Get class by name

问题

Can I get a class by its name? For example:

class Foo {

}

class Bar {

}

let x = "Foo"
classByString(x) // need to return Foo

I want to use metaprogramming to reduce code maintenance.

回答1:

You can use a NSClassFromString:

if let anyObj : AnyObject.Type = NSClassFromString("MyAppName.MySwiftClassFoo") {
   //call Foo
} else {
   //call Bar
}

来源：https://stackoverflow.com/questions/42081970/get-class-by-name