如何以排序方式检索数据

Question

我想以升序从Firebase实时数据库中获取数据。

BirthdayPersons        //This is main node
-Lfk hfkfks   //This is sun node
dob: "01/10/2019"
name: "Random Name"
uid: "randomstring"
rem: 5   //Sort according to this

-Lafkjhf fksjfj
dob: "01/10/2019"
name: "Random Name"
uid: "randomstring"
rem: 5  

我有这种格式的Json树，我希望数据根据remaining升序排列>

这是我的数据库模型类

data class Databasemodel(val uid:String, val name:String, val dob:String,val rem:Int) {

constructor():this("",",","",0)
}

我想以升序从Firebase实时数据库中获取数据。 BirthdayPersons //这是主节点-Lfk hfkfks //这是sun节点dob：“ 01/10/2019”名称：“ Random Name” uid：“ ...

Answer 1

尝试使用：