Answer by Swapnil Sonar:
As android developer, I would like to suggest few references, may be a few of the them were mentioned earlier,Best is you go with official google documentation of android. They give very descriptive info and covers most of the concepts. – Building Your First AppThere are some free Android Development Courses as well like:
- Android Application Development | The New Boston
- Vogella | Android Development
- Programming Mobile Applications for Android Handheld Systems
- Building Mobile Applications
- Android Bootcamp Series 2012 Video Tutorials
- Android Tutorials: For Apps & Game Development
Essential Resources:
- Android Developers Blog
- awesome-android by snowdream
- Android DP/PX Converter – Pixplicity
- Cyril Mottier
- The Busy Coder’s Guide to Android Development
- Keep your android updated with – http://androiddevweekly.com/
- Fast Emulator – https://www.genymotion.com/#!/
- https://android-arsenal.com
- Android Asset Studio
What are the good online tutorials and books to learn Android development?