ios - How to convert a string with the name of a class to the class type itself?

Question

In order to store a class name in a log file I converted the description of a class type to a string:

let objectType: NSObject.Type = Object.self
let str = String(describing: objectType)

However, I do not succeed in back conversion of str to a variable of type NSObject.Type to use it in a generic method.

How could I do this?

Answer 1

You can get your class back from string, but you need to use your project's module name while getting class name. If you don't use your module name then it will return nil because the class name you have referenced earlier is not fully qualified by the module name. You should change the class name string to represent the fully qualified name of your class:

let myClassString = String(MyModule.MyViewController.self)
print(myClassString)
let myClass = NSClassFromString("MyModule.(myClassString)") as! MyViewController.Type
print(myClass)