如何在Flutter中创建对象实例的可迭代集合？

Question

I have created a list of myObject Type, When I add an object instance via list.add then passing the constructor for myObject , the first property I can reference, subsequent properties are null.

// my class and its constructor method

class Channel {
  final String channelName;
  final String channelDesc;
  final String channelEvent;
  final String channelThumbLink;

  const Channel(this.channelName, this.channelDesc, this.channelEvent,
      this.channelThumbLink);
}

// I construct a list of type<Channel>

final List<Channel> channelList = <Channel>[]
    ..add(Channel(
        'Funkycooking',
        'Welcome to the Funkycooking channel, we cook, you get funky',
        'Sizzling Salsa Saturday!',
        '1'))

// Referencing these elements from the list collection in any widget

Text('${channelList[0].channelName}'),
Text('${channelList[0].channelDesc}'),

Text('${channelList[0].channelName}') returns 'Funkycooking' as expected

Text('${channelList[0].channelDesc}') returns null, i would expect 'Welcome to the Funkycooking channel, we cook, you get funky'

Answer 1

抱歉，我错误地认为热重装可以正确反映我的对象编码更改，但不能，但是通过停止并重新启动应用程序，它的行为符合我的预期。