代码
import 'package:flutter/material.dart';
class BottomNavigationWidget extends StatefulWidget {
_BottomNavigationWidgetState createState() => _BottomNavigationWidgetState();
}
class _BottomNavigationWidgetState extends State<BottomNavigationWidget> {
final _bottomNavColor = Colors.blue;
@override
Widget build(BuildContext context) {
return Scaffold(
bottomNavigationBar: BottomNavigationBar(
items: [
BottomNavigationBarItem(
icon: Icon(
Icons.home,
color: _bottomNavColor,
),
title: Text(
'home',
style: TextStyle(color: _bottomNavColor),
)
),
BottomNavigationBarItem(
icon: Icon(
Icons.email,
color: _bottomNavColor,
),
title: Text(
'Email',
style: TextStyle(color: _bottomNavColor),
)
),
BottomNavigationBarItem(
icon: Icon(
Icons.airplay,
color: _bottomNavColor,
),
title: Text(
'Airplay',
style: TextStyle(color: _bottomNavColor),
)
),
BottomNavigationBarItem(
icon: Icon(
Icons.scanner,
color: _bottomNavColor,
),
title: Text(
'Scnner',
style: TextStyle(color: _bottomNavColor),
)
)
],
),
);
}
}
总结：
//底部导航栏
final _变量名a = Color.bule;
BottomNavigationBarItem(
item:[
BottomNavigationBarItem(
icon:Icon(
Icons.xxx //系统样式
color：_变量名a
)
)
]
)
在当前目录下 例如 lib 新建一个dart文件 右键 file xxx.dart
引用其他文件 ，先import 文件 即可直接使用新文件下的class
继承Statefulwidge 动态继承 ？？？？和 statlessWidget的区别 没搞明白