微信小程序中range-key多列选择器的使用示例

<picker mode="multiSelector" bindchange="bindMultiPickerChange2" bindcolumnchange="bindMultiPickerColumnChange2" value="{{multiIndex}}" range="{{objectMultiArray}}" range-key="{{'name'}}">
  <view class="picker">
   当前选择：{{objectMultiArray[0][multiIndex2[0]].name}}，{{objectMultiArray[1][multiIndex2[1]].name}}
  </view>
</picker>

Page({
 /**
  * 页面的初始数据
  */
 data: {
  objectMultiArray: [
   [
    {
     id: 0,
     name: '无脊柱动物'
    },
    {
     id: 1,
     name: '脊柱动物'
    }
   ], [
    {
     id: 0,
     name: '扁性动物'
    },
    {
     id: 1,
     name: '线形动物'
    },
    {
     id: 2,
     name: '环节动物'
    },
    {
     id: 3,
     name: '软体动物'
    },
    {
     id: 3,
     name: '节肢动物'
    }
   ]
  ],
  multiIndex2: [0, 0],
 },


 bindMultiPickerChange2: function (e) {
  console.log('picker发送选择改变，携带值为', e.detail.value)
  this.setData({
   multiIndex2: e.detail.value
  })
 },
 bindMultiPickerColumnChange2: function (e) {
  console.log('修改的列为', e.detail.column, '，值为', e.detail.value);
  var data = {
   objectMultiArray: this.data.objectMultiArray,
   multiIndex2: this.data.multiIndex2
  };
  data.multiIndex2[e.detail.column] = e.detail.value;
  switch (e.detail.column) {
   case 0:
    switch (data.multiIndex2[0]) {
     case 0:
      data.objectMultiArray[1] = [
       { id: 0, name: '扁性动物' },
       { id: 1, name: '线形动物' },
       { id: 2, name: '环节动物' },
       { id: 3, name: '软体动物' },
       { id: 3, name: '节肢动物' }
      ];
      // data.multiArray[2] = ['猪肉绦虫', '吸血虫'];
      break;
     case 1:
      data.objectMultiArray[1] = [
       { id: 0, name: '鱼' },
       { id: 1, name: '线形两栖动物' },
       { id: 2, name: '爬行动物' }
      ];
      break;
    }
    data.multiIndex2[1] = 0;
    // data.multiIndex[2] = 0;
    break;
  }
  this.setData(data);
 }


})