Sam*_*bel 5 macos notifications nsnotificationcenter nsworkspace swift
我正在制作一个mac应用程序,在该应用程序中,当计算机唤醒时,有必要做一些事情,但我无法使监听器正常工作。我觉得我已经尝试了一切。在AppDelegate.swift中,在函数applicationDidFinishLaunching中,我得到了:
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener", name: NSWorkspaceWillSleepNotification, object: nil)
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "wakeUpListener", name: NSWorkspaceDidWakeNotification, object: nil)
Run Code Online (Sandbox Code Playgroud)
在AppDelegate.swift内部,但在函数applicationDidFinishLaunching之外,我具有:
func sleepListener(aNotification : NSNotification) {
print("Sleep Listening");
}
func wakeUpListener(aNotification : NSNotification) {
print("Wake Up Listening");
}
Run Code Online (Sandbox Code Playgroud)
我尝试了许多不同方法的组合来解决此问题。我尝试侦听NSNotificationCenter.defaultCenter(),尝试将选择器更改为“ sleepListener:”和“ wakeUpListener:”,尝试从这两个函数中删除参数,但到目前为止没有任何效果。真正有趣的是,我还有另外两个侦听器可以完美地工作,它们分别是“ NSWorkspaceScreensDidSleepNotification”和“ NSWorkspaceScreensDidWakeNotification”。
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "screenSleepListener", name: NSWorkspaceScreensDidSleepNotification, object: nil)
Run Code Online (Sandbox Code Playgroud)
和
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "screenWakeUpListener", name: NSWorkspaceScreensDidWakeNotification, object: nil)
Run Code Online (Sandbox Code Playgroud)
引用功能
func screenSleepListener() {
print("Screen Sleep Listening");
}
func screenWakeUpListener() {
print("Screen Wake Up Listening");
}
Run Code Online (Sandbox Code Playgroud)
那么,这是我做错了吗?我应该提交错误报告吗?如果其他人可以在文件中运行此代码,则让他们的显示器和计算机进入睡眠状态,看看他们是否遇到相同的错误,那将非常有帮助。如果有人知道我做错了什么,那会更好。
先感谢您!
我发现这个帖子是很久以前的了。
从您的帖子中,我得到的印象是您以错误的顺序进行了两次排列。
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener", name: NSWorkspaceWillSleepNotification, object: nil)
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "wakeUpListener", name: NSWorkspaceDidWakeNotification, object: nil)
func sleepListener() {
print("Sleep Listening");
}
func wakeUpListener() {
print("Wake Up Listening");
}
Run Code Online (Sandbox Code Playgroud)
或者
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener:", name: NSWorkspaceWillSleepNotification, object: nil)
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "wakeUpListener:", name: NSWorkspaceDidWakeNotification, object: nil)
func sleepListener(aNotification : NSNotification) {
print("Sleep Listening");
}
func wakeUpListener(aNotification : NSNotification) {
print("Wake Up Listening");
}
Run Code Online (Sandbox Code Playgroud)
或者甚至更好
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener:", name: NSWorkspaceWillSleepNotification, object: nil)
NSWorkspace.sharedWorkspace().notificationCenter.addObserver(self, selector: "sleepListener:", name: NSWorkspaceDidWakeNotification, object: nil)
func sleepListener(aNotification : NSNotification) {
if aNotification.name == NSWorkspaceWillSleepNotification{
print("Going to sleep")
}else if aNotification.name == NSWorkspaceDidWakeNotification{
print("Woke up")
}else{
print("Some other event other than the first two")
}
}
Run Code Online (Sandbox Code Playgroud)
在哪里添加这些观察者也很重要。对我来说,他们都在应用程序委托中并且都工作。
希望有帮助
| 归档时间: |
|
| 查看次数: |
1149 次 |
| 最近记录: |