解决 flutter The instance member 'x' can't be accessed in an initializer

Dart不允许字段初始化器引用对象本身。在开始创建对象之前，字段必须被完全初始化。初始化器只能访问静态变量和顶层变量，不能访问对象本身的任何实例变量。

class Test {
  String initial = "this thing";
  String other = initial;//This leads to the same error that you have
}

解决: 将初始化赋值方法放置在构造函数或者initState中