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我有 2 个分类：Game和ViewController（的子类NSViewController）那是Game类：

class Game {

required init(num : CGFloat, picName : String, gameName : String, description : String, windowHeight : CGFloat) {
    self.number = num
    self.pictureName = picName
    self.name = gameName
    self.desc = description
    self.height = windowHeight
}

var number : CGFloat
var pictureName : String
var name : String
var desc : String
var height : CGFloat

var image : NSImage {
    return NSImage(named: pictureName)!
}

var imageView : NSImageView {
    return NSImageView(frame: NSRect(x: 0, y: height - (110 * (number - 1)) - 100, width: 100, height: 100))
}

var nameField : NSTextField {
    return NSTextField(frame: NSRect(x: 110, y: height - (110 * (number - 1)) - 100, width: 300, height: 30))
}

var descField : NSTextField {
    return NSTextField(frame: NSRect(x: 110, y: height - (110 * (number - 1)) - 140, width: 300, height: 60))
}


func setImage() {
    imageView.image = image
}

func setNameField() {
    nameField.font = NSFont(name: "System", size: 15.0)
    nameField.stringValue = "Name"
    nameField.alignment = NSTextAlignment(rawValue: 2)!
    nameField.selectable = false
    nameField.editable = false
}

func setDescField() {
    descField.selectable = false
    descField.editable = false
    descField.stringValue = desc
    descField.font = NSFont(name: "System", size: 11.0)
}

}

在viewDidAppear我这样做：

var size = self.view.window?.frame.size
    var newGame = Game(num: 1, picName: "Bomb.png", gameName: "Bomber", description: "Just a simpla application", windowHeight: size!.height)
    newGame.setDescField()
    newGame.setImage()
    newGame.setNameField()
    println(newGame.descField.editable)
    self.view.addSubview(newGame.imageView)
    self.view.addSubview(newGame.descField)
    self.view.addSubview(newGame.nameField)

并且descField.editable总是true，即使我descField.editable = false在课堂上写函数Game。如何解决？

4

3 回答 3

1

编写代码的方式是，每次访问 nameField 时都会生成一个新的 NSTextField 实例，依此类推。

您想使用延迟实例化，添加 'lazy' 关键字很容易支持：

lazy var nameField : NSTextField {
     return NSTextField(frame: NSRect(x: 110, y: height - (110 * (number - 1)) - 100, width: 300, height: 30))
 }

或者更简单地说：

lazy var nameField = NSTextField(frame: NSRect(x: 110, y: height - (110 * (number - 1)) - 100, width: 300, height: 30))

对 image、imageView 和 descField 执行相同的操作。

于 2015-04-01T18:28:31.487 回答
1

我找到了解决方案。您需要将所有字段和图像视图声明为惰性变量并在以下位置使用它们init：

import Foundation
import Cocoa
import AppKit

class Game {

init(num : CGFloat, picName : String, gameName : String, description : String, windowHeight : CGFloat, sender : NSViewController) {
    self.number = num
    self.pictureName = picName
    self.name = gameName
    self.desc = description
    self.height = windowHeight
    imageView = NSImageView(frame: NSRect(x: 0, y: 0, width: 100, height: 100))
    nameField = NSTextField(frame: NSRect(x: 110, y: 60, width: 300, height: 30))
    descField = NSTextField(frame: NSRect(x: 110, y: 0, width: 300, height: 60))

    nameField.font = NSFont(name: "System", size: 15.0)
    nameField.stringValue = self.name
    nameField.alignment = NSTextAlignment(rawValue: 2)!
    nameField.selectable = false
    nameField.editable = false
    nameField.backgroundColor = sender.view.window?.backgroundColor
    nameField.bordered = false

    descField.selectable = false
    descField.editable = false
    descField.stringValue = desc
    descField.font = NSFont(name: "System", size: 11.0)
    descField.backgroundColor = NSColor.controlColor()
    descField.bordered = true
    descField.backgroundColor = sender.view.window?.backgroundColor

    imageView.image = NSImage(named: self.pictureName)!

    gameView = NSView(frame: NSRect(x: 0, y: /*height - (100 * num)*/ height - (120 * num), width: 600, height: 100))

    button = NSButton(frame: NSRect(x: 0, y: 0, width: 600, height: 100))
    button.tag = Int(number)
    button.action = nil

    var gesture = NSClickGestureRecognizer(target: sender, action: Selector("buttonPressed:"))
    gesture.numberOfClicksRequired = 1
    gesture.buttonMask = 0x1
    button.addGestureRecognizer(gesture)

    button.bezelStyle = NSBezelStyle(rawValue: 6)!
    button.transparent = true

    gameView.addSubview(nameField)
    gameView.addSubview(imageView)
    gameView.addSubview(descField)
    gameView.addSubview(button)

}

var number : CGFloat
var pictureName : String
var name : String
var desc : String
var height : CGFloat

lazy var button : NSButton = NSButton()
lazy var imageView : NSImageView = NSImageView()
lazy var nameField : NSTextField = NSTextField()
lazy var descField : NSTextField = NSTextField()
lazy var gameView : NSView = NSView()

}

然后你这样称呼这一切：

var newGame = Game(num: number, picName: "Bomb2.png", gameName: "Bomber", description: "Just a simple application", windowHeight: size!.height, sender: self)
self.view.addSubview(newGame.gameView)
于 2015-04-02T16:59:03.873 回答
0

怎么样：

var descField = NSTextField(frame: NSRect(x: 110, y: height - (110 * (number - 1)) - 140, width: 300, height: 60))
var editable: Bool {
    get {
        return descField.editable
    }
    set {
        descField.editable = newValue
    }
}

你可以使用你的游戏实例：

var newGame //......
newGame.editable = true
于 2015-04-01T18:52:10.560 回答