1. 94% Users Skip Pre-roll Ads. https://econsultancy.com/blog/63277-pre-rollvideo-ads-is-it-any-wonder-why-we-hatethem#i.9gohovetnegyqcc. 94% Users Skip Pre-roll Ads. https://econsultancy.com/blog/63277-pre-rollvideo-ads-is-it-any-wonder-why-we-hatethem#i.9gohovetnegyqcc.
2. Android Activity Testing. http://developer.android.com/tools/testing/activity_testing.html. Android Activity Testing. http://developer.android.com/tools/testing/activity_testing.html.
3. Android DDMS. http://developer.android.com/tools/debugging/ddms.html. Android DDMS. http://developer.android.com/tools/debugging/ddms.html.
4. Android Logcat. http://developer.android.com/tools/help/logcat.html. Android Logcat. http://developer.android.com/tools/help/logcat.html.
5. Android MediaPlayer. http://developer.android.com/reference/android/media/MediaPlayer.html. Android MediaPlayer. http://developer.android.com/reference/android/media/MediaPlayer.html.