微信小程序之tabbar切卡

最近在研究小程序的时候，遇到了一个问题，就是tabbar切卡，在android上有fragment，在RN上也有提供一个第三方的组件来用，微信小程序，好像没有专门的一个组件来实现这个功能，度娘了大半天，虽然也有好多人实现过这样的功能，但是我发现要么是不符合我的需求，那么就是实现起来过于繁琐。于是我参考多个高手写的博客，实现出了一个符合自己需求的。先上代码。

先看js文件：

  1 const util = require('../../utils/util.js');
  2 
  3 Page({
  4     data: {
  5         navTab:["投资","理财"],
  6         /**
  7          * 页面配置
  8          */
  9         winWidth: 0,
 10         winHeight: 0,
 11 
 12         // tab切换
 13         currentTab: 0,
 14         arrayList:[1,2,3,4,5,6,6,7,6,3,2,1,8,9,6,0,4],
 15         modalHidden:true,
 16         content:"这是一个表情",
 17         imagesHeightList:[],
 18         imageList:[
 19             "../../images/image1.jpg",
 20             "../../images/image2.jpg",
 21             "../../images/image3.jpg",
 22         ],
 23         datalist:[
 24             "../../images/image1.jpg",
 25             "../../images/image2.jpg",
 26             "../../images/image3.jpg",
 27         ],
 28 
 29     },
 30 
 31     /** 
 32      * 页面初始化
 33      * options 为页面跳转所带来的参数
 34      */
 35     onLoad: function (options) {
 36         var that = this;
 37 
 38         /**
 39          * 获取系统信息
 40          */
 41         wx.getSystemInfo({
 42 
 43             success: function (res) {
 44                 that.setData({
 45                     winWidth: res.windowWidth,
 46                     winHeight: res.windowHeight
 47                 });
 48             }
 49 
 50         });
 51 
 52 
 53         
 54         
 55 
 56     },
 57     onReady: function () {
 58        
 59        
 60 
 61     },
 62 
 63 /**
 64  * 显示弹窗
 65  */
 66     modalShow:function(){
 67         var that = this;
 68         that.setData({
 69             modalHidden:false,
 70         });
 71 
 72     },
 73 
 74 
 75 /**
 76  * 点击取消，确认按钮
 77  */
 78 modalChange:function(){
 79     var that = this;
 80         that.setData({
 81             modalHidden:true,
 82         });
 83 },
 84 
 85 
 86 
 87 
 88     /**
 89      * 滑动切换tab
 90      */
 91     bindChange: function (e) {
 92 
 93         var that = this;
 94         that.setData({
 95              currentTab: e.detail.current 
 96              });
 97 
 98     },
 99     /**
100      * 点击tab切换
101      */
102     swichNav: function (e) {
103 console.log("--------");
104         var that = this;
105 
106         if (that.data.currentTab === e.target.dataset.idx) {
107             return false;
108         } else {
109             that.setData({
110                 currentTab: e.target.dataset.idx
111             })
112         }
113 
114 
115     },
116 })

