Mac OS X - 顯示器應用程序啓動？

Question

我想爲Mac OS X編寫一個簡單的菜單欄應用程序。當Safari打開時，用戶只想使用該應用程序。爲了不會不必要地混亂菜單欄，我想根據Safari是否打開來隱藏和顯示菜單欄圖標。

是否有可能會通知我的應用可以註冊？唯一的解決方法是我可以想象的是輪詢正在運行的進程，並查看Safari是否啓動，但這似乎不是一種優雅的方式來解決我的問題...

Answer 1

NSWorkspaceDidLaunchApplicationNotification和NSWorkspaceDidTerminateApplicationNotification。 （有碳當量活動。）

Answer 2

使用kEventAppFrontSwitched in Carbon Event Manager在另一個應用程序變爲活動狀態時。

Answer 3

使用此代碼：http://cl.ly/2LbB

// usleep(40500); 

ProcessNotif * x = [[ProcessNotif new] autorelease]; 
[x setProcessName: @"Safari"]; 
[x setTarget: self]; 
[x setAction: @selector(doStuff)]; 
[x start]; 

Safari瀏覽器中運行時，這將運行選擇-doStuff。如果出現錯誤，請取消usleep()行的註釋。

Answer 4

得到了同樣的問題，但由於JWWalker，文檔和谷歌寫了這個代碼：

// i need to register on button event, you can do it even in applicationDidFinishLaunching 
- (IBAction)Btn_LoginAction:(id)sender { 
    ... 
    NSNotificationCenter *center = [[NSWorkspace sharedWorkspace] notificationCenter]; 
    [center addObserver:self selector:@selector(appLaunched:) name:NSWorkspaceDidLaunchApplicationNotification object:nil]; 
    [center addObserver:self selector:@selector(appTerminated:) name:NSWorkspaceDidTerminateApplicationNotification object:nil]; 
} 

// remember to unregister 
- (void)ManageLogout:(NSInteger)aResult { 
    ... 
    NSNotificationCenter *center = [[NSWorkspace sharedWorkspace] notificationCenter]; 
    [center removeObserver:self name:NSWorkspaceDidLaunchApplicationNotification object:nil]; 
    [center removeObserver:self name:NSWorkspaceDidTerminateApplicationNotification object:nil]; 
} 

- (void)appLaunched:(NSNotification *)note { 
    [GTMLogger myLog:kGTMLoggerLevelDebug fmt:@"MainWinDelegate::appLaunched: %@ (%@)\n", [[note userInfo] objectForKey:@"NSApplicationBundleIdentifier"], [[note userInfo] objectForKey:@"NSApplicationProcessIdentifier"]]; 

    if ([[[note userInfo] objectForKey:@"NSApplicationBundleIdentifier"] isEqualToString:@"app.you.monitor.bundle.identifier"]) { 
     // do stuff 
    } 
} 

- (void)appTerminated:(NSNotification *)note { 
    [GTMLogger myLog:kGTMLoggerLevelDebug fmt:@"MainWinDelegate::appTerminated: %@ (%@)\n", [[note userInfo] objectForKey:@"NSApplicationBundleIdentifier"], [[note userInfo] objectForKey:@"NSApplicationProcessIdentifier"]]; 

    if ([[[note userInfo] objectForKey:@"NSApplicationBundleIdentifier"] isEqualToString:@"app.you.monitor.bundle.identifier"]) { 
     // do stuff 
    } 
}