Q1. Ina chat application, youwant users to receive updates about messages in a chat room only when they’re subscribed to that room. The...

Overview Android L (later released as Android 5.0 Lollipop) introduced one of the most significant visual and interaction design evolutions...

Overview Touch interaction is fundamental to mobile applications. Android provides a rich set of UI feedback mechanisms and gesture...

Overview Android UI design patterns provide standardized solutions to common interface and interaction challenges in mobile applications....

Overview Mobile application design is a multidisciplinary discipline that influences usability, accessibility, performance, and user...