Cocoa Mac:从AppDelegate创建窗口

时间:2016-10-05 14:21:48

标签: swift macos cocoa

我正在寻找一个从AppDelegate创建窗口的简单(以及Mac特定的)示例。我的程序有一个登录页面,可能需要也可能不需要在应用启动时显示,具体取决于用户是否已经登录。

到目前为止,我的AppDelegate的applicationDidFinishLaunching看起来像这样:

func applicationDidFinishLaunching(_ aNotification: Notification) {
    // Insert code here to initialize your application

    let main = NSStoryboard(name : "Main", bundle: nil).instantiateController(withIdentifier: "MainWindow") as! NSWindowController

    main.window?.becomeFirstResponder()

    let mainVc = NSStoryboard(name:"Main", bundle: nil).instantiateController(withIdentifier: "MainViewController") as! ViewController
    main.window?.contentViewController = mainVc
}

但是当我运行应用程序时没有任何反应。我应该注意到,我已经取消了主界面的设置'应用设置的属性。如果我没有取消它,那么我想要的两个版本的窗口出现了,这表明我几乎正确使用上述。

我错过了什么?

1 个答案:

答案 0 :(得分:2)

您需要在applicationDidFinishLaunching方法中声明您的NSWindowController变量main。您还需要调用makeKeyAndOrderFront(nil)而不是becomeFirstResponder:

import Cocoa

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {

    var main: NSWindowController!

    func applicationDidFinishLaunching(_ aNotification: Notification) {
        // Insert code here to initialize your application

        main = NSStoryboard(name : "Main", bundle: nil).instantiateController(withIdentifier: "MainWindow") as! NSWindowController
        let mainVc = NSStoryboard(name:"Main", bundle: nil).instantiateController(withIdentifier: "MainViewController") as! ViewController
        main.window?.contentViewController = mainVc
        main.window?.makeKeyAndOrderFront(nil)

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