onVerificationFailed(FirebaseException) This method is called, when error occurred during verification. onCodeSent(String verificationId, PhoneAuthProvider.ForceResendingToken) This method is called when the verification code is send to user via SMS.Hi Friends. In this tutorial, we will learn how to implement firebase phone authentication with it's origin.Digits is an Simple User Phone Authentication Service to create easy login experience. Now Digits is acquired by Google's Firebase and it provides free service for limited amount of authentication per month. However, if you need to sign in a very high volume of users with phone authentication, you might need to upgrade your pricing plan. See the pricing page.You can use Firebase Authentication to sign in a user by sending an SMS message to the user's phone. The user signs in using a one-time code contained in the SMS message.Setup Firebase
To setup firebase in your project, read previous post. After setting up, open Authentication sign in method and enable phone authentication method.You should Add SHA Fingerprint in your application. To get SHA Fingerprint use the following Code with Command Prompt in Windowskeytool -list -v -keystore "%USERPROFILE%\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android
Coding Part
Add the dependency for Firebase Authentication to your app-level build.gradle file:dependencies { ... compile 'com.google.firebase:firebase-auth:11.0.0' } // Add to the bottom of the file apply plugin: 'com.google.gms.google-services'
Add the dependency for Play Services to your project-level build.gradle file:
dependencies { ... classpath 'com.google.gms:google-services:3.1.0' }
Send a verification code to the user's phone
To initiate phone number sign-in, present the user an interface that prompts them to type their phone number. Send OTP to user by pass their phone number to the PhoneAuthProvider.verifyPhoneNumber method to request that Firebase verify the user's phone number. For example,mCallbacks is used to know the verification status and the callback method is implemented as in the followingPhoneAuthProvider.getInstance().verifyPhoneNumber( phoneNumber, // Phone number to verify 60, // Timeout duration TimeUnit.SECONDS, // Unit of timeout this, // Activity (for callback binding) mCallbacks); // OnVerificationStateChangedCallbacks
onVerificationCompleted(PhoneAuthCredential) This method is called, when the user number verified successfully.mCallbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() { @Override public void onVerificationCompleted(PhoneAuthCredential credential) { Log.d(TAG, "onVerificationCompleted:" + credential); signInWithPhoneAuthCredential(credential); } @Override public void onVerificationFailed(FirebaseException e) { Log.w(TAG, "onVerificationFailed", e); if (e instanceof FirebaseAuthInvalidCredentialsException) { mPhoneNumberField.setError("Invalid phone number."); } else if (e instanceof FirebaseTooManyRequestsException) { Snackbar.make(findViewById(android.R.id.content), "Quota exceeded.", Snackbar.LENGTH_SHORT).show(); } } @Override public void onCodeSent(String verificationId, PhoneAuthProvider.ForceResendingToken token) { Log.d(TAG, "onCodeSent:" + verificationId); mVerificationId = verificationId; mResendToken = token; } };
Create a PhoneAuthCredential object
The phone auth credits are created as in the following snippetThen we can verify and store the Phone Authentication user details by using the following method.PhoneAuthCredential credential = PhoneAuthProvider.getCredential(verificationId, code); // verificationId can be found in onCodeSent function in callback functionality // code is retrieved from SMS send by Firebase
mAuth.signInWithCredential(credential) .addOnCompleteListener(this, new OnCompleteListener
() { @Override public void onComplete(@NonNull Task task) { if (task.isSuccessful()) { Log.d(TAG, "signInWithCredential:success"); FirebaseUser user = task.getResult().getUser(); startActivity(new Intent(PhoneAuthActivity.this, MainActivity.class)); finish(); } else { Log.w(TAG, "signInWithCredential:failure", task.getException()); if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) { mVerificationField.setError("Invalid code."); } } } }); Sign Out
To sign out from your Application just use signout method in your Auth method.FirebaseAuth mAuth = FirebaseAuth.getInstance(); mAuth.signOut();
Firebase Phone Authentication
Categories:
Firebase
Firebase Phone Authentication