Tatvasoft Senior Android Developer interview questions

I applied via online job portal. The interview hardly took 20 minutes. The interviewer was very dumb and had no knowledge of how to take an interview. He asked me a couple of questions related to latest technologies and changes in Android. He didn't ask any logical questions or questions related to core java. I was able to answer almost all the questions. Looking at the knowledge of interviewer, I doubt the technical skills of their employees.