css代码

  1 /**index.wxss**/  
  2 .swiper-tab{  
  3     width: 100%;  
  4     border-bottom: 0.5rpx solid #cccccc;  
  5     text-align: center;  
  6     line-height: 80rpx;}  
  7 
  8 
  9 
 10 .top-tab{
 11   width: 750rpx;
 12   height: 100rpx;
 13   background: #fff;
 14   color: #000;
 15   font-size: 28rpx;
 16   font-weight: bold;
 17   line-height: 100rpx;
 18   border-bottom: 4rpx solid #eee;
 19   margin: 0 20rpx 8rpx 0rpx;
 20   position: fixed;
 21   top: 0;
 22   z-index: 9999;
 23 }
 24 
 25 .shift{
 26   position:absolute;
 27   bottom: 1px;
 28   height: 3px;
 29   width: 20%;
 30   background: red;
 31 }
 32 
 33 .on{ 
 34     color: red;  
 35     border-bottom: 2rpx solid red ;
 36     }  
 37   
 38 .swiper-box{ 
 39     display: block; 
 40     height: 100%; 
 41     width: 100%; 
 42     overflow: hidden; 
 43     }  
 44     
 45 .swiper-box view{  
 46     text-align: center;  
 47 }  
 48 
 49 
 50 .swiper-tab{ 
 51     height: 30px; 
 52     line-height: 30px; 
 53     background: #FFF; 
 54     display: flex; 
 55     position: relative; 
 56     z-index: 2; 
 57     border-bottom: 1px solid #F4F4F4; 
 58     flex-direction:row; 
 59     justify-content:center; 
 60     align-items:center;
 61     }
 62     
 63 .swiper-tab-list{ 
 64     margin: 0 20px;  
 65     padding: 0 4px; 
 66     font-size: 28rpx; 
 67     font-family: Helvetica, Arial, "Hiragino Sans GB", "Source Han Sans CN", "PingFang SC", Roboto, "微软雅黑", "Heiti SC", "Microsoft Yahei", sans-serif }
 68 .on{ border-bottom: 1px solid #48C23D; color: #48C23D; }
 69 
 70 .swiper-box{
 71      display: block; 
 72      height: 100%; 
 73      width: 100%; 
 74      overflow: hidden; 
 75      }
 76 
 77 .hot-box{ display: block; height: 100%; font-family: Helvetica, Arial, "Hiragino Sans GB", "Source Han Sans CN", "PingFang SC", Roboto, "微软雅黑", "Heiti SC", "Microsoft Yahei", sans-serif }
 78 .hot-box-main{ display: block; overflow: hidden; margin-bottom: 20px; background: #FFF; }
 79 
 80 .hot-main{ height: 50px; background: url("../../static/001.jpg") #FFF no-repeat 0 50%; background-size: cover; padding: 30px 20px; position: relative; z-index: 1; }
 81 .hot-main::before{ position: absolute; top: 0; bottom: 0; left: 0; right: 0; content: ''; background-image: linear-gradient(180deg, rgba(0,0,0,0.05) 5%,rgba(0,0,0,0.85) 100%); }
 82 
 83 .hot-main-box{ position: relative; z-index: 2; }
 84 .hot-main-title{ color: #FFF; font-size: 34rpx;  }
 85 
 86 
 87 
 88 
 89 
 90 .list-box{ padding: 20px 20px 20px 40px; display: block; font-size: 30rpx; border-bottom: 1px solid #F6F6F6; position: relative;}
 91 .list-box::after{ display: block; content: ""; position: absolute; width: 6px; height: 6px; background: #ff6511; border-radius: 50%; top: 25px; left: 20px; }
 92 .list-box-title{ font-weight: 400; line-height: 42rpx; }
 93 .list-box-sub{ font-size: 24rpx; color: #666; padding-top: 6px; }
 94 
 95 .hot-box-more{ text-align: center; font-size: 22rpx; color: #999; margin-bottom: 30px; }
 96 .hot-box-more image{ width: 80px; height: 16px; display: block; margin: 0 auto;}
 97 
 98 
 99 
100 .swiper-boxs { height: 200px; 
101 background: #F2F2F2; 
102 }
103 .swiper-boxs-img { 
104     display: block; 
105     width: 100%; 
106     height: 200px; 
107     position: relative; 
108     }
109 .swiper-boxs-img::before{ 
110     position: absolute; 
111     top: 0; 
112     bottom: 0; 
113     left: 0; 
114     right: 0; 
115     content: '';
116      background-image: linear-gradient(180deg, rgba(0,0,0,0.05) 5%,rgba(0,0,0,0.5) 100%);
117      }
118 
119 /*理财 */
120 .themes-box{ 
121     display: block; 
122     }
123 .themes-box-top{ 
124     text-align: center;
125     padding-bottom: 16px;
126     padding-top: 16px; 
127     background: #F9F9F9; }
128 .themes-box-title{ 
129     font-size: 16px; 
130     font-weight: 500; 
131     display: block; }
132 .themes-box-subtitle{ 
133     font-size: 12px; 
134     color: #666; 
135     display: block; 
136     margin-top: 4px; 
137     }
138 
139 /* 投资列表 */
140 .themes-list{ 
141     background: #FFF; 
142     display: block; 
143     margin-bottom: 20px; 
144     }
145 .themes-list-box{ 
146     display: block; 
147     position: relative; 
148     padding: 16px 20px; 
149     border-bottom: 1px solid #F2F2F2;
150      }
151 .themes-list-thumbnail{ 
152     position: absolute; 
153     left: 20px; 
154     top: 16px; 
155     height: 40px;
156     width: 40px; 
157      }
158 .themes-list-img{ 
159     width: 40px;
160      height: 40px;
161       border-radius: 4px;
162        border: 1px solid #F2F2F2;
163        }
164 .themes-list-main{
165      margin-left: 50px;
166       }
167 .themes-list-name{
168      font-size: 14px; 
169      color: #444; 
170      height: 20px; 
171      line-height: 20px; 
172      overflow: hidden; 
173      }
174 .themes-list-description{ 
175     font-size: 12px; 
176     color: #999; 
177     height: 20px; 
178     line-height: 20px; 
179     overflow: hidden;
180      }
181 
182 
183 
184 
185 
186 
187      /*理财系列*/
188 
189 .WxMasonryView{
190   column-count:2;
191   column-gap: 2px;
192   width: 100%;
193 }
194 .WxMasonry{
195   width: 95%;
196   background: #fefefe;
197   border: 2px solid #fcfcfc;
198   box-shadow: 0px 2px 2px rgba(34, 25, 25, 0.4);
199   margin: 5px 2px 2px 2px;
200   padding: 1px;
201   padding-bottom: 5px;
202   transition: opacity .4s ease-in-out;
203   display: inline-block;
204 }
205 .WxMasonryImage{
206   width: 100% !important;
207   display: inline-block;
208 }
209 
210 
211 
212 .swiper-box{ 
213     display: block; 
214     height: 100%; 
215     width: 100%; 
216     overflow: hidden; 
217     }
218 
219 .hot-box{ 
220     display: block; 
221     height: 100%;
222      font-family: Helvetica, Arial, "Hiragino Sans GB", "Source Han Sans CN", "PingFang SC", Roboto, "微软雅黑", "Heiti SC", "Microsoft Yahei", sans-serif
223       }
224 .hot-box-main{ 
225     display: block;
226      overflow: hidden;
227       margin-bottom: 20px;
228        background: #FFF; 
229        }
230 
231 
232 .hot-main::before{ position: absolute; top: 0; bottom: 0; left: 0; right: 0; content: ''; background-image: linear-gradient(180deg, rgba(0,0,0,0.05) 5%,rgba(0,0,0,0.85) 100%); }
233 
234 
235 .hot-box-top{ padding: 20px; border-bottom: 1px solid #F6F6F6; text-align: center; }
236 .hot-box-title{ font-size: 32rpx; height: 30px; line-height: 32px; font-weight: 400; color: #444; padding: 5px 10px; border: 1px solid #444; }
237 
238 .list-box{ 
239   padding: 0; 
240   display: inline-block; 
241   font-size: 30rpx;
242   border-bottom: 1px solid #F6F6F6; 
243 }
244 .list-box-title{ font-weight: 300; line-height: 42rpx; }

