UserNotificationChangedTrigger 类

定义

命名空间:

Windows.ApplicationModel.Background

表示添加或删除 UserNotification 时触发的触发器。

public ref class UserNotificationChangedTrigger sealed : IBackgroundTrigger

/// [Windows.Foundation.Metadata.Activatable(Windows.ApplicationModel.Background.IUserNotificationChangedTriggerFactory, 196608, "Windows.Foundation.UniversalApiContract")]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 196608)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class UserNotificationChangedTrigger final : IBackgroundTrigger

[Windows.Foundation.Metadata.Activatable(typeof(Windows.ApplicationModel.Background.IUserNotificationChangedTriggerFactory), 196608, "Windows.Foundation.UniversalApiContract")]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 196608)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.MTA)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class UserNotificationChangedTrigger : IBackgroundTrigger

function UserNotificationChangedTrigger(notificationKinds)

Public NotInheritable Class UserNotificationChangedTrigger
Implements IBackgroundTrigger

继承

Object Platform::Object IInspectable UserNotificationChangedTrigger

属性

ActivatableAttribute ContractVersionAttribute ThreadingAttribute MarshalingBehaviorAttribute

实现

IBackgroundTrigger

Windows 要求

设备系列	Windows 10 Anniversary Edition (在 10.0.14393.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v3.0 中引入)

注解

用户通知侦听器要求先授予显式用户权限，然后才能使用它。 在尝试访问通知之前，请从 UI 线程调用 BackgroundExecutionManager.RequestAccessAsync 。

构造函数

UserNotificationChangedTrigger(NotificationKinds)

初始化 UserNotificationChangedTrigger 类的新实例。

另请参阅

• IBackgroundTrigger