ユーザインタフェース設計 - mixi-inc/AndroidTraining参考：Application Structure | Android Developers 参考：Navigation with Back and Up | Android Developers 参考：Action Bar | Android Developers 参考：Navigation Drawer | Android Developers 参考：Multi-pane Layouts | Android Developers 参考：Swipe Views | Android Developers 参考：Selection | Android Developers 参考：Confirming & Acknowledging | Android Developers 参考：Notifications | Android Developers 参考：Metrics and Grids |
