How to get current user name/useID who is logged in on the MFP device?

Using the SDKService

AndroidManifest.xml

<receiver android:name=".Application"
android:permission="jp.co.ricoh.isdk.sdkservice.common.SdkService.APP_EVENT_PERMISSION">
<intent-filter>
<action android:name="jp.co.ricoh.isdk.sdkservice.auth.GET_AUTH_STATE"/>
</intent-filter>
</receiver>

Application*.java

_context = context;
Intent intent = new Intent(Constants.ACTION_GET_AUTH_STATE);
BroadcastReceiver resultReceiver = new BroadcastReceiver() {

@Override
public void onReceive(Context c, Intent i) {
  Bundle extras = getResultExtras(false);
  //This one returns UserId and UserName of the device authentication
  userid = extras.getString("USER_ID");
  username = extras.getString("USER_NAME");
  boolean r = extras.getBoolean(Constants.EXTRA_RESULT);
  }
};
 context.sendOrderedBroadcast(intent, CMD_PERMISSION, resultReceiver, null, 0, null, null);