Check the given rubric for requirments to be implemented : https://review.udacity.com/#!/rubrics/829/view
The Objective on the project is to implement.
1.Use MediaPlayer/Exoplayer to display videos.
2.Handle error cases in Android.
3.Add a widget to your app experience.
4.Leverage a third-party library in your app.
6.Use Fragments to create a responsive design that works on phones and tablets.