Develop Reference

How to assign displayName?

I've registered an account in my Android application using Firebase and there are multiple textfields.
How can I assign particular textfield as displayName of user so that I can later access it using getDisplayName()?

To change a user's display name, you need to update the user profile:
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName("Jane Q. User")
.setPhotoUri(Uri.parse("https://example.com/jane-q-user/profile.jpg"))
.build();
user.updateProfile(profileUpdates)
.addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
Log.d(TAG, "User profile updated.");
}
}
});

How to get UserName from FirebaseUser using authentication Uid in android?

I registered a user by using createUserWithEmailAndPassword() and login using signInWithEmailAndPassword() methods. Now when I login a user I need to get the username, mobile, that are stored in the user node. I could get the UId for each user, by using this how it possible to get the mentioned information in android?

all you have to do is use UserProfileChangeRequest
mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if(task.isSuccessful()){
// Sign in success
FirebaseUser user = mAuth.getCurrentUser();
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName(mName).build();
user.updateProfile(profileUpdates).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
Log.d(TAG, "User profile updated.");
}
}
});
}
});
Then, to retrieve it, use this wherever required,
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
// Name, email address etc
String name = user.getDisplayName();
String email = user.getEmail();
}
or you can create your own custom node.!
String currentuser = FirebaseAuth.getInstance().getUid();
//save user node after successful signup.
mFirebaseInstance.getReference("user").child(scurrentuser ).setValue(parameters);
databaseReference = FirebaseDatabase.getInstance().getReference().child("user").child(currentuser );
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
for(DataSnapshot userSnapShot: dataSnapshot.getChildren()){
User user = userSnapShot.getValue(User.class);
}
}

Not Showing DisplayName firebase Android?

Everything worked but not showing name only.
My code is:
user = profAuth.getCurrentUser();
if (user != null) {
// Name, email address
String uid = user.getUid();
String name = user.getDisplayName();
String email = user.getEmail();
txtName.setText(name);
txtEmail.setText(email);
txtUserid.setText(uid);
}

That's because Firebase Auth doesn't prompt the user to provide a Display name when signing up with Email/Password. But you can do that manually. Prompt the user to type the display name he desires, and pass it to the setDisplayName() method bellow:
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName(desiredName)
.build();
user.updateProfile(profileUpdates)
.addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
Log.d(TAG, "User display name updated.");
}
}
});

updating displayname of user in firebase (android)

I am creating a project with firebase for login screen. I am trying to update the displayName of user with the code below but it is not updating the display name. Help me out
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName(name)
.build();
user.updateProfile(profileUpdates).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if(task.isSuccessful()){
Toast.makeText(VerifyUser.this,"Name updated successfully",Toast.LENGTH_LONG).show();
startActivity(new Intent(VerifyUser.this,MainActivity.class));
}else
Toast.makeText(VerifyUser.this,"Name update Failed",Toast.LENGTH_LONG).show();
}
});

You need to update the user profile right after a log-in or a verification of email and password.
I know I am late, but for posterity, for one to update a user attributes on firebase, they need to login first.
so something like :
mAuth.signInWithCredential(credential)
.addOnCompleteListener(LordRegister.this,
new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
//verification successful we will start the profile activity
FirebaseUser user = task.getResult().getUser();
String name = nameInput.getText().toString().trim();
//user.updateProfile()
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName(name)
.build();
user.updateProfile(profileUpdates).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if(task.isSuccessful()){
Intent intent = new Intent(LordRegister.this, LordHome.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}else
Toast.makeText(LordRegister.this,"Name update Failed, try again",Toast.LENGTH_LONG).show();
}
});
} else {
//verification unsuccessful.. display an error message
String message = "Somthing is wrong, we will fix it soon...";
if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
message = "Invalid code entered...";
}
Toast.makeText(LordRegister.this,message,Toast.LENGTH_SHORT).show();
}
}
});
}
Like above I'm using a user phoneNumber to sign-in or rather to verify a user first, then updating the name or any other attribute.

Create new user with Names , Username etc in firebase

I'm new android learner so its is difficult for me to do stuffs which I cannot find in the documentation. Here is my code for creating users
mAuth.createUserWithEmailAndPassword(email,password)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if(task.isSuccessful()){
//Successfully Registered
Toast.makeText(RegisterActivity.this, "Registration Successful", Toast.LENGTH_SHORT).show();
}else {
//Error occurred during registration
Toast.makeText(RegisterActivity.this, "Registration Unsuccessful", Toast.LENGTH_SHORT).show();
try {
throw task.getException();
} catch(FirebaseAuthWeakPasswordException e) {
editTextPassword.setError(e.getMessage());
editTextPassword.requestFocus();
}catch(FirebaseAuthUserCollisionException | FirebaseAuthInvalidCredentialsException e) {
editTextEmail.setError(e.getMessage());
editTextEmail.requestFocus();
} catch(Exception e) {
Log.e(RegisterActivity.class.getName(), e.getMessage());
}
}
progressDialog.dismiss();
}
});
This only takes two parameters(email and password) to create an user. To create user with more fields what approach should I take.
I have also added a FirebaseAuth.AuthStateListener() to check user login status. But when I'm calling firebaseAuth.getCurrentUser().getDisplayName() after successfully user login it returns null as usual.So how can I create user with Names so I can retrieve it with firebaseAuth.getCurrentUser().getDisplayName().

After the registration is successful,
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName("Jane Q. User")
.build();
EDIT: This code is a bit incomplete as profileUpdates is never accessed.
user.updateProfile(profileUpdates)
.addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
Log.d(TAG, "User profile updated.");
}
}
});
Then, to retrieve it, use this wherever required,
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
// Name, email address etc
String name = user.getDisplayName();
String email = user.getEmail();
}

To add a user with extra information such as User's name or other required information you should store these data using the Firebase real-time database under the unique user_id generated upon successful completion of email and password registration.
Get user input for name in registration form,
String name = mNameField.getText().toString().trim();
Add user's name in onComplete method :
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if(task.isSuccessful()){
String user_id = mAuth.getCurrentUser().getUid;
DatabaseReference current_user = mDatabase.child(user_id);
current_user.child("name").setValue(name);
progressDialog.dismiss();
}