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Added in API level 16

MediaRouteButton

public class MediaRouteButton
extends View

java.lang.Object
↳	android.view.View
	↳	android.app.MediaRouteButton

Summary

Inherited XML attributes

From class android.view.View

Inherited constants

From class android.view.View

Inherited fields

From class android.view.View

Public constructors
`MediaRouteButton(Context context)`
`MediaRouteButton(Context context, AttributeSet attrs)`
`MediaRouteButton(Context context, AttributeSet attrs, int defStyleAttr)`
`MediaRouteButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)`

Public methods
`int`	`getRouteTypes()` 获取媒体路由类型以过滤用户可以使用媒体路由选择器对话框选择的路由。
`void`	`jumpDrawablesToCurrentState()` 在与此视图关联的所有可绘制对象上调用 `Drawable.jumpToCurrentState()` 。
`void`	`onAttachedToWindow()` 这在视图附加到窗口时被调用。
`void`	`onDetachedFromWindow()` 这是在视图从窗口分离时调用的。
`boolean`	`performClick()` 调用此视图的OnClickListener（如果已定义）。
`boolean`	`performLongClick()` 调用此视图的OnLongClickListener（如果已定义）。
`void`	`setExtendedSettingsClickListener(View.OnClickListener listener)`
`void`	`setRouteTypes(int types)` 设置将在由此按钮启动的媒体路径选择器对话框中显示的路线类型。
`void`	`setVisibility(int visibility)` 设置此视图的启用状态。
`void`	`showDialog()` 显示路线选择器或控制器对话框。

Protected methods
`void`	`drawableStateChanged()` 只要视图的状态发生变化，就会调用此函数，使得它影响所显示的可绘制状态。
`int[]`	`onCreateDrawableState(int extraSpace)` 为此视图生成新的 `Drawable`状态。
`void`	`onDraw(Canvas canvas)` 实施这个来做你的绘画。
`void`	`onMeasure(int widthMeasureSpec, int heightMeasureSpec)` 测量视图及其内容以确定测量宽度和测量高度。
`boolean`	`verifyDrawable(Drawable who)` 如果你的视图子类正在显示它自己的Drawable对象，它应该覆盖这个函数，并且对于它显示的任何Drawable返回true。

Inherited methods

From class android.view.View

From class java.lang.Object

From interface android.graphics.drawable.Drawable.Callback

From interface android.view.KeyEvent.Callback

From interface android.view.accessibility.AccessibilityEventSource

Public constructors

MediaRouteButton

Added in API level 16

MediaRouteButton (Context context)

Parameters
`context`	`Context`

MediaRouteButton

Added in API level 16

MediaRouteButton (Context context, 
                AttributeSet attrs)

Parameters
`context`	`Context`
`attrs`	`AttributeSet`

MediaRouteButton

Added in API level 16

MediaRouteButton (Context context, 
                AttributeSet attrs, 
                int defStyleAttr)

Parameters
`context`	`Context`
`attrs`	`AttributeSet`
`defStyleAttr`	`int`

MediaRouteButton

Added in API level 21

MediaRouteButton (Context context, 
                AttributeSet attrs, 
                int defStyleAttr, 
                int defStyleRes)

Parameters
`context`	`Context`
`attrs`	`AttributeSet`
`defStyleAttr`	`int`
`defStyleRes`	`int`

Public methods

getRouteTypes

Added in API level 16

int getRouteTypes ()

获取媒体路由类型以过滤用户可以使用媒体路由选择器对话框选择的路由。

Returns
`int`	The route types.

jumpDrawablesToCurrentState

Added in API level 16

void jumpDrawablesToCurrentState ()

在与此视图关联的所有可绘制对象上调用 Drawable.jumpToCurrentState() 。

如果有一个StateListAnimator附加到这个视图，也调用 jumpToCurrentState() 。

onAttachedToWindow

Added in API level 16

void onAttachedToWindow ()

这在视图附加到窗口时被调用。此时它有一个Surface并将开始绘制。请注意，此函数保证在onDraw(android.graphics.Canvas)之前被调用，但可以在第一次onDraw之前的任何时候调用 - 包括onMeasure(int, int)之前或之后。

onDetachedFromWindow

Added in API level 16

void onDetachedFromWindow ()

这是在视图从窗口分离时调用的。此时它不再有绘图表面。

performClick

Added in API level 16

boolean performClick ()

调用此视图的OnClickListener（如果已定义）。执行与点击相关的所有常规操作：报告辅助功能事件，播放声音等。

Returns
`boolean`	True there was an assigned OnClickListener that was called, false otherwise is returned.

