Read sms automatically to verify OTP

Reading incoming message automatically in android to verify OTP

Here I am going to explain how to read the incoming message in android automatically to verify OTP without 

closing the app.

Step 1. ReadSms.class

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.util.Log;

public class ReadSms extends BroadcastReceiver 
{
    @Override
    public void onReceive(Context context, Intent intent) 
    {

         final Bundle bundle = intent.getExtras();
         try {

             if (bundle != null) 
             {
                  
                  final Object[] pdusObj = (Object[]) bundle.get("pdus");
                  for (int i = 0; i < pdusObj.length; i++) 
                  {

                       SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
                       String phoneNumber = currentMessage.getDisplayOriginatingAddress();                       
                       String senderNum = phoneNumber ;
                       String message = currentMessage .getDisplayMessageBody();
    
                       try
                       { 
     
                             if (senderNum.equals("TA-DOCOMO")) 
                             {
                                    
                                  Otp Sms = new Otp();
                                  Sms.recivedSms(message );
                             }
                       } catch(Exception e){}
                 }
            }

        } catch (Exception e) {}     
    }

}

here, "pdus" is a "protocol data unit", it is an industry standard for SMS.

mobile SMS applications always use PDUs to encode the contents of a SMS message...

Step 2. Otp.class

public class Otp extends Activity 
{

       static EditText OtpNumber;
       protected void onCreate(Bundle savedInstanceState) 
       {
       
              super.onCreate(savedInstanceState);
              setContentView(R.layout.otp);
              OtpNumber = (EditText) findViewById(R.id.txtName);
       }
      
       public void recivedSms(String message) 
       {
            try 
            {
                   OtpNumber.setText(message);
            } 
            catch (Exception e) {}     
             
       }
}   

Step 3. Add the below permissions and receiver to your manifest file

We need to give below run-time permissions for marshmallow OS :

1. RECEIVE_SMS

2. READ_SMS

3. SEND_SMS

<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />

<receiver android:name=".ReadSms">
    <intent-filter>
       <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
    </intent-filter>
</receiver>

Reference : http://androiddhina.blogspot.in/2015/06/reading-incoming-message-automatically-to-verify-OTP.html