使用Android获取Firebase Realtime数据库中最后一个节点的数组元素 [英] Get the array elements of the last node in Firebase Realtime Database with Android

问题描述

如下图所示，我有一个名为"fridge"的数据库表"，它有一个名为"food"的子级. food是一个可以包含一个或多个元素的数组. 我想访问最后一个节点并获取食物元素并将其添加到列表中，但是我不知道该怎么做.

As shown in the image below, I have a database "table" called fridge that has a child called food. food is an array that can contain one or more elements. I want to access the last node and fetch the food elements and add them in a list, but I couldn't figure out how to do it.

谢谢您的帮助

推荐答案

您可以按照

You could follow the docs and use the limitToLast() method. Keys in firebase are ordered alphabetically.

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