AndroidFeatures In order to study some android features with simple app projects FeatureList Basic app Data binding Android Custom View Constraint Layout Basic APP - DiceRoller DiceRoller Data binding - About Me Databinding Android Custom View - Smile CustomView Reference Developing Android Apps with Kotlin , Lesson 1 https://www.udacity.com/course/developing-android-apps-with-kotlin--ud9012 https://www.raywenderlich.com/142-android-custom-view-tutorial