How to resend SMS verification in Firebase Phone Authentication Android?

问题

According to Firebase documentation (https://firebase.google.com/docs/auth/android/phone-auth#send-a-verification-code-to-the-users-phone), there is callback for handling the phone number authentication.

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);
    }

    @Override
    public void onCodeSent(String verificationId,
                           PhoneAuthProvider.ForceResendingToken token) {

        Log.d(TAG, "onCodeSent:" + verificationId);

        // Save verification ID and resending token so we can use them later
        mVerificationId = verificationId;
        mResendToken = token;
    }
};

My question is on onCodeSent method. It said on the doc here (https://firebase.google.com/docs/reference/android/com/google/firebase/auth/PhoneAuthProvider.ForceResendingToken)

that the token can be used to force re-sending an SMS verification code. However, after doing some research on the doc I still don't know how.

I would like to ask how to use this token to resend the SMS verification ?

回答1:

Source: Github

This is the method used to resend SMS Verifications.

private void resendVerificationCode(String phoneNumber,
                                    PhoneAuthProvider.ForceResendingToken token) {
    PhoneAuthProvider.getInstance().verifyPhoneNumber(
            phoneNumber,        // Phone number to verify
            60,                 // Timeout duration
            TimeUnit.SECONDS,   // Unit of timeout
            this,               // Activity (for callback binding)
            mCallbacks,         // OnVerificationStateChangedCallbacks
            token);             // ForceResendingToken from callbacks
}

回答2:

you can use a Firebase method to resend verification code as say PERSISTENCE and intercept sms code for to check in automatic, for instance while run a progress dialog, and transparent to the user, simply which

// [START resend_verification]
public void resendVerificationCode(String phoneNumber,
                                   PhoneAuthProvider.ForceResendingToken token) {
    PhoneAuthProvider.getInstance().verifyPhoneNumber(
            phoneNumber,        // Phone number to verify
            60,                 // Timeout duration
            TimeUnit.SECONDS,   // Unit of timeout
            activity,           //a reference to an activity if this method is in a custom service
            mCallbacks,
            token);        // resending with token got at previous call's `callbacks` method `onCodeSent` 
    // [END start_phone_auth]
}

check the sms with broadcast receiver in a fragment

private BroadcastReceiver smsBroadcastReceiver;
IntentFilter filter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
public static final String SMS_BUNDLE = "pdus";

 @Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    smsBroadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.e("smsBroadcastReceiver", "onReceive");
            Bundle pudsBundle = intent.getExtras();
            Object[] pdus = (Object[]) pudsBundle.get(SMS_BUNDLE);
            SmsMessage messages = SmsMessage.createFromPdu((byte[]) pdus[0]);
            Log.i(TAG,  messages.getMessageBody());

            firebaseVerificationCode = messages.getMessageBody().trim().split(" ")[0];//only a number code 
            Toast.makeText(getContext(), firebaseVerificationCode,Toast.LENGTH_SHORT).show();
            String token = firebaseAutenticationService.getVerificationCode();//your service
        firebaseAutenticationService.verifyPhoneNumberWithCode(token,verificationCode);
        }
    };
}

来源：https://stackoverflow.com/questions/44688761/how-to-resend-sms-verification-in-firebase-phone-authentication-android