I tried to read OTP from received SMS with SmsRetrieverClient but broadcast receiver not calling

Question

I have tried to get sms using SmsRetrieverClient through its broadcast receiver, what actually problem is when SMS comes onReceive never calls to process it further but later on after 5 mins it calls receiver's timeout method.

Actually I tried library to get SMS and its working fine but asking for SMS read permission which unfortunately will face Google policy issue at the time of uploading app on playstore.

Below is my code.

Below is the SmsRetrieverClient method in my Activity:

 private void startSMSListener() {

    SmsRetrieverClient smsRetrieverClient = SmsRetriever.getClient(this);
    Task<Void> retriever = smsRetrieverClient.startSmsRetriever();
    retriever.addOnSuccessListener(new OnSuccessListener<Void>() {
        @Override
        public void onSuccess(Void aVoid) {
            SMSBroadcastReceiver.OTPListener otpListener = new SMSBroadcastReceiver.OTPListener() {
                @Override
                public void onOTPReceived(String otpData) {
                    inputOTP.setText(otpData);
                }

                @Override
                public void onOTPTimeOut() {
                    inputOTP.setText("");
                    Toast.makeText(ctx, "TimeOut", Toast.LENGTH_SHORT).show();
                }
            };

            smsBroadcastReceiver.injectOTPListener(otpListener);
            registerReceiver(smsBroadcastReceiver, new IntentFilter(SmsRetriever.SMS_RETRIEVED_ACTION));
        }
    });

    retriever.addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception e) {
            Toast.makeText(ctx, "Problem to start listener", Toast.LENGTH_SHORT).show();
        }
    });

}

Below code is of receiving SMS from broadcast receiver:

public class SMSBroadcastReceiver extends BroadcastReceiver {
private OTPListener otpReceiver;

public void injectOTPListener(OTPListener receiver) {
    this.otpReceiver = receiver;
}

@Override
public void onReceive(Context context, Intent intent) {
    if (SmsRetriever.SMS_RETRIEVED_ACTION.equals(intent.getAction())) {
        Bundle extras = intent.getExtras();
        Status status = (Status) extras.get(SmsRetriever.EXTRA_STATUS);
        System.out.println("SMS verification code::SMSBroadcastReceiver:0:  "+ status);

        switch (status.getStatusCode()) {

            case CommonStatusCodes.SUCCESS:

                String message = (String)extras.get(SmsRetriever.EXTRA_SMS_MESSAGE);
                Pattern pattern = Pattern.compile("\\d{4}");
                Matcher matcher = pattern.matcher(message);
                System.out.println("SMS verification code::SMSBroadcastReceiver:1:  "+ message);

                if (matcher.find()) {
                    if (otpReceiver != null){
                        otpReceiver.onOTPReceived(matcher.group(0));
                    }
                }
                break;

            case CommonStatusCodes.TIMEOUT:
                System.out.println("SMS verification code::SMSBroadcastReceiver:2:  TIMEOUT");

                if (otpReceiver != null){
                    otpReceiver.onOTPTimeOut();
                }
                break;
        }
    }
}


public interface OTPListener {

    void onOTPReceived(String otp);

    void onOTPTimeOut();
}
}

And in manifest:

     <receiver android:name=".SMSBroadcastReceiver"
        android:exported="true">
        <intent-filter>
            <action 

 android:name="com.google.android.gms.auth.api.phone.SMS_RETRIEVED"/>

        </intent-filter>
        </receiver>

is your SMS is in this format **<#> Your ExampleApp code is: 123ABC78 FA+9qCX9VSu** where **FA+9qCX9VSu** is app hash string — RAHUL MAURYA, Apr 09 '19 at 10:14
Yes @AtifAbbAsi message format is <#> Your ExampleApp code is: 123ABC78 FA+9qCX9VSu where FA+9qCX9VSu is app hash string. — yashraj sharma, Apr 09 '19 at 11:38
are you generating hashkey each time or not.? and are you sure hashkey is correct.? — Atif AbbAsi, Apr 09 '19 at 12:01
@AtifAbbAsi nope I created hashkey of app only once and I guess once hashkey is generated then it is same for the same app everytime no? and yes its correct hashkey still facing the same issue — yashraj sharma, Apr 09 '19 at 12:20
try one thing use hashkey helper class to generate hashkey each time and use that hashkey in sms. — Atif AbbAsi, Apr 09 '19 at 13:07
did you actually got the solution because I am facing the same problem in my application @yashrajsharma — vivek panchal, Aug 28 '19 at 11:02
my hashkey is 3Ro3X3Nr2FH. But not calling the broadcast receiver. Could you please me — Manikandan K, Jun 17 '20 at 15:13

score 0 · Accepted Answer · answered Apr 10 '19 at 06:59

Big Thanks for contributing your solutions, But I found out the solution after so many attempts the reason why broadcast was not receiving SMS otp is due to 2 reason:

1) The message should be of 140 bytes as in below link:

https://developers.google.com/identity/sms-retriever/verify#1_construct_a_verification_message

2) I found that at the time of developing broadcast I got 2 to 3 broadcast java files which I added in my app for testing the SMS each with different code which I registered in manifest all the SMS broadcast receivers with same action which was meaningless. So lastly removing all the other registered receivers from manifest of same action as "com.google.android.gms.auth.api.phone.SMS_RETRIEVED" and just worked on single broadcast receiver with single declaration in manifest with its action solved my problem.

I tried to read OTP from received SMS with SmsRetrieverClient but broadcast receiver not calling

1 Answers1