performLongClick

Added in API level 16

boolean performLongClick ()

调用此视图的OnLongClickListener（如果已定义）。如果OnLongClickListener没有使用该事件，则调用上下文菜单。

Returns
`boolean`	`true` if one of the above receivers consumed the event, `false` otherwise

setExtendedSettingsClickListener

Added in API level 16

void setExtendedSettingsClickListener (View.OnClickListener listener)

Parameters
`listener`	`View.OnClickListener`

setRouteTypes

Added in API level 16

void setRouteTypes (int types)

设置将在由此按钮启动的媒体路径选择器对话框中显示的路线类型。

Parameters
`types`	`int`: The route types to match.

setVisibility

Added in API level 16

void setVisibility (int visibility)

设置此视图的启用状态。

Parameters
`visibility`	`int`: One of `VISIBLE`, `INVISIBLE`, or `GONE`.

showDialog

Added in API level 16

void showDialog ()

显示路线选择器或控制器对话框。

如果选择默认路由或者当前选择的路由与route types不匹配，则显示路由选择器对话框。否则，显示路线控制器对话框，以便为用户提供选择以断开路线或执行其他控制操作，例如设置路线的音量。

这将附加一个 DialogFragment到包含活动。

Protected methods

drawableStateChanged

Added in API level 16

void drawableStateChanged ()

只要视图的状态发生变化，就会调用此函数，使得它影响所显示的可绘制状态。

如果View有一个StateListAnimator，它也将被调用来运行必要的状态改变动画。

重写此功能时，一定要调用超类。

onCreateDrawableState

Added in API level 16

int[] onCreateDrawableState (int extraSpace)

为此视图生成新的Drawable状态。当缓存的Drawable状态被确定为无效时，这由视图系统调用。要检索当前状态，您应该使用getDrawableState() 。

Parameters
`extraSpace`	`int`: if non-zero, this is the number of extra entries you would like in the returned array in which you can place your own states.

Returns
`int[]`	Returns an array holding the current `Drawable` state of the view.

onDraw

Added in API level 16

void onDraw (Canvas canvas)

实施这个来做你的绘画。

Parameters
`canvas`	`Canvas`: the canvas on which the background will be drawn

onMeasure

Added in API level 16

void onMeasure (int widthMeasureSpec, 
                int heightMeasureSpec)

测量视图及其内容以确定测量宽度和测量高度。此方法由measure(int, int)调用， measure(int, int)子类覆盖以提供其内容的准确和有效的度量。

合同：覆盖此方法时，必须调用setMeasuredDimension(int, int)来存储此视图的测量宽度和高度。如果不这样做，将触发IllegalStateException ，由measure(int, int)引发。调用超类' onMeasure(int, int)是一种有效的用法。

Measure的基类实现默认为背景大小，除非MeasureSpec允许更大的大小。子类应该覆盖onMeasure(int, int)以提供更好的内容度量。

如果此方法被覆盖，则子类的责任是确保测量的高度和宽度至少为视图的最小高度和宽度（ getSuggestedMinimumHeight()和 getSuggestedMinimumWidth() ）。

Parameters
`widthMeasureSpec`	`int`: horizontal space requirements as imposed by the parent. The requirements are encoded with `View.MeasureSpec`.
`heightMeasureSpec`	`int`: vertical space requirements as imposed by the parent. The requirements are encoded with `View.MeasureSpec`.

verifyDrawable

Added in API level 16

boolean verifyDrawable (Drawable who)

如果你的视图子类正在显示它自己的Drawable对象，它应该覆盖这个函数，并且对于它显示的任何Drawable返回true。这样可以安排这些可绘制的动画。

重写此功能时，一定要调用超类。

Parameters
`who`	`Drawable`: The Drawable to verify. Return true if it is one you are displaying, else return the result of calling through to the super class.

Returns
`boolean`	boolean If true than the Drawable is being displayed in the view; else false and it is not allowed to animate.

Interfaces

Classes

Exceptions

Most visited

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MediaRouteButton

Summary

Inherited XML attributes

Inherited constants

Inherited fields

Public constructors

Public methods

Protected methods

Inherited methods

Public constructors

MediaRouteButton

MediaRouteButton

MediaRouteButton

MediaRouteButton

Public methods

getRouteTypes

jumpDrawablesToCurrentState

onAttachedToWindow

onDetachedFromWindow

performClick

performLongClick

setExtendedSettingsClickListener

setRouteTypes

setVisibility

showDialog

Protected methods

drawableStateChanged

onCreateDrawableState

onDraw

onMeasure

verifyDrawable