flutter - "How to create two text widgets in a row widget"

Question

“我是flutter的初学者，我想在一行中显示两个文本。其中“hello”是第一个文本小部件，“world”是另一个文本小部件

我尝试用我的基本知识来做这件事，但我遇到了这些错误

Horizontal RenderFlex with multiple children has a null textDirection, so the layout order is undefined. 'package:flutter/src/rendering/flex.dart': Failed assertion: line 439 pos 18: 'textDirection != null'

    class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new Row(
      children: <Widget>[
        Text("hello",textDirection: TextDirection.rtl,),
        Text("world",textDirection: TextDirection.rtl,)
      ],
    );
  }
}

Answer 1

也许您想改用 RichText？

RichText(
  text: TextSpan(
    children: <TextSpan>[
      TextSpan(text: 'hello', style: TextStyle(color: Colors.red)),
      TextSpan(text: ' world', style: TextStyle(color: Colors.blue)),
    ],
  ),
)