email and password should not be null or empty String email = mEmail.getText().toString(); String password = mPassword.getText().toString(); if(email.isEmpty() || password.isEmpty()) return; //you need to display message to the user mAuth.createUserWithEmailAndPassword(email, password) .addOnCompleteListener(CustomerLoginActivity.this, new OnCompleteListener<AuthResult>() { … }) solved App crashes when registration button is pressed
It looks like that call validates the values that the user entered into the form, before sending those values to the server to create an account with them. This type of client-side validation can improve the experience of the users of the app, since they get more immediate feedback in case they entered some invalid … Read more
No, it is not clear. It’s recommended to take the user to a new screen (launch a new Activity/Fragment) upon the click on the “Sign Up” button. Also, it’s advised that you have 2 fields for password setting in case the person misspells the password upon sign up (this might cause the user to be … Read more
If you want to do something like giving special login access like usernames and passwords, you can use Firebase realtime database to do so. You can create a node named credentials and then store every new username and password in it. Then to check if a person is logging in with correct details, you can … Read more
When you call the method “createNewUser()”, you are inside of an onClickListener. When you pass in ‘this’ as your context, you are passing in the context of your listener. Instead, when calling createNewUser, use ‘MainActivity.this’ as your Context, so then your app knows that the context is the whole activity and not just the listener. … Read more
Firebase ML Kit can perform face detection. It does however not perform face recognition. In other words: it can tell you that there is a face in a picture (and where it is), but it can’t tell you who it is. This makes it impossible to use ML Kit for authenticating a user. 3 solved … Read more
This answer is similar to a prior answer here What you want to do is to treat each child in Customers as a DataSnapshot, then the children can be accessed. Given a Firebase structure: usersDatabase uid_0 Customers Ben Smith data: “Some data” Tom Cruise data: “Some data” uid_1 Customers Leroy Jenkins data: “Some data” uid_2 … Read more
I keep getting java.lang.String com.google.firebase.auth.FirebaseUser.getUid()’ error although it has already confirmed they is a user solved I keep getting java.lang.String com.google.firebase.auth.FirebaseUser.getUid()’ error although it has already confirmed they is a user