如何在Flutter中从Firebase获取当前用户ID [英] How to get the current user id from Firebase in Flutter

问题描述

我正在尝试-

final Future<FirebaseUser> user = auth.currentUser();

但问题在于，不是通过 userid制作文档，而是通过的名称-

but the problem is that instead of making a document by the "userid" it is making a document by the name of -

Instance of 'Future<FirebaseUser>'

从字面上看，这是我现在的文档名称，但是我想专门使其成为用户标识。

This is literally my documents name right now, but I want to make it the userid specifically.

什么我该怎么办？

推荐答案

更新（2020.09.09）

0.18.0版之后

firebase_auth 0.18.0中很少进行重大更新。 FirebaseUser现在称为User，currentUser是getter，currentUser是同步的。

Few breaking updates were made in firebase_auth 0.18.0. FirebaseUser is now called User, currentUser is a getter, and currentUser is synchronous.

这使得获取uid的代码如下：

This makes the code for getting uid like this:

final FirebaseAuth auth = FirebaseAuth.instance;

void inputData() {
    final User user = auth.currentUser;
    final uid = user.uid;
    // here you write the codes to input the data into firestore
  }

在0.18.0之前的版本

uid是FirebaseUser对象的属性。由于auth.currentUser（）返回将来，因此必须等待才能获得如下用户对象：

uid is a property of FirebaseUser object. Since auth.currentUser() return a future, you have to await in order to get the user object like this:

final FirebaseAuth auth = FirebaseAuth.instance;

void inputData() async {
    final FirebaseUser user = await auth.currentUser();
    final uid = user.uid;
    // here you write the codes to input the data into firestore
  }

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