GuidedActionsStylist

public class GuidedActionsStylist
extends Object implements FragmentAnimationProvider

java.lang.Object
	android.support.v17.leanback.widget.GuidedActionsStylist

GuidedActionsStylist在GuidedStepFragment用于提供用户可以采取行动的右侧面板。它由用于动作列表的容器和静止的选择器视图组成，该视图以可视方式指示焦点的位置。 GuidedActionsStylist有两种不同的布局：默认为正常操作，包括文本，广播，复选框，DatePicker等，另一个当setAsButtonActions()时，推荐用于诸如“yes”，“no”等按钮操作。

基础GuidedActionsStylist的许多方面都可以通过主题进行定制; 请参阅下面的主题属性。请注意，这些属性不是在布局XML中的单个元素上设置的，而是在自定义主题中设置的。有关更多信息，请参阅Styles and Themes 。

如果这些钩子不够用，这个类别也可能被分类。子类可能希望覆盖onProvideLayoutId()方法来更改用于显示列表容器和选择器的布局; 覆盖onProvideItemLayoutId(int)和getItemViewType(GuidedAction)方法来更改用于显示每个操作的布局。

要支持类似于DatePicker的“点击激活”视图，应用程序需要：

Override onProvideItemLayoutId(int) and getItemViewType(GuidedAction), provides a layout id for the action.

The layout must include a widget with id "guidedactions_activator_item", the widget is toggled edit mode by setActivated(boolean).

Override onBindActivatorView(ViewHolder, GuidedAction) to populate values into View.

Override onUpdateActivatorView(ViewHolder, GuidedAction) to update action.

注意：如果提供备用列表布局，则必须提供以下视图ID：

guidedactions_list

这些视图ID必须存在才能让设计师发挥作用。列表ID必须对应于VerticalGridView或子类。

如果提供了替代项目布局，则应使用以下视图ID来引用基本元素：

这些视图ID可以丢失，在这种情况下， GuidedActionsStylist.ViewHolder的相应视图将为空。

为了支持可编辑的动作，与guidedactions_item_title相关联的视图应该是的一个子类 EditText ，并应满足 ImeKeyMonitor接口。

也可以看看：

摘要(Summary)

Nested classes
`class`	`GuidedActionsStylist.ViewHolder` ViewHolder缓存关于操作项目布局子视图的信息。

XML attributes
`android.support.v17.leanback:guidedActionDescriptionMinLines`	Theme attribute used in a GuidedActionsPresenter for the max lines of the title text view when the action's isMultilineDescription is set to false.
`android.support.v17.leanback:guidedActionDisabledChevronAlpha`	Theme attribute used in a GuidedActionsPresenter for the alpha value of the chevron decoration when its action is disabled.
`android.support.v17.leanback:guidedActionEnabledChevronAlpha`	Theme attribute used in a GuidedActionsPresenter for the alpha value of the chevron decoration when its action is enabled.
`android.support.v17.leanback:guidedActionItemCheckmarkStyle`	Theme attribute for the style of an action's checkmark in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionItemChevronStyle`	Theme attribute for the style of an action's chevron decoration in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionItemContainerStyle`	Theme attribute for the style of the container of a single action in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionItemContentStyle`	Theme attribute for the style of an action's content in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionItemDescriptionStyle`	Theme attribute for the style of an action's description in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionItemIconStyle`	Theme attribute for the style of an action's icon in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionItemTitleStyle`	Theme attribute for the style of an action's title in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionPressedAnimation`	Theme attribute for the animation used in a GuidedActionsPresenter when an action is pressed.
`android.support.v17.leanback:guidedActionTitleMaxLines`	Theme attribute used in a GuidedActionsPresenter for the max lines of the title text view when the action's isMultilineDescription is set to true.
`android.support.v17.leanback:guidedActionTitleMinLines`	Theme attribute used in a GuidedActionsPresenter for the max lines of the title text view when the action's isMultilineDescription is set to false.
`android.support.v17.leanback:guidedActionUnpressedAnimation`	Theme attribute for the animation used in a GuidedActionsPresenter when an action is unpressed.
`android.support.v17.leanback:guidedActionVerticalPadding`	Theme attribute used in a GuidedActionsPresenter for the vertical padding between action views in the list.
`android.support.v17.leanback:guidedActionsListStyle`	Theme attribute for the style of the list in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedActionsSelectorDrawable`	Theme attribute for the style of the item selector in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedButtonActionsListStyle`	Theme attribute for the style of the list in a GuidedActionsPresenter.
`android.support.v17.leanback:guidedStepImeAppearingAnimation`	Theme attribute for the animation used when a guided step element is animated in response to the IME appearing.
`android.support.v17.leanback:guidedStepImeDisappearingAnimation`	Theme attribute for the animation used when a guided step element is animated in response to the IME disappearing.
`android.support.v17.leanback:guidedSubActionsListStyle`	Theme attribute for the style of the sub actions list in a GuidedActionsPresenter.

