Question

我目前正在开发一个“仅菜单栏”项目，我需要在菜单栏应用程序的子菜单中列出所有已安装的卷。我想出了如何打印（）所有已安装的卷，但我需要帮助子菜单（没有.xib或.storyboard工作）这是我的“listVolumes func”

    func listVolumes(sender: NSMenuItem) {
    let keys = [NSURLVolumeNameKey, NSURLVolumeIsRemovableKey, NSURLVolumeIsEjectableKey]
    let paths = NSFileManager().mountedVolumeURLsIncludingResourceValuesForKeys(keys, options: [])
    if let urls = paths {
        for url in urls {
            if let components = url.pathComponents
                where components.count > 1
                    && components[1] == "Volumes" {
                print(url)
            }
        }
    }
}

以下是“菜单栏应用”的代码

    let statusItem = NSStatusBar.systemStatusBar().statusItemWithLength(-2)

func applicationDidFinishLaunching(aNotification: NSNotification) {

    if let button = statusItem.button {
        button.image = NSImage(named: "StatusBarButtonImage")
    }
    let menu = NSMenu()

    menu.addItem(NSMenuItem(title: "Volumes", action: Selector("volumes:"), keyEquivalent: ""))
    menu.addItem(NSMenuItem.separatorItem())
    menu.addItem(NSMenuItem(title: "Help", action: Selector("help:"), keyEquivalent: ""))
    menu.addItem(NSMenuItem.separatorItem())
    menu.addItem(NSMenuItem(title: "Quit", action: Selector("terminate:"), keyEquivalent: "q"))

    statusItem.menu = menu

}

所以我的问题是，如何创建一个包含所有已安装驱动器的子菜单（仅以编程方式）

Answer 1

您必须将子菜单设置为volumes菜单项，例如

let volumesMenuItem = NSMenuItem(title: "Volumes", action: Selector("volumes:"), keyEquivalent: "")
menu.addItem(volumesMenuItem)
let volumesMenu = NSMenu(title: "Volumes")
volumesMenuItem.submenu = volumesMenu

我建议您从listVolumes()函数返回一个名称数组，然后您可以将菜单项添加到volumesMenu，假设volumes包含名称

for volumeName in volumes {
    volumesMenu.addItem(NSMenuItem(title: volumeName, action: Selector("selectVolume"), keyEquivalent: ""))
}

列出菜单栏子菜单中的所有已安装的卷（仅以编程方式）

1 个答案: