Flutter笔记27：Icon图标

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Icon组件',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Icon组件'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              //普通图标
              Icon(
                Icons.favorite,
                size: 30.0,
                color: Colors.red,
              ),
              //图片图标
              ImageIcon(
                AssetImage('assets/images/digg.png'),
                //这里的颜色会智能修改png图片所呈现的颜色，不设置color，则png是什么颜色，图标就是什么颜色
                color: Colors.blue,
                size: 48.0,
              ),
              //图标按钮
              IconButton(icon: Icon(Icons.print), onPressed: () => print('点击')),
            ],
          ),
        ),
      ),
    );
  }
}