that takes the classic principles of good design and combines it with a) technology and b) science - create a platform that works across different devices
functionality and use. For example, a knob affords twisting, and perhaps pushing A cord affords pulling. As a relation, an affordance exhibits the possibility of some action, and is not a property of either an organism or its environment alone. Affordance
visual, motion, and interaction design across platforms and devices. Surfaces and edges of the material provide visual cues that are grounded in reality. The use of familiar tactile attributes helps users quickly understand affordances. Inspired by paper/ink
<style name="AppTheme" parent="android:Theme.Material"> <!-‐-‐ Main theme colors -‐-‐> <!-‐-‐ your app branding color for the app bar -‐-‐> <item name="android:colorPrimary">@color/primary</item> <!-‐-‐ darker variant for the status bar and contextual app bars -‐-‐> <item name="android:colorPrimaryDark">@color/primary_dark</item> <!-‐-‐ theme UI controls like checkboxes and text fields -‐-‐> <item name="android:colorAccent">@color/accent</item> </style> </resources> API 21+ (Also in support library)