一定时间后隐藏 NSUserNotification

Question

目前，当我使用警报样式创建 NSUserNotification 时，除非我手动关闭它，否则它不会隐藏。

有没有办法让我在 2 秒后自动 close/hide 它说？

NSUserNotification代码供参考：

let notification:NSUserNotification = NSUserNotification()
notification.title = "Title"
notification.subtitle = "Subtitle"
notification.informativeText = "Informative text"

notification.soundName = NSUserNotificationDefaultSoundName

notification.deliveryDate = NSDate(timeIntervalSinceNow: 10)
notification.hasActionButton = false
let notificationcenter:NSUserNotificationCenter = NSUserNotificationCenter.defaultUserNotificationCenter()
notificationcenter.scheduleNotification(notification)

Answer 1

Blockquote Is there a way i can auto close/hide it say after 2 sec?

不，在 OSX 10.11 之前你没有任何这样的选择，可能在未来 Apple 可能会提供。

用户可以通过三种方式自定义 NSUserNotification 也称为 Growl 通知：

None
横幅
警报

您作为开发人员无法控制系统设置。这取决于用户启用或禁用以及选择他喜欢的通知类型。

如果您希望向用户显示任何警报，您可以创建自己的警报 window 并将其显示在那个角落。您可以设置一个计时器来关闭，或提供操作按钮以在需要时关闭它。

更新 1： Cocoa 提供 NSWindow & NSPanel（HUD 和普通面板）。您可以根据需要自定义 Window 或面板。检查是否有多个选项可以帮助您根据您的要求形成。

如果你不能得到，说你想要一个圆角然后你需要自定义 window/view 等

Answer 2

您可以使用 removeDeliveredNotification: 或 removeAllDeliveredNotifications 与计时器

// Clear a delivered notification from the notification center. If the notification is not in the delivered list, nothing happens.
- (void)removeDeliveredNotification:(NSUserNotification *)notification;

// Clear all delivered notifications for this application from the notification center.
- (void)removeAllDeliveredNotifications;

OS X（10.8 及更高版本）

Answer 3

其实做起来很简单，用NSObject的 performSelector:withObject:afterDelay: 方法。

因为您要在特定时间间隔后安排通知发送，所以您需要在发送前的初始延迟中添加关闭前的额外延迟。在这里，我将它们写为交付前 10 秒和解雇前 2 秒的常数：

let delayBeforeDelivering: NSTimeInterval = 10
let delayBeforeDismissing: NSTimeInterval = 2

let notification = NSUserNotification()
notification.title = "Title"
notification.deliveryDate = NSDate(timeIntervalSinceNow: delayBeforeDelivering)

let notificationcenter = NSUserNotificationCenter.defaultUserNotificationCenter()

notificationcenter.scheduleNotification(notification)

notificationcenter.performSelector("removeDeliveredNotification:",
    withObject: notification,
    afterDelay: (delayBeforeDelivering + delayBeforeDismissing))

对于 Swift 5，您可以使用以下内容：

let delayBeforeDelivering: TimeInterval = 10
let delayBeforeDismissing: TimeInterval = 2

let notification = NSUserNotification()
notification.title = "Title"
notification.deliveryDate = Date(timeIntervalSinceNow: delayBeforeDelivering)

let notificationcenter = NSUserNotificationCenter.default

notificationcenter.scheduleNotification(notification)

notificationcenter.perform(#selector(NSUserNotificationCenter.removeDeliveredNotification(_:)),
                with: notification,
                afterDelay: (delayBeforeDelivering + delayBeforeDismissing))

一定时间后隐藏 NSUserNotification

Hide NSUserNotification after certain time

cocoa

notifications

swift2