uniapp微信小程序picker地区选择自定义数据

<picker @change="bindPickerChange" @columnchange="bindColumnchange" mode="multiSelector" :value="multiIndex" :range="[provinceList1,provinceList2,provinceList3]" :range-key="'regionName'">
	<view> {{Address}}	</view>
</picker>


data(){
	return{
		Address:"请选择地址",
		multiIndex:[0,0,0],
		provinceList1:[],
		provinceList2:[],
		provinceList3:[]
	}
},
methods：{	
			bindColumnchange(e){
				var ind = e.detail.value;	//当前选中的下标  e.detail.column当前是第几列
				var _this = this;
				if(e.detail.column == 0){		//当第一列选中数据发生变化时，更新第二列和第三列数据
					urlRequestWithToken('后台地址',{regionId:_this.provinceList1[ind].regionId},"POST",function(res){
						if(res.code == 200){
							_this.provinceList2 = res.data.regionList;
							urlRequestWithToken('后台地址',{regionId:_this.provinceList2[0].regionId},"POST",function(res){
								if(res.code == 200){									
									_this.provinceList3 = res.data.regionList;
								}
							})
						}
					})
				}else if(e.detail.column == 1){			//当第二列选中数据发生变化时，更新第三列数据
					urlRequestWithToken('后台地址',{regionId:_this.provinceList2[ind].regionId},"POST",function(res){
						if(res.code == 200){									
							_this.provinceList3 = res.data.regionList;
						}
					})
				}
			},
			bindPickerChange(e){
				this.Address = this.provinceList1[e.detail.value[0]].regionName+" "+ this.provinceList2[e.detail.value[1]].regionName+" "+this.provinceList3[e.detail.value[2]].regionName;
			},

}