这就是我所拥有的：
NSWindow子类
import Cocoa
import CoreLocation
class TweetWindow: NSWindow {
var locationManager: CLLocationManager!
var geoCoder: CLGeocoder!
@IBAction func tweetButtonPressed(sender:NSButton) {
}
func initialize() {
self.titleVisibility = NSWindowTitleVisibility.Hidden;
self.locationManager = CLLocationManager();
self.locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
self.locationManager.distanceFilter = 10;
self.geoCoder = CLGeocoder();
}
func windowWillShow() {
if !self.visible {
let systemAppearanceName = (NSUserDefaults.standardUserDefaults().stringForKey("AppleInterfaceStyle") ?? "Light").lowercaseString;
let systemAppearance = systemAppearanceName == "dark" ? NSAppearance(named: NSAppearanceNameVibrantDark) : NSAppearance(named: NSAppearanceNameVibrantLight);
self.appearance = systemAppearance;
self.locationManager.startUpdatingLocation();
}
}
func windowWillClose() {
self.locationManager.stopUpdatingLocation();
}
}
NSWindowController子类：
import Cocoa
class TweetWindowController: NSWindowController {
var tweetWindow: TweetWindow { return self.window as! TweetWindow; }
override func windowDidLoad() {
super.windowDidLoad()
self.tweetWindow.initialize()
// Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
}
override func showWindow(sender: AnyObject?) {
self.tweetWindow.windowWillShow()
super.showWindow(sender)
}
}
当然,我也有一个包含我窗口的.xib文件.它被称为“TweetWindow.xib”.
现在,到目前为止,这应该没问题.
在我的AppDelegate.swift中,我执行以下操作：
@NSApplicationMain
class AppDelegate: NSObject,NSApplicationDelegate {
var tweetWindowController:TweetWindowController!;
func applicationDidFinishLaunching(aNotification: NSNotification) {
// Insert code here to initialize your application
tweetWindowController = TweetWindowController(windowNibName: "TweetWindow");
}
func applicationWillTerminate(aNotification: NSNotification) {
// Insert code here to tear down your application
}
func showTweetWindowInternal() {
NSApp.activateIgnoringOtherApps(true);
tweetWindowController.showWindow(nil);
}
@IBAction func showTweetWindow(sender: AnyObject) {
showTweetWindowInternal();
}
@IBAction func quitApp(sender: AnyObject) {
NSApplication.sharedApplication().terminate(self);
}
}
我的问题如下：
当我尝试单击与IBAction相关联的按钮以显示窗口时,会抛出异常：
var tweetWindow：TweetWindow {return self.window as！ TweetWindow; }
它说致命错误：在展开Optional值时意外发现nil,因此窗口为零.
为什么那里的窗户没有？我试图过早地获取价值还是什么？
这是一些照片：
谢谢.
