LinearGradient 线性渐变效果

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      title: "LinearGradient线性渐变效果",
      home: LayoutDemo(),
    ),
  );
}

class LayoutDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("LinearGradient线性渐变效果"),
      ),
      body: Center(
        child: DecoratedBox(
          decoration: BoxDecoration(
//            线性渐变
            gradient: LinearGradient(
//              起始偏移量
              begin: FractionalOffset(0.5, 0.0),
//              结束偏移量
              end: FractionalOffset(1.0, 1.0),
//              渐变颜色数据集
              colors: <Color>[
                Colors.red,
                Colors.green,
                Colors.blue,
                Colors.grey,
              ],
            ),
          ),
          child: Container(
            width: 280.0,
            height: 280.0,
            child: Center(
              child: Text(
                "LinearGradient线性渐变效果",
                style: TextStyle(
                  color: Colors.black,
                  fontSize: 28.0,
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}