

[Simeon]

I added a basic constructor like this:

methods
  function obj = TestHelperClass()

  end
end

But now I get this error 'MATLAB:scriptNotAFunction' when calling it like this:

testHelpObj = TestHelperClass;

And also for this:

testHelpObj = TestHelperClass();

[Walter Roberson]

file TestHelperClass.m

classdef TestHelperClass
    properties (Constant)
        TestString = "test";
    end
    methods
        function obj = TestHelperClass()
        end
    end
end

together with separate

testHelpObj = TestHelperClass;
testHelpObj.TestString

However, you do not need the constructor in this particular case. It works to use file TestHelperClass.m

classdef TestHelperClass
    properties (Constant)
        TestString = "test";
    end
end

The seperate assignment to testHelpObj must not be part of TestHelperClass.m