I am creating an application that would allow users to access data on their phones. Examples would be progress scores/test results.
I can upload the data to Firebase with an email address as the user link.
Is there a way that I can link this already loaded data to a user (with the same email address) once they have registered? Ideally using the email address in a rule to search up that data and use that reference point in the app.
Ideally I would like to pre-upload the users in bulk, but I know that Firebase only allows one user to be added at a time.
Any help would be appreciated.
After a user sign in to the app through the Firebase auth you can get its email through this call:
FirebaseAuth.getInstance().getCurrentUser().getEmail()
If you want to import data into your database, you should first make a json out of your data (list of users by email) and then use Firebase-Import to put it in your datastore.
Related
I have done phone authentication linked to my project but I am not pushing the data from android instead I have manually entered the user data in Firebase. And I want to retrieve the data from firebase using OTP verification and I just need to search the specific user data with phone number which I am entering while login. I want to show all fields to be displayed which are present in my firebase database into my android project.
I've tried many methods to receive the data but I am stuck... Please help me.
Database structure
Authentication panal
You need to logically bind your authenticated user and the data that you stored in your firebase. As per the image in your data base 'id' of the 'Users' are 1,2,.. like that. Instead of that you can use 'UID' of users as an an Id in your database. Go to your 'Authentication' section, you will see User UID against each registered user. Copy that and use as an ID while creating data in database. This will help you to get the data with reference like Users\. Hope this will solve your problem.
I am making an app, and in that app, users login and I am storing their information; however, I have noticed that I don't have a users' password information after they register. Is it a good idea to store users' password when they register through Firebase? And is there a point where I will need their passwords? I want to make sure before I proceed further. Thanks!
You do not do that.
Use the (awesome, amazing) Firebase authentication system.
Click right here:
on the left, to see all the users - click "Authentication".
You never see / you cannot see their passwords.
You don't handle or touch the passwords at all.
In the Android or iOS app, you get the userid - and that's it.
The answer by #PeterHaddad shows perfectly how to do that.
That's the first and most basic step in any Firebase ios/droid app.
In your data you'll have a "table" called probably "userData/" and that's where you keep all data about the user. (For example, you may store their address, real name, shoe size .. whatever is relevant in your app.)
Note - FBase is so amazing, your users can also connect with other methods (phone, etc). For your reference in the future, that is explained here
You don't need to store the password in the firebase database, after you authenticate the user using createUserWithEmailAndPassword the email and other info will be stored in the authentication console. So you do not need the password in the database, all you need is the userid to connect auth with database.
FirebaseUser user=FirebaseAuth.getInstance().getCurrentUser();
String useruid=user.getUid();
I am developing a Firebase chat app.
I have implemented Firebase email/password authentication. So, when user signups successfully, I have a code through which on every signup/register the app stores user details like name,email, etc in Firebase database under uid node.
Then, the user searches for a friend using a email id,
if the uid with that email id is present in the firebase database, the function returns true,
then, the app, adds that email id under
<FirebaseApp>
<users>
....users details...
<friends>
<userid>
<unique pushed id> : searched email // here the friend's email id is added
After adding the new friend,
I am using a recyclerview to show the friend list.
So, the app retrieves all the nodes under friends>> current user's uid>>
As my database structure describes I have only saved friends uid in friends database.
At first step the user will have only friends' email ids. Let say in List friendsList.
Then I use this friendsList to retrieve all the other details of friends like profile picture, name, contact and etc... which is saved under users node.
But using for each loop retrieving the other details of every friend, and then store in a array list, then paasing that arrayList to adapter and then displaying to recyclerview. is a very time consuming process.
Becuase, it can have other functions too. like converting Base64 image to bitmap etc.
So every time activity starts , following all above steps, will make a lengthy process.
other that this, I have another way, where I can save friends other's details too under friends node. like name, contact etc. at a point when a new friend added to the database.
But again another question arises.
yes, I can store friend's other details too... But what if the friend updates his profile picture, contact?
So, this procedure is not suitable in my case.
How can I create a whatsapp like friends list in my Firebase app, where I every user's friends list will be always updated with his/her friends details.
also, the will not go under any lengthy process.
The best approach is to save all the necessary details in the friends node as well.
You can just save the Opposite_Friends tag in each user, where just add all the uids in whose friends list user is present, So that whenever user updates any detail, you can update it in every users Friends node as well.
Is there a way to retrieve list of recent email account on the Firebase for iOS and Android?
Is it the right thing to get the UID/email and store it to my Realtime database node? Any thoughts that would be helpful to achieve this?
I know you can view and export your list of users from the Firebase dashboard on the Auth section (after export you can sort by join date using Excel).
If you wish to do it via code, I suggest storing the email and timestamp when I user signs up for your app. Then query the node with all the emails and order by timestamp.
I am currently making an Android app that allows Facebook sign-in and for each user, stores their email address (from Facebook) along with a couple integer variables in my database.
Upon login, I want my app to check if my database contains the email address of the logged on user. If it does, I proceed with the app functionality, if not, I create a new entry in my database for that user, with an email address and the associated integers.
How can I formulate a query or request that searches my database for a given email string? I am not very experienced with Firebase.
Using FirebaseAuth for your Facebook sign-in would give every user a unique id generated by Firebase.
This id is returned to you in the code when login is successful. You could then retrieve the user's email from the returned object.
Assuming you're using Firebase's real time database to store your info, you could check out their official docs here on how to use your DatabaseReference DataSnapshot to query the database