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Added in API level 3

Summary: Ctors | Methods | Protected Methods | Inherited Methods | [Expand All]

AppWidgetHost

public class AppWidgetHost
extends Object

java.lang.Object
↳	android.appwidget.AppWidgetHost

AppWidgetHost为AppWidget服务提供了与AppWidget服务的交互，例如主屏幕，它们想要将AppWidgets嵌入到他们的UI中。

Summary

Public constructors
`AppWidgetHost(Context context, int hostId)`

Public methods
`int`	`allocateAppWidgetId()` 在调用过程中获取主机的appWidgetId。
`final AppWidgetHostView`	`createView(Context context, int appWidgetId, AppWidgetProviderInfo appWidget)` 为给定的小部件创建AppWidgetHostView。
`static void`	`deleteAllHosts()` 删除有关您的软件包的所有主机的所有记录。
`void`	`deleteAppWidgetId(int appWidgetId)` 停止收听此AppWidget的更改。
`void`	`deleteHost()` 从AppWidget管理器中删除有关该主机的所有记录。
`final void`	`startAppWidgetConfigureActivityForResult(Activity activity, int appWidgetId, int intentFlags, int requestCode, Bundle options)` 代表调用者开始一个应用窗口小部件提供程序配置活动。
`void`	`startListening()` 开始接收您的AppWidgets的onAppWidgetChanged调用。
`void`	`stopListening()` 停止接收AppWidgets的onAppWidgetChanged调用。

Protected methods
`void`	`clearViews()` 清除已由此AppWidgetHost创建的视图列表。
`AppWidgetHostView`	`onCreateView(Context context, int appWidgetId, AppWidgetProviderInfo appWidget)` 调用来创建AppWidgetHostView。如果需要，重写以返回自定义子类。
`void`	`onProviderChanged(int appWidgetId, AppWidgetProviderInfo appWidget)` 当AppWidget的AppWidget提供者已升级为新的apk时调用。
`void`	`onProvidersChanged()` 当可用小部件集发生变化时调用（即。

Inherited methods

From class java.lang.Object

Public constructors

AppWidgetHost

Added in API level 3

AppWidgetHost (Context context, 
                int hostId)

Parameters
`context`	`Context`
`hostId`	`int`

Public methods

allocateAppWidgetId

Added in API level 3

int allocateAppWidgetId ()

在调用过程中获取主机的appWidgetId。

Returns
`int`	a appWidgetId

createView

Added in API level 3

AppWidgetHostView createView (Context context, 
                int appWidgetId, 
                AppWidgetProviderInfo appWidget)

为给定的小部件创建AppWidgetHostView。 AppWidgetHost保留一个指向新创建的视图的指针。

Parameters
`context`	`Context`
`appWidgetId`	`int`
`appWidget`	`AppWidgetProviderInfo`

Returns
`AppWidgetHostView`

deleteAllHosts

Added in API level 3

void deleteAllHosts ()

删除有关您的软件包的所有主机的所有记录。

Call this when initializing your database, as it might be because of a data wipe.
Call this to have the AppWidget manager release all resources associated with your host. Any future calls about this host will cause the records to be re-allocated.

deleteAppWidgetId

Added in API level 3

void deleteAppWidgetId (int appWidgetId)

停止收听此AppWidget的更改。

Parameters
`appWidgetId`	`int`

deleteHost

Added in API level 3

void deleteHost ()

从AppWidget管理器中删除有关该主机的所有记录。

Call this when initializing your database, as it might be because of a data wipe.
Call this to have the AppWidget manager release all resources associated with your host. Any future calls about this host will cause the records to be re-allocated.

startAppWidgetConfigureActivityForResult

Added in API level 21

void startAppWidgetConfigureActivityForResult (Activity activity, 
                int appWidgetId, 
                int intentFlags, 
                int requestCode, 
                Bundle options)

代表调用者开始一个应用窗口小部件提供程序配置活动。如果提供者位于其他配置文件中，请使用此方法，因为您不允许在其他配置文件中启动活动。您可以选择提供onActivityResult(int, int, android.content.Intent)返回的请求代码以及要传递给启动活动的选项包。

请注意，提供的应用程序小部件必须绑定此方法才能工作。

Parameters
`activity`	`Activity`: The activity from which to start the configure one.
`appWidgetId`	`int`: The bound app widget whose provider's config activity to start.
`intentFlags`	`int`: Optional intent flags.
`requestCode`	`int`: Optional request code retuned with the result.
`options`	`Bundle`

Throws
`ActivityNotFoundException`	If the activity is not found.

也可以看看：

getProfile()

startListening

Added in API level 3

void startListening ()

开始接收您的AppWidgets的onAppWidgetChanged调用。当你的活动变得可见时调用这个，例如从Activity的onStart（）。

stopListening

Added in API level 3

void stopListening ()

停止接收AppWidgets的onAppWidgetChanged调用。当你的活动不再可见时，例如从你的Activity的onStop（）中调用它。

Protected methods

clearViews

Added in API level 11

void clearViews ()

清除已由此AppWidgetHost创建的视图列表。

onCreateView

Added in API level 3

AppWidgetHostView onCreateView (Context context, 
                int appWidgetId, 
                AppWidgetProviderInfo appWidget)

调用来创建AppWidgetHostView。如果需要，重写以返回自定义子类。

Parameters
`context`	`Context`
`appWidgetId`	`int`
`appWidget`	`AppWidgetProviderInfo`

Returns
`AppWidgetHostView`

onProviderChanged

Added in API level 3

void onProviderChanged (int appWidgetId, 
                AppWidgetProviderInfo appWidget)

当AppWidget的AppWidget提供者已升级为新的apk时调用。

Parameters
`appWidgetId`	`int`
`appWidget`	`AppWidgetProviderInfo`

onProvidersChanged

Added in API level 17

void onProvidersChanged ()

当可用小部件集发生更改时调用（即包含包的小部件被添加，更新或删除，或者小部件组件已启用或禁用）。