[Swift] 创建一个对象

创建一个对象

先写一个People类

//

//  People.swift

//  Class

//

//  Created by YouXianMing on 15/3/18.

//  Copyright (c) 2015年 YouXianMing. All rights reserved.

//



import Foundation



class People {

    

    // 变量值

    var name : String

    var age  : Int

    

    // 初始化方法

    init() {

        name = "YouXianMing"

        age  = 10

    }



    // 类方法

    class func maxAge() -> Int {

        return 100

    }



    class func minAge() -> Int {

        return 0

    }

    

    

    // 普通方法

    func info(name : String, age : Int) -> String {

        return "age:\(age) + name:\(name)"

    }

    

    func subInfo() -> String {

        return "age:\(age) + name:\(name)"

    }

}

再写一个Student类继承至People类

//

//  Student.swift

//  Class

//

//  Created by YouXianMing on 15/3/18.

//  Copyright (c) 2015年 YouXianMing. All rights reserved.

//



import Foundation



class Student: People {

    

    var score : Float

    override init() {

        score = 100.0

        

        super.init()

    }

    

}

然后是控制器源码:

//

//  ViewController.swift

//  Class

//

//  Created by YouXianMing on 15/3/18.

//  Copyright (c) 2015年 YouXianMing. All rights reserved.

//



import UIKit





class ViewController: UIViewController {



    // 初始化变量

    var people   : People

    var studuent : Student = Student()

    

    

    // 必要的初始化

    required init(coder aDecoder: NSCoder) {

        // 调用初始化方法

        people      = People()

        people.name = "Y.X.M."

        people.age  = 20

        

        super.init(coder: aDecoder)

    }

    

    

    

    

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        

        println(people.info("YouXianMing", age: 28))

        println(people.subInfo())

        println(People.maxAge())

    }

}

一些需要注意的地方: