Flutter 如何在 Flutter Application(Android Studio Emulator) 中显示字符串

Question

我在 Flutter App 中显示字符串输出时遇到问题，我想像这样在列中显示字符串值：

I
want
to
split
this

但我得到了这个输出：

[I, want, to, split, this]

我不知道该怎么做，因为我还是编程新手，但我认为下面这段代码一定是原因：

void _splitWordInColumn(){
      setState(() {
        sentenceToWord.forEach((e) => print(e));
      });
      }

这是错误输出的 image 下面是我的完整代码：

 import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(

        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  List<String> sentenceToWord = 'I want to split this'.split(" ");
  
  void _splitWordInColumn(){
  setState(() {
    sentenceToWord.forEach((e) => print(e));
  });
  }

  @override
  Widget build(BuildContext context) {

    return Scaffold(
      appBar: AppBar(

        title: const Text('Flutter Demo HomePage'),
      ),
      body: Center(

        child: Column(

          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(sentenceToWord.toString()),
          ],
        ),
      ),
    );
  }
}

希望有人能帮我解决这个问题，谢谢。

Answer 1

试试这个：

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(

        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String sentenceToWord = 'I \nwant \nto \nsplit \nthis';

  @override
  Widget build(BuildContext context) {

    return Scaffold(
      appBar: AppBar(

        title: const Text('Flutter Demo HomePage'),
      ),
      body: Center(

        child: Column(

          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(sentenceToWord),
          ],
        ),
      ),
    );
  }
}

Answer 2

尝试将 map 运算符与 column 一起使用。

child: Column(
   mainAxisAlignment: MainAxisAlignment.center,
   children: sentenceToWord.map((e) => Text(e)).toList(),
),

Flutter 如何在 Flutter Application(Android Studio Emulator) 中显示字符串

Flutter how to display string in Flutter Application(Android Studio Emulator)

string

split

dart

flutter