一个大坑 填完了已经

问题描述： 自定义的tabber 切换 点击两次才会切换成功~~~

解决方案 存放在dva中处理

前期准备

dva 安装 已经安装跳过

https://www.jianshu.com/p/c2050b8ebb6f

Ⅰ- 壹 - 描述

必须开启
custom: true,//启动自定义tabBar

list 下文件index.config.ts下必须添加 “usingComponents”: {}

https://taro-docs.jd.com/taro/docs/custom-tabbar#1-%E5%8E%9F%E7%94%9F%E5%86%99%E6%B3%95

export default definePageConfig({
  navigationBarTitleText: '首页',
  "usingComponents": {}
})
1
2
3
4

Ⅱ - 贰 - 封装代码

文件目录

创建文件夹custom-tab-bar
放在与pages同级目录下（必须这样 微信规定的）

index.config.ts

export default {
  "component": true
}
1
2
3

index.tsx

import { useEffect } from 'react'
import Taro from '@tarojs/taro'
import { Tabbar, TabbarItem } from '@antmjs/vantui'
import './index.less'
import { useDispatch, useSelector } from 'react-redux';
const Index = () => {
  const dispatch = useDispatch();
  const tabberArr :any= useSelector<any>(
    (state) => state.customtabbar.tabberArr
  );
  return (
    <>
      <Tabbar active={tabberArr.selected} >
        {tabberArr.list.map((item, index) => {
          return (
            <TabbarItem key={index} icon={item.iconPath} onClick={() => {
              dispatch({
                type:'customtabbar/emitSelected',
                payload:index
              })
              Taro.switchTab({ url: item.pagePath })
            }}>{item.text}{tabberArr.selected}</TabbarItem>
          )
        })}
      </Tabbar>
    </>
  )
}
export default Index

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

model.ts

export default {
  namespace: 'customtabbar',
  state: {
    tabberArr: {
      selected: 0,
      color: '#000000',
      selectedColor: '#DC143C',
      list: [
        {
          id: 0,
          pagePath: '/pages/index/index',
          // selectedIconPath: '../images/tabbar_home_on.png',
          iconPath: 'home-o',
          text: '首页'
        },
        {
          id: 1,
          pagePath: '/pages/my/index',
          // selectedIconPath: '../images/tabbar_my_on.png',
          iconPath: 'friends-o',
          text: '个人中心'
        }
      ]
    }
  },
  effects: {},
  //方法 dispatch 触发
  reducers: {
    emitSelected(state, { payload }) {
      return { ...state, tabberArr:{ ...state.tabberArr, selected: payload } };
    },
  },
};
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33