常量(Constants)
`int`	`VIEW_TYPE_DATE_PICKER` DatePicker的ViewType。
`int`	`VIEW_TYPE_DEFAULT` 与操作项目的默认布局ID关联的默认视图类型。

Public constructors
`GuidedActionsStylist()`

公共方法(Public methods)
`VerticalGridView`	`getActionsGridView()` 返回显示GuidedActions列表的VerticalGridView。
`GuidedAction`	`getExpandedAction()`
`int`	`getItemViewType(GuidedAction action)` 返回视图类型的操作，每种不同的类型可以有不同的关联布局ID。
`VerticalGridView`	`getSubActionsGridView()` 返回显示展开操作的子操作列表的VerticalGridView。
`boolean`	`isButtonActions()` 如果它是按钮操作列表，则返回true;对于普通操作列表，则返回false。
`boolean`	`isExpandTransitionSupported()` 返回是否支持展开/折叠动画。
`boolean`	`isInExpandTransition()` 如果正在运行展开或折叠转换，则返回true，否则返回false。
`boolean`	`isSubActionsExpanded()`
`void`	`onAnimateItemChecked(GuidedActionsStylist.ViewHolder vh, boolean checked)` 当动作的检查状态改变时，动画化视图持有者的视图（或其子视图）。
`void`	`onAnimateItemFocused(GuidedActionsStylist.ViewHolder vh, boolean focused)` 当动作的焦点状态改变时，动画化视图持有者的视图（或其子视图）。
`void`	`onAnimateItemPressed(GuidedActionsStylist.ViewHolder vh, boolean pressed)` 当动作的按下状态改变时，动画化视图持有者的视图（或其子视图）。
`void`	`onAnimateItemPressedCancelled(GuidedActionsStylist.ViewHolder vh)` 将视图持有者的视图重置为未按下状态。
`void`	`onBindActivatorView(GuidedActionsStylist.ViewHolder vh, GuidedAction action)` 将绑定激活器视图值执行到操作。
`void`	`onBindCheckMarkView(GuidedActionsStylist.ViewHolder vh, GuidedAction action)` 当操作的检查集ID不是 `NO_CHECK_SET`时，设置复选标记视图的状态，由 `onBindViewHolder(ViewHolder, GuidedAction)` `NO_CHECK_SET` 。
`void`	`onBindChevronView(GuidedActionsStylist.ViewHolder vh, GuidedAction action)` 设置V形视图的状态，由 `onBindViewHolder(ViewHolder, GuidedAction)` 。
`void`	`onBindViewHolder(GuidedActionsStylist.ViewHolder vh, GuidedAction action)` 将 `GuidedActionsStylist.ViewHolder`绑定到特定的 `GuidedAction` 。
`View`	`onCreateView(LayoutInflater inflater, ViewGroup container)` 使用提供的inflater和容器创建适合显示GuidedAction列表的视图。
`GuidedActionsStylist.ViewHolder`	`onCreateViewHolder(ViewGroup parent, int viewType)` 构造一个 `GuidedActionsStylist.ViewHolder`能够表示 `GuidedAction`秒。
`GuidedActionsStylist.ViewHolder`	`onCreateViewHolder(ViewGroup parent)` 构造一个 `GuidedActionsStylist.ViewHolder`能够表示 `GuidedAction`秒。
`void`	`onDestroyView()` 在销毁由GuidedActionsStylist创建的视图时调用。
`void`	`onImeAppearing(List<Animator> animators)` 动画片段响应IME出现。
`void`	`onImeDisappearing(List<Animator> animators)` 动画片段以响应IME消失。
`int`	`onProvideItemLayoutId()` 为单个指导操作提供定义视图的布局的资源ID。
`int`	`onProvideItemLayoutId(int viewType)` 为单个指导操作提供定义视图的布局的资源ID。
`int`	`onProvideLayoutId()` 提供定义指导操作列表的主机视图的布局的资源ID。
`boolean`	`onUpdateActivatorView(GuidedActionsStylist.ViewHolder vh, GuidedAction action)` 从激活器视图执行更新GuidedAction。
`void`	`onUpdateExpandedViewHolder(GuidedActionsStylist.ViewHolder avh)` 展开或折叠GuidedActionStylist。
`void`	`setAsButtonActions()` 选择 `onProvideLayoutId()`按钮操作的布局资源。
`void`	`setEditingMode(GuidedActionsStylist.ViewHolder vh, GuidedAction action, boolean editing)`
`void`	`setExpandedViewHolder(GuidedActionsStylist.ViewHolder avh)` 展开或折叠子动作列表视图。
`void`	`startExpandedTransition(GuidedActionsStylist.ViewHolder avh)` 开始转换以展开或折叠GuidedActionStylist。

Protected methods
`void`	`onEditingModeChange(GuidedActionsStylist.ViewHolder vh, GuidedAction action, boolean editing)`
`void`	`setupImeOptions(GuidedActionsStylist.ViewHolder vh, GuidedAction action)` 由 `onBindViewHolder(ViewHolder, GuidedAction)`调用以设置IME选项。

继承方法(Inherited methods)

From class java.lang.Object

From interface android.support.v17.leanback.widget.FragmentAnimationProvider

XML attributes

android.support.v17.leanback:guidedActionDescriptionMinLines

当动作的isMultilineDescription设置为false时，GuidedActionsPresenter中使用的主题属性用于标题文本视图的最大行数。默认是lb_guidedactions_item_description_min_lines 。