Room is an object mapping library that help us, the Android developers, to handle an SQLite database in the Android development. Continue reading “Android Room Persistence Library: Relations”
In February 2018 I was happy to be one of the speakers at MobOS in Cluj-Napoca. It was a nice experience, I received a lot of questions and I was impressed about the big number of the Android developers. My presentation was about Room so in this article I will cover a part of the concepts included in my slides.
The SOLID principles acronym was introduced by Michael Feathers for the principles that were defined by Robert C. Martin (Uncle Bob) in the early 2000s.
Usually when you create the design for an Android app we must add some transparency to different UI elements according to the requirements.
In order to have a transparent background, but not fully transparent, you should compute the hex number assigned to the desired percent of transparency in the alpha channel.