设置Android背景和持久性菜单栏——在旧版本上使用属性会导致崩溃——是否有主题/模式方法?

In Android 3.0, the concept of "checked" can be rendered using an "activated" background. This gives you the persistent bar you see when you tap on a list fragment, providing context for the fragment to the list's right (e.g., tapping on a folder in Gmail highlights that folder and opens up another list fragment to show the conversations in that folder).In Android 3.0, the concept of "checked" can be