实现类似优酷客户端底部导航菜单按钮。效果十分炫，用户拖动列表是，导航按钮自动隐藏。点击某个按钮，更多按钮会从底部引出。具体效果请看视频。测试时，需将模拟器的语言区域设置成中国。-Achieve similar Youku client navigation menu at the bottom of the button. Hyun, the user drags the list, navigation buttons automatically hide. Click on a button

用户自定义的返回按钮，以及隐藏返回按钮。-Custom back button, and hide the Back button.

一个在奇巧介绍的功能是“沉浸式模式”。身临其境的模式为用户提供了显示/隐藏状态栏和导航栏与swipe.To试的能力，点击“切换身临其境模式”按钮，然后尝试刷卡酒吧和退出！-One of the features introduced in KitKat is immersive mode . Immersive mode gives the user the ability to show/hide the status bar and navigation bar with a swipe.

A Web Browser App in Android This article demonstrates creating a Browser App in Android-Introduction Sometimes we need to display some online content in our Android App. It would be very helpful if we could use a control that displays such on