Selección desplegable del paquete del subprograma WeChat

<!--components/single-dropdown-select/index.wxml-->
<view class='ms-content-box'>
    <view class='ms-content' bindtap='selectToggle'>
        <view class='ms-text'>{
   
   {selectText}}</view>
         <view class="{
   
   {selectShow ? 'icon-up' : 'icon-down'}}"></view>
    </view>
    <view class='ms-options' wx:if="{
   
   {selectShow}}">
        <view wx:for="{
   
   {propArray}}" data-index="{
   
   {index}}" wx:key='index' class='ms-option' bindtap='setText'>{
   
   {item.text || item.value || item}}</view>
    </view>
</view>

/* components/single-dropdown-select/index.wxss */

.ms-content-box {
  width: 300rpx;
}

.ms-content {
  /* border: 1px solid #e2e2e2;
  background: white; */
  font-size: 25rpx;
  position: relative;
  height: 40px;
  line-height: 30px;
}

.ms-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0 40px 0 6px;
  font-size: 30rpx;
}

.ms-options {
  background: white;
  width: 100%;
  position: absolute;
  border: 1px solid #e2e2e2;
  border-top: none;
  box-sizing: border-box;
  z-index: 111111111;
  /* max-height: 120px; */
  overflow: auto;
}

.ms-option {
  height: 40px;
  line-height: 40px;
  border-top: 1px solid #e2e2e2;
  padding: 0 6px;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 25rpx;
}

.ms-item:first-child {
  border-top: none;
}

.icon-right,
.icon-down,
.icon-up {
  display: inline-block;
  padding-right: 13rpx;
  position: absolute;
  right: 20rpx;
  top: 10rpx;
}

.icon-right::after,
.icon-down::after,
.icon-up::after {
  content: "";
  display: inline-block;
  position: relative;
  bottom: 2rpx;
  margin-left: 10rpx;
  height: 10px;
  width: 10px;
  border: solid #bbb;
  border-width: 2px 2px 0 0;
}

.icon-right::after {
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}

.icon-down::after {
  bottom: 14rpx;
  -webkit-transform: rotate(135deg);
  transform: rotate(135deg);
}

.icon-up::after {
  bottom: 0rpx;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

//index.js
Component({
  /**
   * 组件的属性列表
   */
  properties: {
    propArray: {
      type: Array,
    }
  },
  /**
   * 组件的初始数据
   */
  data: {
    selectShow: false, //初始option不显示
    selectText: wx.getStorageSync('selectText') ? wx.getStorageSync('selectText') :'全部订单', //初始内容
  },
  lifetimes: {
    attached: function () {
      console.log(this.data.propArray);
    }
  },
  /**
   * 组件的方法列表
   */
  methods: {
    //option的显示与否
    selectToggle: function () {
      var nowShow = this.data.selectShow; //获取当前option显示的状态

      this.setData({
        selectShow: !nowShow
      })
    },
    //设置内容
    setText: function (e) {
      var nowData = this.properties.propArray; //当前option的数据是引入组件的页面传过来的，所以这里获取数据只有通过this.properties
      var nowIdx = e.target.dataset.index; //当前点击的索引
      var nowText = nowData[nowIdx].text || nowData[nowIdx].value || nowData[nowIdx]; //当前点击的内容
      //再次执行动画，注意这里一定，一定，一定是this.animation来使用动画
      this.setData({
        selectShow: false,
        selectText: nowText,
      })
      this.triggerEvent('select', nowData[nowIdx])
    }
  }
})

{
  "usingComponents": {},
  "component": true
}

Componente pasando por valor

  <view style="background-color: #ededed; position: fixed;top: 0;z-index: 11111111;width: 100%;">
    <single-dropdown-select prop-array='{
   
   {itemListArry}}' bind:select='select'></single-dropdown-select>
  </view>

en el archivo json

{
  "usingComponents": {
    "tabbar": "../../custom-tab-bar/index",
    "single-dropdown-select": "/components/single-dropdown-select/index"
  }
}

Transferencia de datos de archivos JS (esto necesita pasar valores de acuerdo a sus propias necesidades, aquí es solo una referencia)

      this.data.itemList.push({
        all: '全部订单' + '·' + res.data.data.orderTotalNum,
        finishedNum: '已完成' + '·' + res.data.data.finishedNum,
        unpaidNum: '待支付费用' + '·' + res.data.data.unpaidNum,
        signedNum: ' 待签署协议' + '·' + res.data.data.signedNum,
      })
      this.setData({
        itemListObj: this.data.itemList[0]
      })
      this.setData({
        itemList: Object.values(this.data.itemListObj),//只需要对象的值
      })
      console.log(this.data.itemList);
      if(this.data.itemList && this.data.itemList.length>0){
        wx.setStorageSync('selectText', this.data.itemList[0])//传值下拉框显示的初始值
      }
      let arryItem = []
      this.data.itemList.forEach((v, i) => {
        arryItem.push({
          'value': v,
          'id': i
        })
      })
      this.setData({
        itemListArry: arryItem,
        showOrderName: this.data.itemList[0]
      })

El efecto final (el estilo puede ser modificado por ti mismo)

 

Para el método de inserción de matriz en el applet, no se puede usar directamente. Necesita usar this.setData({}) para reasignar el valor para que tenga efecto

 Link de referencia:

Cómo usar el componente de cuadro desplegable del subprograma WeChat: se busca programador