在flutter中从Firebase检索特定的用户数据 [英] Retrieve specific user data from firebase in flutter

问题描述

集合名称是我要为特定用户检索数据的特定用户ID.我怎样才能做到这一点.这是我的数据库 1 的屏幕截图我尝试了这段代码，但是由于数组，它只返回第一个集合

the collection name is the specific user id i want to retrieve data for the specific user. how can i do that. this is the screen shot of my database 1 i tried this code but it return only the 1st collection because of the array

StreamBuilder(
       stream: Firestore.instance.collection("/userdata").snapshots(),
       builder: (context, snapshot) {
     gnickname = snapshot.data.documents[0]["Nickname"];
     gphotourl = snapshot.data.documents[0]["photoURL"];})    

推荐答案

要获取基于uid使用的特定记录，在您的情况下，以下代码:

To get a specific record based on the uid use, in your case, the following code:

var userData = Firestore.instance.collection("/userdata").document("uid").get();

userData 是一个 DocumentSnapshot ，因此请使用 userData.data 对象获取键/值对.

userData is a DocumentSnapshot so use userData.data object to get the key/value pairs.

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