微信小程序实战之仿android fragment可滑动底部导航栏（4）

<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 
  }) 
 } 
 
 } 
}) 


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