<picker mode="multiSelector" range='{{arrayObjMulti}}' range-key='id' 
bindchange='changeMulti' bindcolumnchange='columnchange'>
<view>{{showme}}</view>
</picker>

mode = multiSelector 這個是多列選擇器。

然後json資料的格式是雙列陣列。

arrayObjMulti:[
      [
        { id: "1001
 
", name: "1" },
        { id: "1002", name: "2" },
        { id: "1003", name: "3" },
        { id: "1004", name: "4" },
        { id: "1005", name: "5" }
      ],
      [
        { id: "1001", name: "1" },
        { id: "1002", name: "2" },
        { id: "1003", name: "3" },
        { id: "1004", name: "
 
4" },
        { id: "1005", name: "5" }
      ]
    ],

columnchange:function(e){
    //列印物件
    console.log(e.detail);
  },
  changeMulti:function(e){
    var indexs = e.detail.value;
    console.log(indexs.length);
    var arrayObjMulti = this.data.arrayObjMulti;
    console.log(arrayObjMulti);
    
 
for(var i = 0 ; i<indexs.length ; i ++){
      var indexTmp = indexs[i]; 
      console.log(indexTmp);
      console.log(arrayObjMulti[indexs]);
      var id = arrayObjMulti[i][indexTmp].id;
      var name = arrayObjMulti[i][indexTmp].name;
      console.log(id+" "+name)
    }
  }

我說的不清楚，只能除錯弄懂