如何只为特定用户检索Firebase数据库? [英] How to retrieve firebase database for specific user only?

问题描述

我正在将Firebase数据库用于我的android应用程序.登录功能可用.应用程序中有一个书签/收藏夹选项.按下书签按钮后，数据将分别与用户ID一起保存.正是我想要的.但是问题是当我尝试在recycleview中检索保存的数据时，它们显示的是所有用户的数据，而不是已登录的用户.请帮助我.我在recycleview中使用cardview.

I am using Firebase Database for my android application. Login feature is available. There is a bookmark/favourite option in the app. After pressing the bookmark button the data are saving with the user id separately. Exactly what I want. But the problem is when I am trying to retrieve the saved data in recycleview they are showing all user's data instead of the user logged in. Please help me. I am using cardview in recycleview.

 mUserDatabase = FirebaseDatabase.getInstance().getReference("Bookmarks");
        mUserDatabase.keepSynced(true);

这是我的成语短语数据库

It is my Database for Idiom Phrase

这是用户通过按书签按钮添加的数据

And it is the data added by user by pressing bookmark button

推荐答案

您需要访问用户uid，以便仅显示该用户的数据:

You need to access the user uid, so only that user's data will be shown:

FirebaseUser user=FirebaseAuth.getInstance().getCurrentUser();
String userId=user.getUid();

//String.valueOf(int)
mUserDatabase = FirebaseDatabase.getInstance().getReference("Bookmarks").child(String.valueOf(10)).child(userId);

getUid()将检索当前登录用户的ID.

getUid() will retrieve the id of the current logged in user.

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