在看看html上面的代码

  1 <view class="swiper-tab">
  2     
  3 <view class="swiper-tab-list flex-item {{currentTab==idx ? 'on' : ''}}" wx:for="{{navTab}}" wx:for-index="idx" wx:for-item="itemName" data-idx="{{idx}}" bindtap="swichNav">
  4     {{itemName}}
  5   </view>
  6 </view>
  7 
  8 <swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:{{winHeight - 31}}px" bindchange="bindChange">
  9     
 10     <!-- 投资页面 -->
 11     <swiper-item>
 12         
 13         <scroll-view class="hot-box" scroll-y="true"                         upper-threshold="50" 
 14                     lower-threshold="100"   
 15                     bindscrolltolower="scrolltolower">
 16 
 17 
 18 <view class="themes-list">
 19 
 20                 <view class="themes-list-box" wx:for="{{arrayList}}">
 21                     <!--<navigator url="../themes/themes?id={{item.id}}">-->
 22                         <view class="themes-list-thumbnail">
 23                             <!--<image class="themes-list-img" src="{{item.thumbnail}}" />-->
 24                         </view>
 25                         <view class="themes-list-main" bindtap="modalShow">
 26                             <view class="themes-list-name">
 27                             <text>皇家林</text>
 28                             </view>
 29                             <view class="themes-list-description">
 30                             <text>是帅哥</text>
 31                             </view>
 32                         </view>
 33                     
 34                     <!--</navigator>-->
 35                     <modal title="标题" confirm-text="确认" cancel-text="取消" hidden="{{modalHidden}}" bindconfirm="modalChange" bindcancel="modalChange">
 36     确定要进入详情页面吗。
 37 </modal>
 38                 </view>
 39 
 40             </view>
 41         </scroll-view>
 42 </swiper-item>
 43 
 44 
 45 
 46 
 47     <!-- 理财页面 -->
 48     <swiper-item>
 49         <scroll-view class="hot-box" scroll-y="true" upper-threshold="50" 
 50                     lower-threshold="100" bindscrolltolower="scrolltolower">
 51 <text>理财页面</text>
 52 
 53 
 54 
 55 
 56 
 57 
 58 <swiper class="swiper-box" duration="300" style="height:{{winHeight - 31}}px" bindchange="bindChange">
 59 
 60     <swiper-item>
 61         <scroll-view class="hot-box" scroll-y="true" upper-threshold="50" 
 62                     lower-threshold="100" bindscrolltolower="scrolltolower">
 63 
 64             <view class="hot-box-main WxMasonryView" >
 65                 <block wx:for="{{datalist}}" wx:for-item="item" wx:for-index="i" wx:key="">
 66                    
 67                     
 68                     <view class="WxMasonry" wx:for="{{imageList}}" wx:for-index="j" wx:for-item="items" wx:key="">
 69                         
 70                             <image class="WxMasonryImage" id="{{i*10+j}}" style="width:{{imagesHeightList[i*10+j].width}}px;height:{{imagesHeightList[i*10+j].height}}px"  bindload="WxMasonryImageLoad" src="../../images/imagebiaoqing.jpg"/>
 71                             <view class="list-box-title">
 72                            <text>{{content}}</text> 
 73                             </view>
 74                         
 75                     </view>
 76                 </block>
 77             </view>
 78         </scroll-view>
 79     </swiper-item>
 80 </swiper>
 81 
 82 
 83 
 84 
 85 
 86 
 87 
 88 
 89 
 90 
 91 
 92 
 93 
 94 
 95 
 96 
 97             
 98             
 99 
100           
101 
102 
103 
104 
105         </scroll-view>
106     </swiper-item>
107 
108 </swiper>

最后我们看看效果图

这里如果全部代码复制，会发现往左边滑动的时候滑动不了，不要奇怪，那是因为在理财页面我想实现一个瀑布流，是一个半成品，存在bug，大家去掉那一部分就会正常了。

posted @ 2017-01-19 15:31  handsome黄  阅读(3757)  评论(0)  编辑  收藏  举报