Question

我想为Mac OS X编写一个简单的菜单栏应用程序。用户只想在打开Safari时使用该应用程序。为了不会不必要地混淆菜单栏，我想隐藏并显示菜单栏图标，具体取决于Safari是否开放。

我的应用可能会注册一些通知吗？我能想象的唯一解决方法是轮询正在运行的进程并查看Safari是否已启动，但这似乎不是解决我问题的优雅方法......

Answer 1

NSWorkspaceDidLaunchApplicationNotification和NSWorkspaceDidTerminateApplicationNotification。（有相同的碳事件。）

Answer 2

使用kEventAppFrontSwitched in Carbon Event Manager在其他应用程序变为活动状态时收到通知。

Answer 3

// usleep(40500);

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

当Safari运行时，这将运行选择器-doStuff。如果您收到错误，请取消注释usleep()行。

Answer 4

遇到同样的问题，但多亏了JWWalker，文档和谷歌写了这段代码：

// 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
    }
}

Mac OS X - 监控应用程序启动？

4 个答案: