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微信小程序实战之仿android fragment可滑动底部导航栏(4)

底部3-5个选项的底部导航栏,目前在移动端上是主流布局之一,因此腾讯官方特地做了,可以通过设置,就可以做出了一个底部的导航栏。

相关教程:微信小程序教程系列之设置标题栏和导航栏(7)

但是通过设置的这个底部的导航栏,功能上比较固定,它必须要设置与它对应的一个页面,而且并不能滑动。

在业务上,有时候会比较限制,并不能完全满足所需。

又例如早前有人拿着UI稿问我,这种广告轮播图的样式,在小程序能不能实现呢?

我当时没有想了下,还不是很确定,因为小程序的轮播图的那几个小点点实在比较普通,样式单一。

因此特意写了一篇自定义轮播图的文章

链接:微信小程序实战之轮播图(3)

因此自定义就有这个必要性

下面介绍这个仿Android fragment可滑动的底部导航栏如何实现

项目最终效果图:

微信小程序实战之仿android fragment可滑动底部导航栏(4)

wxml:

<swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:{{winHeight - 51}}px" bindchange="bindChange"> 
 
 <!-- frag01 --> 
 <swiper-item> 
 <scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower"> 
 
 <!-- 列表 --> 
 <view class="themes-list"> 
 <view class="themes-list-box" wx:for="{{datalists}}"> 
  <view class="themes-list-main"> 
  <view class="themes-list-name">{{item}}</view> 
  </view> 
 </view> 
 </view> 
 </scroll-view> 
 </swiper-item> 
 
 <!-- grag02 --> 
 <swiper-item> 
 <scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower"> 
 
 <!-- 列表 --> 
 <view class="themes-list"> 
 <view class="themes-list-box" wx:for="{{reslists}}"> 
  <view class="themes-list-main"> 
  <view class="themes-list-name">{{item}}</view> 
  </view> 
 </view> 
 </view> 
 </scroll-view> 
 </swiper-item> 
 
 <!-- grag03 --> 
 <swiper-item> 
 <scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower"> 
 
 <!-- 列表 --> 
 <view class="themes-list"> 
 <view class="themes-list-box" wx:for="{{datalists}}"> 
  <view class="themes-list-main"> 
  <view class="themes-list-name">{{item}}</view> 
  </view> 
 </view> 
 </view> 
 </scroll-view> 
 </swiper-item> 
 
 <!-- grag02 --> 
 <swiper-item> 
 <scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower"> 
 
 <!-- 列表 --> 
 <view class="themes-list"> 
 <view class="themes-list-box" wx:for="{{reslists}}"> 
  <view class="themes-list-main"> 
  <view class="themes-list-name">{{item}}</view> 
  </view> 
 </view> 
 </view> 
 </scroll-view> 
 </swiper-item> 
</swiper> 
 
<!--tab_top--> 
<view class="swiper-tab"> 
 <view class="swiper-tab-list {{currentTab==0 " data-current="0" bindtap="swichNav"> 
 <view class="swiper-tab-img"><image class="img" src="/UploadFiles/2021-04-02/{{currentTab==0 ">

wxss:

/*swiper*/ 
.swiper-box { 
 display: block; 
 height: 100%; 
 width: 100%; 
 overflow: hidden; 
} 
.hot-box { 
 display: block; 
 height: 100%; 
 font-family: Helvetica; 
} 
/* list */ 
.themes-list { 
 background: #fff; 
 display: block; 
 margin-bottom: 20px; 
} 
.themes-list-box { 
 display: block; 
 position: relative; 
 padding: 16px 20px; 
 border-bottom: 1px solid #f2f2f2; 
} 
.themes-list-main { 
 margin-left: 1px; 
} 
.themes-list-name { 
 font-size: 14px; 
 color: #444; 
 height: 20px; 
 line-height: 20px; 
 overflow: hidden; 
} 
/*tab*/ 
.swiper-tab { 
 height: 50px; 
 background: #fff; 
 display: flex; 
 position: relative; 
 z-index: 2; 
 flex-direction: row; 
 justify-content: center; 
 align-items: center; 
 border-top: 1px solid #ccc; 
} 
.swiper-tab-list { 
 margin: 0 20px; 
 padding: 0 4px; 
 font-size: 28rpx; 
 font-family: Helvetica; 
} 
.active { 
 /*border-bottom: 1px solid #FFCC00;*/ 
 color: #FFCC00; 
} 
.swiper-tab-img { 
 text-align: center; 
} 
.img { 
 width:23px; 
 height: 23px; 
} 

js:

Page( { 
 data: { 
 winWidth: 0, 
 winHeight: 0, 
 currentTab: 0,  
 datalists : [ 
  "习近平主持中央财经领导小组第十五次会议", 
  "李克强打叉的“万里审批图”成历史", 
  "新疆自治区举行反恐维稳誓师大会", 
  "朝鲜代表团抵达马来西亚处理金正男遇害案", 
  "习近平主持中央财经领导小组第十五次会议", 
  "李克强打叉的“万里审批图”成历史", 
  "新疆自治区举行反恐维稳誓师大会", 
  "砸锅卖铁!索尼是在走向毁灭 还是在奔向新生?" 
 ], 
 reslists:["hello","thank you for your read","if u feel good","can u give me good?"], 
 iconlists:[ 
  {normal:"../../images/wp.png",focus:"../../images/wpselect.png"}, 
  {normal:"../../images/ss.png",focus:"../../images/ssselect.png"}, 
  {normal:"../../images/hc.png",focus:"../../images/hcselect.png"}, 
  {normal:"../../images/my.png",focus:"../../images/myselect.png"}, 
 ] 
 }, 
 onLoad: function( options ) { 
 var that = this; 
 //获取系统信息 
 wx.getSystemInfo( { 
  success: function( res ) { 
  that.setData( { 
   winWidth: res.windowWidth, 
   winHeight: res.windowHeight 
  }); 
  } 
 }); 
 }, 
 /** 
 * 滑动切换tab 
 */ 
 bindChange: function( e ) { 
 var that = this; 
 that.setData( { currentTab: e.detail.current }); 
 }, 
 /** 
 * 点击切换tab 
 */ 
 swichNav: function( e ) { 
 console.log(e) 
 var that = this; 
 if( this.data.currentTab === e.currentTarget.dataset.current ) { 
  //点击的是同一个,则不操作 
  return false; 
 } else { 
  that.setData( { 
  currentTab: e.currentTarget.dataset.current 
  }) 
 } 
 
 } 
}) 

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。