欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

Flutter实现底部导航栏

程序员文章站 2022-06-16 13:35:36
本文实例为大家分享了flutter实现底部导航栏的具体代码,供大家参考,具体内容如下 效果 实现 先将自动生成的main.dart里面的代码删除,...

本文实例为大家分享了flutter实现底部导航栏的具体代码,供大家参考,具体内容如下

效果

Flutter实现底部导航栏

Flutter实现底部导航栏

实现

先将自动生成的main.dart里面的代码删除,

import 'package:flutter/material.dart';
import 'package:flutter_guohe/pages/main.dart';
 
void main() {
 runapp(new guohe());
}

创建app.dart作为首页的页面文件

class guohe extends statefulwidget {
 @override
 guohestate createstate() => new guohestate();
}
 
class guohestate extends state<guohe> {
 @override
 widget build(buildcontext context) {
 
 }
}

创建today.dart、kb.dart、playground.dart三个页面文件作为tabview的填充文件,这里用playground.dart为例。

import 'package:flutter/material.dart';
 
class playground extends statefulwidget {
 @override
 playgroundstate createstate() => new playgroundstate();
}
 
class playgroundstate extends state<playground> {
 @override
 widget build(buildcontext context) {
 return new materialapp(
  home: new scaffold(
  appbar: new appbar(
   title: new text("操场"),
   backgroundcolor: color.fromargb(255, 119, 136, 213), //设置appbar背景颜色
   centertitle: true, //设置标题是否局中
  ),
  body: new center(
   child: new text('操场'),
  ),
  ),
 );
 }
}

app.dart的完整代码

/**
 * app的主入口文件
 */
 
import 'package:flutter/material.dart';
 
import 'package:flutter_guohe/pages/main/today.dart';
import 'package:flutter_guohe/pages/main/playground.dart';
import 'package:flutter_guohe/pages/main/kb.dart';
import 'package:flutter_guohe/pages/main/leftmenu.dart';
 
import 'package:flutter_guohe/common/eventbus.dart';
 
//果核的主界面
class guohe extends statefulwidget {
 @override
 guohestate createstate() => new guohestate();
}
 
class guohestate extends state<guohe> with singletickerproviderstatemixin {
 tabcontroller controller;
 
 @override
 void initstate() {
 controller = new tabcontroller(length: 3, vsync: this);
 }
 
 @override
 void dispose() {
 controller.dispose();
 super.dispose();
 }
 
 @override
 widget build(buildcontext context) {
 return new materialapp(
  home: new scaffold(
  drawer: new leftmenu(),
  body: new tabbarview(
   controller: controller,
   children: <widget>[
   new today(),
   new kb(),
   new playground(),
   ],
  ),
  bottomnavigationbar: new material(
   color: colors.white,
   child: new tabbar(
   controller: controller,
   labelcolor: colors.deeppurpleaccent,
   unselectedlabelcolor: colors.black26,
   tabs: <widget>[
    new tab(
    text: "今日",
    icon: new icon(icons.brightness_5),
    ),
    new tab(
    text: "课表",
    icon: new icon(icons.map),
    ),
    new tab(
    text: "操场",
    icon: new icon(icons.directions_run),
    ),
   ],
   ),
  ),
  ),
 );
 }
}

其中

labelcolor: colors.deeppurpleaccent,
unselectedlabelcolor: colors.black26,

第一个属性是控制标签颜色,这里我选了紫色,第二个属性是未选中标签时的颜色。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。