android.support.v17.leanback

支持建立Leanback用户体验的课程。

许多旨在用于10英尺或“背靠背”体验的应用都以媒体和游戏为中心。 游戏倾向于拥有自定义用户界面，但媒体应用程序可能会受益于在Leanback环境中运行良好的通用用户界面组件。 以下是Leanback支持库的概述。

Leanback提供了建模应用程序的模型 - 视图 - 演示者方法：

• The model is primarily provided by the application developer. Leanback imposes very few restrictions on how this model is implemented: anything extending Object in Java is supported.
• The view is handled by the existing android.view package. Developers may continue to use their existing knowledge and experience to create visually compelling applications with Leanback.
• The presenter is based on the existing Adapter concept in the Android framework, but has been updated to add more flexibility and composability. In particular, the interface for binding data to views has been separated from the adapter that traverses the data, allowing presenters to be used in more places. See Presenter for more details.

Leanback包含诸如android.support.v17.leanback.app包装中的Fragments等更高级别构建块的android.support.v17.leanback.app 。 着名的例子是BrowseFragment和GuidedStepFragment 。 还提供了助手类，它们与leanback碎片一起工作，例如PlaybackControlGlue 。

android.support.v17.leanback.widget包装中还提供了许多较低级别的构建块。 这些允许应用程序轻松整合Leanback外观，同时允许高度定制。 主要示例包括UI小部件HorizontalGridView和VerticalGridView 。 Helper类也存在于这个级别，不依赖于leanback片段，例如TitleHelper 。

Classes