include 'MyApp', ':Read_SMS'

### Step 2 : Add Code to your Project

  Code for Checking the Version of Android Device for Asking the Runtime Permission.
  
    if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1)
    {
        readOTP();
    }
    else
    {
        int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 1;
        Acess_SMS.getOTP(MainActivity.this, REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
    }
    
     @TargetApi(Build.VERSION_CODES.M)
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull final String[] permissions, @NonNull int[] grantResults)
{
    switch (requestCode)
    {
        case 1:
        {
            Map<String, Integer> perms = new HashMap<>();

            perms.put(android.Manifest.permission.READ_SMS, PackageManager.PERMISSION_GRANTED);


            for (int i = 0; i < permissions.length; i++)
            {
                perms.put(permissions[i], grantResults[i]);
            }


            if (perms.get(android.Manifest.permission.READ_SMS) == PackageManager.PERMISSION_GRANTED)
            {
                readOTP();
            }



                if (grantResults[0] == PackageManager.PERMISSION_DENIED)
                {
                    boolean should = ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.READ_SMS);
                    if (should)
                    {
                        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this, R.style.MyAlertDialogStyle);
                        builder.setTitle(R.string.permission_denied);
                        builder.setMessage(R.string.permission_auro_read_sms);
                        builder.setPositiveButton(R.string.i_am_sure, new DialogInterface.OnClickListener()
                        {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
                            }
                        });
                        builder.setNegativeButton(R.string.re_try, new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.dismiss();
                                ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.READ_SMS}, MY_PERMISSIONS_REQUEST_READ_SMS);
                            }
                        });
                        builder.show();

                    }
                }

            break;
        }

        case 2:
        {
            Map<String, Integer> perms = new HashMap<>();

            perms.put(android.Manifest.permission.READ_SMS, PackageManager.PERMISSION_GRANTED);

            for (int i = 0; i < permissions.length; i++)
                perms.put(permissions[i], grantResults[i]);

            if(perms.get(android.Manifest.permission.READ_SMS) == PackageManager.PERMISSION_GRANTED)
            {
                readOTP();
            }

            break;
        }

        default:
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }

}

private void readOTP()
{
    SmsReceiver.bindListener(new SmsListener()
    {
        @Override
        public void messageReceived(String messageText)
        {
            edt_verify_otp.setText(messageText);
            
            //Note: "edt_verify_otp" is your Editext Object.
        }
    });
}

/**********************************************************************/

Code Snippet to be Add on styles.xml File

/****Below is the code for Runtime Permission Alert Dialog***************/

<style name="MyAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
    <!-- Used for the buttons -->
    <item name="colorAccent">#000000</item>
    <!-- Used for the title and text -->
    <item name="android:textColorPrimary">#000000</item>
    <!-- Used for the background -->
    <item name="android:background">#FFFFFF</item>
</style>

/****Above is the code for Runtime Permission Alert Dialog***************/

/**********************************************************************/

Code Snippet to be Add on strings.xml File

/******************* Runtime Permission *******************/

<string name="i_am_sure">I AM SURE</string>
<string name="re_try">RE-TRY</string>
<string name="permission_denied">Permission Denied</string>
<string name="toast_for_cancelling_the_permission">Sorry you can not proceed further process</string>
<string name="You_need_to_Accept">You need to Accept</string>
<string name="permission_to_access_the_app">permissions to access the app</string>
<string name="RECEIVE_SMS">RECEIVE_SMS</string>
<string name="READ_SMS">READ_SMS</string>
<string name="please_manually_enter_the_otp">Please Manually Enter the OTP</string>
<string name="permission_auro_read_sms">Without this permission the app is unable to auto fill the OTP. Are you sure you want to Deny this permission.?</string>

/******************* Runtime Permission *******************/