Auxiliary ModulesΒΆ File Explorer Prerequisites Usage Events Example API Font Manager Usage Example API Fragment Usage Example API Grid navigation Usage Focusable Widgets Examples API Pinyin IME Usage Custom Dictionary Modes Example API Image font Usage Example API Monkey Usage Example API Widget ID Usage Widget Properties What is a Widget Property? Usage Additional Notes API Observer How to Use Examples Snapshot Usage Example API UI Testing Overview Usage API XML - Declarative UI Introduction Component Library Project Syntax Components Screens Widgets Preview API Styles Constants View Fonts Images Events Subjects Animations Translations