Flutter 字符串列表：如何在 Text() 函数中添加字符串列表

Question

我正在为我的 Quizzler 应用构建问题列表，想逐一访问问题，但无法将我的 questions 列表添加到我的 Text 功能中app...那么我应该如何将我的字符串列表添加到 Text 以便将它们一一显示在屏幕上？

enter image description here

class QuizPage extends StatefulWidget {
  @override
  _QuizPageState createState() => _QuizPageState();
}

class _QuizPageState extends State<QuizPage> {
  List<Widget> scorekeeper = [];

  List<String> questions = [
    'You can lead a cow down stairs but not up stairs.',
    'Approximately one quarter of human bones are in the feet.',
    'A slug\'s blood is green.'
  ];

  int questionNum = 0;

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.spaceBetween,
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: <Widget>[
        const Expanded(
          flex: 3,
          child: Padding(
            padding: EdgeInsets.all(10.0),
            child: Center(
              child: Text(
                questions[questionNum],
                textAlign: TextAlign.center,
                style: TextStyle(
                  fontSize: 25.0,
                  color: Colors.white,
                ),
              ),

Answer 1

您可以这样使用 ListView.builder：

ListView.builder(
  itemCount: questions.length,
  itemBuilder: (_, i) {
    return Padding(
      padding: EdgeInsets.all(10.0),
      child: Center(
        child: Text(
          questions[i],
          textAlign: TextAlign.center,
          style: TextStyle(
            fontSize: 25.0,
            color: Colors.white, 
          ),
        )
      )
    );
  }
);

并删除关键字 const。

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