我不希望读者思考发问者的想法Dart中无法满足需要，因此我添加了一个答案。

I don't want readers to think what the questioner wants isn't possible in Dart, so I'm adding an answer.

如果名称可以作为字符串使用，则需要使用Mirrors来调用方法。例如：

You need to use Mirrors to call a method if you have its name available as a string. Here is an example:

import 'dart:mirrors';

class Foo {
  bar() => "bar";
}

void main() {
  var foo = new Foo();

  var mirror = reflect(foo);
  print(mirror.invoke(#bar, []).reflectee); // Prints 'bar'.
}