Android Recipes, Fourth Edition offers more than 100 down-to-earth code recipes, and guides you step-by-step through a wide range of useful topics using complete and real-world working code examples. This book is updated to include the Android 5.0 SDK, as well as earlier releases.
Cross-Platform Mobile Development in C# (Professional)
Authors: Scott Olson, John Hunter, Ben Horgen, Kenny Goers. This book is written by professional developers for professional developers. It is not a book abouttechnology for technology’s sake.
Beginning Mobile App Development with React Native