Question

我正在Mac上的Xcode中开发一个应用程序，并且想知道当mac从睡眠状态恢复时触发的事件。 AwakeFromNib似乎不起作用。

谢谢！

Answer 1

刚刚找到它：

- (void) receiveWakeNote: (NSNotification*) note
{
    NSLog(@"receiveSleepNote: %@", [note name]);
}

- (void) fileNotifications
{
    //These notifications are filed on NSWorkspace's notification center, not the default 
    // notification center. You will not receive sleep/wake notifications if you file 
    //with the default notification center.
     [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver: self 
                                                           selector: @selector(receiveWakeNote:) 
                                                               name: NSWorkspaceDidWakeNotification object: NULL];
}

Answer 2

对于swift 3：

func onWakeNote(note: NSNotification) {
    print("Received wake note: \(note.name)")
}

func onSleepNote(note: NSNotification) {
    print("Received sleep note: \(note.name)")
}

func fileNotifications() {
    NSWorkspace.shared().notificationCenter.addObserver(
        self, selector: #selector(onWakeNote(note:)),
        name: Notification.Name.NSWorkspaceDidWake, object: nil)

    NSWorkspace.shared().notificationCenter.addObserver(
        self, selector: #selector(onSleepNote(note:)),
        name: Notification.Name.NSWorkspaceWillSleep, object: nil)
}

对于swift 4：

@objc func onWakeNote(note: NSNotification) {
    ...
}

@objc func onSleepNote(note: NSNotification) {
    ...
}

func fileNotifications() {
    NSWorkspace.shared.notificationCenter.addObserver(
        self, selector: #selector(onWakeNote(note:)),
        name: NSWorkspace.didWakeNotification, object: nil)

    NSWorkspace.shared.notificationCenter.addObserver(
        self, selector: #selector(onSleepNote(note:)),
        name: NSWorkspace.willSleepNotification, object: nil)
}

Answer 3

您可以使用IORegisterForSystemPower()。

将呼叫者连接到Root Power Domain IOService以实现此目的接受睡眠＆amp;唤醒系统通知。才不是提供系统关闭和重启通知。

io_connect_t IORegisterForSystemPower (
    void *refcon, 
    IONotificationPortRef *thePortRef, 
    IOServiceInterestCallback callback, 
    io_object_t *notifier ) ;

查看Q:How can my application get notified when the computer is going to sleep or waking from sleep? How to I prevent sleep?

当Mac从睡眠状态恢复时会发生什么事？

3 个答案: