编辑代码

var myString = "Hello world!     -  swift.jsrun.net"
print(myString)
import UIKit
class CoreGraphUIView: UIView f
override func touchesBegan ( touches: Set <UITouch>,with event: UIEvent?) (self.backgroundColor = UiColor.red
print ("Began: \(touches) ")
}
override func touchesEnded (_touches: Set <UlTouch>, with event: UIEvent?) (self, backgroundColor = UIColor.lightGray
print ("Ended: \(touches)")
}
override func touchesMoved( touches: Set<UlTouch>, with event: UIEvent?)( self, backgroundColor = Uicolor.blue
print ("Moved: \ (touches) ")
}
}
class ViewController: UIViewController(
override func viewDidLoad (0 f
super.viewDidLoad (0
//Do any additional setup after loading the view.
let height = self.view.frame.size.height
let width = self.view.frame,size,width
let graphFrame = CGRect (x: 0, y: 0, width: width,height: height)
let graphView = CoreGraphUIView (frame: graphFrame)
graphView.backgroundColor = UIColor.white
self.view.addSubview (graphView)
}
}
//如果想获得触摸的对象及其坐标，程序如下：let touch:UlTouch = touches.first! as UITouch print(touch.location(in: view).x)
print(touch.location(in: view).y)
//5.2拥有自己的绘图类
//5.2.1定义一个Shape类 1 
class Shape 【
//名称
var name : String?
//边数
var sides : Int?
//左上用的位首坐标
Val origin: CGPoint?
//线条颜色
var lineColor : UIColor = UICOLOr.red
//填充颜色
var filColor: UICOLOr = UrCoLor.green//线条宽度
var linewiath : CGELoat = 2
//构造器涵数init
init (name: String, sides : Int, origin: CGPoint) (self, name = name
self.sides = sides
self.origin = origin
//自定义方法savHello
func sayhello () {
        print ( "Shape is \(name!), sides \(sides!), and originCord is (\(origin!.x), \(origin!.y))")
    }
}
//5.2.2实例化Shape类
// Viewcontro ler.swift
// ShapeDemo
//Created by Zhifeng Chen on 2020/8/4.
// Copyright 2020 Zhifeng Chen. All rights reserved.11
[COImport UInit
IColclass Shape {
//名称
var name : String?
//边数
var sides: Int?
//左上角的位置坐标
var origin : CGPoint?
//线条颜色
var linecolor : UIColor = UICOlor.red
//填充颜色
var fillColor : UIColor = UIColor.green
//线条笕度
var lineWidth: CGFloat = 2
//构造器函数 init
init (name : String, sides : Int, origin : CGPoint) (self.name = name
self.sides = sides
self,oriain = oriain
  }
    //自定义方法 sayHie11o
    func sayhello) {
        print("Shape is \(name!), sides \(sides!), and originCord is (\(originCord!.x）,\(origin!.y))")
    }
}
    ass ViewController: UIViewController {
override func viewDidLoad 0 {
super.viewDidLoad 0
//Do any additional setup after loading the view.
//此处调用Shape类，建立一个对象(实例)myShaple
let myShape = Shape(name:"BaseShape", sides: 0, origin: CGPoint(x：0, y： 0)myshape. sayHello 0
1
//5.2.3重载UIView中的Draw函数
// VievController .swift
//DrawMusic
//Created by Zhifeng Chen on 2020/8/4.
//Copyright 2020 Zhifeng Chen. All rights reserved.
import UIKit
class Shape I
//名称
var name : String?
//边数
var sides:Int?
//左上角的位置坐标
var origin: CGPoint?
//线条颜色
var lineColor: UIColor = UIColor.red
//线条宽度T
var lineWidth: CGFloat = 2
//构造器函数 init
init(name: String, sides : Int, origin: CGPoint)
self.name = name
self.sides = sides
self.origin = origin
//自定义方法 sayHe11o
func sayHello 0 (
print ("Shape: \(name!), sides \(sides!), origin ((origin!.x),\(origin!.y)) ")}
}
}
class CzfView : UIView f
//成员变量(属性)shape,共类型为Shape
var shape : Shape?
//重载UIView的draw方法
override func draw(_ rect: CGRect) ( I
//判断shape变量是否为空值nil
guard let s = shape else (
return
}
//不为空，则调用shape这个实例的方法
s.sayHello ()
}
}
class ViewController: UIViewController d
override func viewDidLoad0 (
super.viewDidLoad 0
//Do any additional setup after loading the view, typically from a nib.
//此处调用Shape类，建立一个对象(实例)myShape
let myShape = Shape(name:"BaseShape", sides: 0, origin: CGPOInt(x: 0. y: 0))
//此处建立了一个 Czfview 的买例myView
let width = self,view.frame.size,width
let height = self.view.frame.Size,height
let myView = CzfView (frame: CGreet (x: 0, y: 0, width: width,height: height))
//赋值给myView 中的成员(属性)shape
myview.shape = myShape
//显示mvView
self.view.addSubview(myview)
    }
}
//在Shape类中增加一个方法drawBezierPath0，其代码如下：
//自定义方法drawBezierPath用于四冬
func drawBezlerrathO (
//调用贝基尔曲线函数UIBezierPathO
let path = UIBezierPath0 I
//圆孤的中心点center，其坐标为(100,100)
let center ：CGPoint = CGPolnt (x: 100, y: 100)
//圆的半径长度radius，其值为80
let radius: CGFloat = 80
//生成一个园
Path.addare(withCenter:center, radius: radius, startAngle:0,endAngle: CGFLoat.p1*2, clockwise: true)
//线条宽度为5
path.lineWidth=5
//线条颜色为red红色
UIColor.red.setStroke0
//画出这个园
path.stroke0
}
//在CztView这个类中，修改draw方法，增加一行：
S.drawBezierrath0
//最后在ViewController的ViewDidLoad0中，清除背景色，不然会出现黑色背景，具体增加的代码如下：myview.backgroundColor=UIColor.clear
//清余背景色
//5.3绘制平面几何图形
//5.3.1常见图形绘制
//基类Shape
class Shape (
//名称
var name: String?
//左上角的位置坐标
var origin : CGPoint?
//线条颜色
var lineColor: UIColor? = UIColor.red
//填充颜色
var fil1color: UIColor? = UIColor .green
//线条宽度
var lineWidth : CGFloat? = 5
//构造器函数init
init(name : String, origin: CGPoint) (
self.name = name
self.origin = origin
)
//便利构造器函数init
convenience init(origin ： CGPoint) f
self.init(name:"Shape Bassclass", origin: origin)
//自定义方法drawBezierPath用于画图
func drawBezierPathOf
//向控制台输出信息
  print("Draw \(name!)")
    }
}
//线段类Line
class Line : Shape (
//线段的起点
var start : CGPoint?
//线段的终点
var end: CGPoint?
//构造器
init (name: String, origin: CGPoint, start : CGPoint, end: CGPoint) (super.init (name: name, origin: origin)
self.start = start
self.end = end
}
convenience init (start : cGPoint, end: cGPoint) {
self -init (name: "line", origin: start, start: start, end: end)
//重载 drawBezierPath 方法
override func drawBezierPath 0 {
//向控制台输出信息
print ("Draw \(name!)")
//建立一个UIBezierPath实例对象
let path = UIBezierPath)
//调用实例path的move方法移动
path.move (to: start!)
//调用实例path的addLine方法画线
path.addLine (to: end!)
//设首实例path的线条览度
 path.linewidth = linewidth!
        //设置实例path的线条终端样式.round或者.square
        path.lineCapStyle = .rouna
        //设置实例path的线条颜色
        linecolor?.setstroke()
        //画出线条
        path.stroke()
    }
}
//矩形类Rectangle
class Rectangle : Shape (
//左上角采用基类Shape中的属性origin
//宽度和高度， 般可以采用CGS1ze
var size : CGSize?
//构造器
inst(name: String, origin: CGPoint , size : CGSize) {
super.init (name: name, origin: origin)
self.size = size
convenience init (origin: CGPoint , size: CGSize){
self.init(name:"Rectangle", origin: origin, size; size)
1
//重載drawBezierPath万法
override func drawBezierPath 0{
//向控制台输出信息
let path = UrBezierPath(rect: CGRect (origin: origin!, size: size!))//设置买例path的线条宽度
path.lineWidth = lineWidth!
//设置买例path的线条顾色
lineColor?.setstroke ()
//画出线条
path.stroke ()
}
}
//在实际编程中，我们还需要画具有圆角的矩形
//那就采用UIKit中的UIBezierPath(roundedRect: CGRect, cornerRadius:CGFloat)
//方法来实现矩形的绘制，这样就要修改这个矩形类
class Rectangle : Shape (
//左上角采用基类 Shape 中的属性origin
//宽度和高度，一般可以采用CGSize
var size: CGsize?
//圆角的大小
var corner: CGFloat?
//构造器
init (name: String, origin: CGPoint, size: CGSize, corner : CGFloat) f
super.init (name: name, origin: origin)
self.size = size
self.corner = corner
convenience init (origin: CGPoint, size: CGSize, corner: CGFloat =0) f
self.init(name: "Rectangle", origin: origin, size: size, corner: corner)
)
//重载drawBezierPath方法
override func drawBezierPathO(
//向控制台输出信息
print ("Draw \(name!) ")
//建立一个UIBezierPath实例对象
let path = UIBezierPath(roundedRect : CGRect (origin : origin! size: size!), cornerRadius : corner!)
//设置实例path的线条宽度
path.lineWidth = linewidth!
        // 设置实例path的线条颜色
        lineColor?.setStroke ()
        //画出线条
        path.stroke ()
}
}
//调用代码如下：
let myRect = Rectangle(origin: start, size: CGSize (width: 150, height: 100),corner : 8.0)//则会生成一个带圆角的矩形。如果调用方法如下：
let myRect = Rectangle(origin: start, size: CGSize (width: 150, height: 100))
//则会生成一个不带圆角的普通矩形，因为在类的便利构造器中，corner默认数是0，也就是相当于圆角为0
//圆形类Circle
class Circle: Shape (
//圆心坐标 I
var center: CGPoint?
//半径长度
var raduis : CGFloat?
//椭圆的宽度和高度， 般可以采用CGSize
var size : cGsize?
//构造器
init(name: String, origin: CGPoint, center : CGPoint, raduis : CGFloat, size: CGSize) (super.init (name: name, origin: origin)
self.center = center
self.raduis = raduis
self.size = size
]
convenience init(center: CGPoint,raduis: CGFloat)(
let x =center.x- raduis
let y= centery-raduis
self.init(name: "Oval/Ellipse", origin: CGPoint (x:x, y:y),center:center, raduis: 0, size: size)
//重载dranBezierPath方法
override func drawBezierPath Of
//向控制台输出信息
print ("Draw\(name!)")
//建立一个UIBezierPath实例对象
let path = UIBezierPath(ovalln: CGRect(loriginorigin!, size:size!))
 //设置实例path的线条宽度
        path.linewidth = linewidth!
        //设置实例path的线条颜色
        linecolor?.setStroke ()
        //画出袋条
        path. stroke ()
    }
}

//多边形类Polygons
class Polygons : Shape (
//多边形主要是通过多个顶点相互连接来绘图
//顶点数组
var points : Array<CGPoint>?
init(name: String, origin: CGPoint, points: Array<CGPoint>) (
super,init(name: name, origin: origin)
self,points = points
)
convenience init (points : Array<CGPoint>)(
if points.count == 3 (
self.init(name: "Triangel", origin: points.first!, points:points)
else if points.count >= 3 (
self.init (name: "Polygons", origin: points.first!, points: points)
else I
let origin = CGPoint (x: 0, y; 0)
self.init (name:"Error, origin: origin, points: points")
1
1
//重載drawBezierPath方法
override func drawBezierPathO (
//向控制台输出信息
print ("Draw \(name!) ")
//如果不能识别，直接返问
 if(name == "Error"){
            return
        }
        //建立一个UIBezierPath买例对象
        let path = UIBezierPath
        //调用实例path的move方法移动
        pach.move (to: origin!)
        for each in points! {
            //调用买例path的addLine方法画线
            path.addLine (to: each)
        }
        path.close ()
        //设置实例path的线条宽庋
        path.lineWidth = lineWidth!
        //设置实例path的线条颜色
        lineColor?.setstroke ()
        //画出线条
        path.stroke ()
        path.fill ()
    }
}
//重载drawBezierPath方法画多边形
    override func drawBezierPath () {
        //向控制台输出信息
        print("Draw \(name!)")
        //如果不能识别，直接返回
        if (name =="Error") {
            return
        }
        //建立一个UIBezierPath实例对象
        path = UIBezierPath ()
        //调用实例path的move方法移动
        path?.move (to: origin!)
        for each in points! {
            //调用实例 path的addiine方法画线
            path?.addLine (to: each)
        }
        path?.close()
        //设置实例path的线条宽度
        path?.linewidth = 1inewidth！
        //设置实例path的线条颜色
        linecolor?.setstroke ()
        //画出线条
        path?.stroke ()
        path?.fi11()
    }
}
class Fivestar : Shape {
    //五角星和正五边形较为类似
    //中心坐标
    var center : CGPoint?
    //半径
    var radius : CGFloat?
    //旋转的角度
    var angel : CGFloat?
    //构造器
    init(name: string, origin: CGPoint, center : CGPoint, radius : CGFloat,angel : CGFloat, soundFile : String = "SO.m4a") {
        super.init (name: name, origin: origin, soundFile: soundFile)
        self.center = center
        self.radius = radius
        self.angel = angel
    }
    convenience init(center : CGPoint, radius: CFloat, angel: CGFloat = 0) {
        let x = center.x - radius
        let y = center.y - radius
        self.init (name: "FiveStar", origin: CGPoint (x:x, y:y) , center: center,radius: radius, angel: angel)
    }
    //自定义方法 drawBezierPath 用于画五角星
    override func drawBezierPath () {
        //向控制台输出信息
        print ("Drav \(name!)")
        //调用贝塞尔曲线西数 UIBezierPath()
        path = UIBezierPath()
        //五角星旋转顶点
        let i = 360 /angel!
        let xzAngle = CGFloat.pi*2/i
        let xzX = (center?.x)！- sin(xzAngle) *radius!
        let xzY = (center?.y)! - cos(xzAngle) *radius!
        let pl = CGPoint (x:xzX,y:xzY）
        path?.move(to: p1)
        let angle = CGFloat.pi*4/5
        for i in 1...5 {
            let x = (center?.x)! - sin(CGFloat (i)*angle+xzAngle)*radius!
            let y = (center?.y)！= cos(CGFloat (i)*angle+xzAngle)*radius!
            path?.addLine (to: CGPoint (x: x, y: y) )
        }
        path?.close ()
        if selectedFlag {
            let dashes: [CGFloat] = [1, 3]
            path?.setLineDash (dashes, count: dashes. count, phase: 0)
        }
        //线条宽度
        path?.lineWidth = lineWidth!
        //线条颜色为red 红色
        linecolor?.setstroke()
        //画出这个圆
        path?. stroke ()
    }
}

marile: soundstle
class czfview : UIview {
    //成员变量(属性)shapes,其类型为Arrav<shape>
    private var shapes : Array<Shape> = []
    //重载UIView的draw方法
    override fune draw( rect : cGRect) {
        //调用shapes这个数组中的每个实例的方法
        for s in shapes {
            s. drawBezierPath()
        }
    }
    //增加实例到数组shapes中
    func add (shape : Shape) {
        shapes.append (shape)
    }
    //触摸事件
    override func touchesBegan (_ touches: Set<UITouch>, with event: UIEvent?)  {
        //获得UITouch 集合
        let touch : UITouch = touches.first! as UIrouch

        //获得触摸所在位置的坐标
        let point = touch . location (in: self)
        //调用shapes这个数组中的每个实例的方法
        for s in shapes {
            //如果被选中
            if s.isSelected (point: point) {
                //声音播放
                s.playAudio ()
                //更新屏幕显示
                self.setNeedsDisplay()
            }
        }
    }
}

class ViewController: UIViewController {

    override func viewDidLoad () {
        super.viewDidLoad ( )
        //Do any additional setup after loading the view, typically from a nib.
        //此处调用 Fivestar 类，建立一个对象（实例)star
        //五角星的中心坐标为 (180,180)
        let starcenter = CGPoint (x: 180,y: 180)
        //五角星的半径设定了90，旅转角度为15度
        let star = FiveStar(center: starCenter, radius: 50, angel: 45)
        star.linecolor = UIColor.blue
        //此处调用Circle类，建立一个对象oval
        let ovalCenter = CGPoint (x: 100, y: 300)
        let ovalsize = CGsize (width : 100, height: 60)
        let oval = Circle (center: ovalCenter, size: ovalSize)
        //此处调用Rectangle类，建立一个对象rect
        let rectorigin = CGPoint(x: 60,y:50)
        let rectsize = CGSize(width: 100, height: 50)
        let rect = Rectangle(origin: rectOrigin, size: rectSize, corner: 6)
        rect.lineColor = UIColor.gray
        //此处建立了一个CzfView的实例myView
        let myView = Czfview (frame: CGRect (x: 0, y: 0, width: self.view.frame.size.width, height: self.view .frame .size.height))
        //清除背景色
        myView.backgroundColor = UIColor.clear
        //赋值给myViem中的成员变量（属性）shape
        myView.add (shape: star)
        myView.add (shape: oval)
        myView.add (shape: rect)
        //显示myview
        self.view.addSubview (myView)
    }
}
*触摸事件
11
// ViewController.swift
//GraphDemo
11
//Created by Zhifeng Chen on2020/8/4.
//Copyright@2020 Zhifeng Chen. All rights reserved.11
//
import UlKit
class CoreGraphUlView:UlView [
override func touchesBegan(_
touches:Set<UlTouch>, with
event: UIEvent?)
self.backgroundColor=UIColor. red
print("Began:\(touches)")
]
override func touchesEnded( touches: Set<UlTouch>, with
event:UlEvent?)[
self.backgroundColor=UIColor. lightGray
print("Ended:\(touches)")
]
override func touchesMoved( touches: Set<UlTouch>, with
event:UlEvent?)(
self.backgroundColor=UIColor. blue
print("Moved:\(touches)")
)
class ViewController:
UIViewControllerf
override func viewDidLoad()
super.viewDidLoad()
// Do any additional setup after loading the view.
let height =self.view.frame.size. height
let width=self.view.frame.size, width
let graphFrame·· CGRect(x:0, y:0, width: width, height: height) let
graphview=CoreGraphUlView(fram e:graphFrame)
graphview.backgroundColor= UIColor.white
self.view.addSubview(graphView)
*定义一个 Shape 类
class Shape
//名称
var name :string?
//边数
var sides:Int?
//左上角的位置坐标
var origin: CGPoint?
//线条颜色
var lineColor:UIColor=UlColor.red//填充颜色
var fillColor:UIColor=UIColor.green//线条宽度
var lineWidth ;CGFloat= 2
//构造器画数 init
init(name: String, sides: Int, origin：CGPoint)f
self.namemname self.sides-sides self.origin m origin
]
//自定义方法 sayHello
func sayhello()
print("Shape is \(name!),sides \(sides!), and originCord
is(\(origin!.x),\(origin!.y)) ")
]]
*实例化 Shape 类
11
// ViewController.swift
// ShapeDemo
11
// Created by Zhifeng Chen on2020/8/4.
// Copyright 2020 Zhifeng Chen. All rights reserved.
import Ulkit
class Shape f
//名称
var name: String?
//边数
var sides : Int?
//左上角的位置坐标
var origin:CGPoint?
//线条颜色
var lineColor: UIColor= UIColor.red//填充颜色
var fillColor:UlColormUlcolor.green//线条宽度
var lineWidth:CGFloat= 2
//构造器函数 init
init(name: String,sides:Int, origin：CGPoint)[
self.name=name
self.sides =sides
self.originmorigin]
#myjson.js
module.exports=function()f var data =(users:[]]
// Create 1000 users
for (vari=0;i<1000; i++) 
data.users.push(f id:i,name: 'user'+ ij)
)
return data
]
# news.js
let Mock =require('mockjs');
let Random =Mock.Random; module.exports=function()( var data=(
news: []
];
var images =[1,2,3].
map(x=>Random.
image('200×100', Random.color()Random.word(2,6)));
for (vari=0;i<100; i++)
var content = Random.
cparagraph(0,10);
data.news.push(f
id: i,
title:Random.cword(8,20),
desc:content.substr(0,40),
tag:Random.cword(2,6),
views:Random.integer(100,5000)images:images.slice(0,Random.integer(1,3))
3)
]
return data
}
import UlKit
import Foundation
//url 为 MOCKMOCK 服务器的网址if let url = URL(string: "http://
localhost:3004/news")[
URLSession.shared.
dataTask(with:url)((data,
response, error) in
if error != nil (
print("Network errors")
]
else 
let rs = String(data: data!,
encoding: String.Encoding.utf8)!print(rs)
if let json = try? JSONSerialization. jsonObject(with:data!,
options:.allowFragments)(
print(json)
I]
)
.resume()
〕
func sessionGetData()(
//创建 URL 对象
let uriString ="http://www.
tuling123.com/"
let url = URL(string:urlString)
//创建请求对象
let request = URLRequest(url: url!) let session =URLSession.shared let dataTask = session.
dataTask(with: request,
completionHandler:((data,
response, error) -> Void in
if error != nilf
print(error.debugDescription)
jelse
let str = String(data: data!,
encoding:
String.Encoding.utf8)
print(str!)
]
]) as URLSessionTask
//使用 resume 方法启动任务
dataTask.resume()
fune sessionDownloadlmage()//下载地址
let url = URL(string: "http://hangge. com/blog/images/logo.png")
//请求
let request = URLRequest(url: url!) let session =URLSession.shared//下载任务
let downloadTask = session.
downloadTask(with:request,
completionHandler:(
(location:URL?,response:
URLResponse?, error:Error?)
-> Void in
//输出下载文件原来的存放目录
print("location:\(String(describing: location))")
//location 位置转换
let locationPath = location? path// 获取当前时间
let now = NSDate()