Question

我只是想制作一个向用户提供随机文本的应用程序。但我很困惑，我无法访问我的变量。我无法将随机数附加到 text 字词中。

这是我的变量：

    var text1 = 'Of cource do it!';
    var text2 = 'Do it.';
    var text3 = 'why don\'t you do it faster?';
    var text4 = 'I have no idea about it.';
    var text5 = 'it\'s better to don\'t do it.';
    var text6 = 'Don\'t do it.';
    var text7 = 'if I was you , I would not do it.';
    var text8 = 'Never do it.';

这是我生成随机数的方法：

    void ran(){
      numm = Random().nextInt(8)+1;
    }

这是我尝试用 text 字附加随机数的方法：

Text('$text$numm',style: TextStyle(color: Colors.white),)),

如何将 random number 与 text 混合使用？

Answer 1

 List<String> text = [
    'Of cource do it!',
    'Do it.',
    'why don\'t you do it faster?',
    'I have no idea about it.',
    'it\'s better to don\'t do it.',
    'Don\'t do it.',
    'if I was you , I would not do it.',
    'Never do it.'];
      
      int ran() {
        numm = Random().nextInt(8) + 1;
        return numm;
      }

然后像这样使用

Text(text[ran()],style: TextStyle(color: Colors.white),))

Answer 2

您可以将文本放入 List，并使用 numm 获取值：

List texts = [text1,text2,text3,text4,text5,text6,text7,text8];

var numm = Random().nextInt(texts.length);

Text(texts[numm],style: TextStyle(color: Colors.white))

Answer 3

试试这个

var text1 = 'Of cource do it!';
var text2 = 'Do it.';
var text3 = 'why don\'t you do it faster?';
var text4 = 'I have no idea about it.';
var text5 = 'it\'s better to don\'t do it.';
var text6 = 'Don\'t do it.';
var text7 = 'if I was you , I would not do it.';
var text8 = 'Never do it.';

List<String> list = [text1, text2, text3, text4, text5, text6, text7, text8];
final rand = Random().nextInt(7);
Text(list[rand], style: TextStyle(color: Colors.white),);

在颤振中使用随机变量

3 个答案: