使用Swift的OSX状态栏应用程序

Question

我正在尝试使用swift为OSX编写状态栏应用程序。 Objective-C中的等效代码似乎工作并显示状态栏菜单，但以下代码不会：

import Cocoa

class AppDelegate: NSObject, NSApplicationDelegate {

    @IBOutlet var statusMenu: NSMenu

    func applicationDidFinishLaunching(aNotification: NSNotification?) {
        // Insert code here to initialize your application
    }

    func applicationWillTerminate(aNotification: NSNotification?) {
        // Insert code here to tear down your application
    }

    override func awakeFromNib() {
        var statusBar = NSStatusBar.systemStatusBar()
        var statusBarItem = statusBar.statusItemWithLength(CGFloat(NSVariableStatusItemLength))
        statusBarItem.menu = statusMenu
        statusBarItem.title = "TestApp"
    }

}

Answer 1

statusBarItem对awakeFromNib()的调用完成后，import Cocoa class AppDelegate: NSObject, NSApplicationDelegate { @IBOutlet var statusMenu: NSMenu var statusBarItem : NSStatusItem? override func awakeFromNib() { var statusBar = NSStatusBar.systemStatusBar() statusBarItem = statusBar.statusItemWithLength(CGFloat(NSVariableStatusItemLength)) statusBarItem!.menu = statusMenu statusBarItem!.title = "TestApp" } } var超出范围，您需要保留对它的引用。尝试这样的事情：

{{1}}