1.登录阿里Icon,随便找一个Icon加入购物车,

2.新建项目,添加Icon到新项目,

3.下载压缩包

4.flutter文件配置

fonts:
  - family: iconfont
    fonts:
      - asset: assets/icons/iconfont.ttf

5.引用

floatingActionButton: FloatingActionButton(
  onPressed: _incrementCounter,
  tooltip: 'Increment',
  child: Icon(
    IconData(0xe600, fontFamily: 'iconfont',),//&#改为0,Icon代码
    color: Colors.red,
    size: 40,
  ),
), 

6.不懂得可以在下方评论,我会及时回复