1.WXML

       <picker mode="multiSelector" bindchange="bindMultiPickerChange" bindcolumnchange="bindMultiPickerColumnChange" value="{{multiIndex}}" range="{{multiArray}}">
          <view class="picker">
            {{multiArray[0][multiIndex[0]]}}{{multiArray[1][multiIndex[1]]}}{{multiArray[2][multiIndex[2]]}}
          
 
</view>
        </picker>

2.JS

//res.data.data.arrayList是後臺獲得的資料，
資料傳來的格式是見圖

Page({
    data: {
        multiIndex: [0, 0, 0],
        multiArray: [[],[],[]],
    },

　　onShow(){

res.data.data.arrayList.forEach(function (v,i) {
                    v.shopList.forEach(function (j, d) {
                        j.shopList.forEach(
 
function (t, p) {
                            that.data.shopId = ret.data
                            if (t.sysUserId == ret.data) {
                                that.data.multiIndex[0] = i
                                that.data.multiArray[1] = []
                                that.data.multiArray[
 
2] = []
                                that.setData({
                                    multiIndex: that.data.multiIndex,
                                    multiArray: that.data.multiArray
                                })
                                res.data.data.arrayList[that.data.multiIndex[0]].shopList.forEach(function (g, t) {
                                    that.data.multiArray[1].push(g.cityName)
                                    if (d == t) {
                                        j.shopList.forEach(function (l) {
                                            that.data.multiArray[2].push(l.districtName)
                                        })
                                    }
                                })
                                that.data.multiIndex[2] = p
                                that.data.multiIndex[1] = d
                                that.setData({
                                    multiIndex: that.data.multiIndex,
                                    multiArray: that.data.multiArray
                                })
                            }
                        })
                    })
                })
}