swift 各种控件的简单使用

1，button

        let btn1 = UIButton(frame: CGRect(x: 40, y: 80, width: 100, height: 40))
        btn1.backgroundColor = UIColor.green
        btn1.setTitle("button", for: .normal)
        btn1.addTarget(self, action: #selector(nextPage), for: UIControlEvents.touchUpInside)
        //边框效果
        btn1.layer.cornerRadius = 8
        btn1.layer.masksToBounds = true
        self.view.addSubview(btn1)


    @objc func nextPage(){
        let vc = SecondViewController()
        self.navigationController?.pushViewController(vc, animated: true)
        
    }

2，label

        let label = UILabel(frame: CGRect(x: 20, y: 150, width: 200, height: 60))
        label.text = "hello,Xcode and Swift"
        label.font = UIFont(name: "Arial", size: 20)
        //标签文字的阴影颜色
        label.shadowColor = UIColor.lightGray
        //阴影横纵向的偏移距离
        label.shadowOffset = CGSize(width: 3, height: 3)
        label.textAlignment = NSTextAlignment.center
        label.textColor = UIColor.red
        label.backgroundColor = UIColor.yellow
        //换行方式，以空格为例
//        label.lineBreakMode = NSLineBreakMode.byWordWrapping
//        label.numberOfLines = 0
        self.view.addSubview(label)
        

3, view

        let view1 = UIView(frame: CGRect(x: 40, y: 120, width: 200, height:200))
        view1.backgroundColor = UIColor.brown;
        //纹理填充
//        let image = UIImage(named: "2")
//        let patternColor1 = UIColor.init(patternImage: image!)
//        view1.backgroundColor = patternColor1;
        //仿射变换
        var transform = view1.transform
        //对视图进行45度旋转
        transform = transform.rotated(by: 3.14/4)
        view1.transform = transform
        
//        let view2 = UIView(frame: CGRect(x: 40, y: 340, width: 100, height: 100))
        let view2 = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
        view2.backgroundColor = UIColor.purple;
        //渐变填充
        //1.新建一个渐变图层
        let gradientLayer = CAGradientLayer()
        gradientLayer.frame = view2.frame
        //2.设置渐变的起始颜色
        let fromColor = UIColor.purple.cgColor
        //3.设置中间颜色
        let midColor = UIColor.red.cgColor
        //4.设置结束颜色
        let toColor = UIColor.yellow.cgColor
        //5.将渐变层的颜色数组属性，设置为数组
        gradientLayer.colors = [fromColor,midColor,toColor]
        //6.将渐变图层添加到视图中
        view2.layer.addSublayer(gradientLayer)
        self.view.addSubview(view1)
//        self.view.addSubview(view2)
        
        view1.addSubview(view2);

4, imageView

        let imageView = UIImageView(image: UIImage(named: "2"))
        imageView.frame = CGRect(x: 40, y: 340, width: 100, height: 100)
        imageView.layer.cornerRadius = 50
//        imageView.layer.masksToBounds = true
        //添加阴影效果
        imageView.layer.shadowColor = UIColor.red.cgColor
        //阴影的横向纵向偏移值
        imageView.layer.shadowOffset = CGSize(width: 10, height: 10)
        //阴影透明度
        imageView.layer.shadowOpacity = 0.8
        //阴影半径大小
        imageView.layer.shadowRadius = 5
        imageView.isUserInteractionEnabled = true
        //手势单击
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(ViewController.singleTag))
        imageView.addGestureRecognizer(tapGesture)
        self.view.addSubview(imageView)

5, switch ,  alert

        let uiSwitch = UISwitch(frame: CGRect(x: 270, y: 80, width: 80, height: 40))
        uiSwitch.setOn(true, animated: true)
        uiSwitch.addTarget(self, action: #selector(switchChanged(uiSwitch:)), for: .valueChanged)
        self.view.addSubview(uiSwitch)



    @objc func switchChanged(uiSwitch:UISwitch){
        var message = "Turn on the switch"
        if !uiSwitch.isOn {
            message = "Turn off the switch"
        }
        let alert = UIAlertController(title: "alert", message: message, preferredStyle: UIAlertControllerStyle.alert)
        let action = UIAlertAction(title: "OK", style: .default, handler: nil)
        alert.addAction(action)
        self.present(alert, animated: true, completion: nil)
    }

6, stepper 步进对象

        let label1 = UILabel(frame: CGRect(x: 250, y: 165, width: 40, height: 30))
        label1.backgroundColor = UIColor.green
        label1.textAlignment = NSTextAlignment.center
        label1.text = "0"
        label1.tag = 1
        self.view.addSubview(label1)
        let stepper = UIStepper(frame: CGRect(x: 300, y: 165, width: 0, height: 0))
        stepper.backgroundColor = UIColor.lightGray
        stepper.sizeToFit()
        stepper.value = 0
        stepper.minimumValue = 0
        stepper.maximumValue = 10
        stepper.stepValue = 1
        stepper.addTarget(self, action: #selector(FirstViewController.valueChanged(stepper:)), for: .valueChanged)
        self.view.addSubview(stepper)
        

    @objc func valueChanged(stepper:UIStepper){
        let value = stepper.value
        let label = self.view.viewWithTag(1) as! UILabel
        label.text = "\(value)"
    }

7，textfield

        let field = UITextField(frame: CGRect(x: 20, y: 240, width: 150, height: 40))
        field.borderStyle = UITextBorderStyle.roundedRect
        field.placeholder = "请输入...."
        //关闭文本框对象的语法错误提示功能
        field.autocorrectionType = UITextAutocorrectionType.no
        field.returnKeyType = UIReturnKeyType.done
        field.clearButtonMode = UITextFieldViewMode.whileEditing
        field.keyboardType = UIKeyboardType.emailAddress
        //文本框的键盘为暗色主题
        field.keyboardAppearance = UIKeyboardAppearance.dark
        field.delegate = self
        self.view.addSubview(field)
        

8, 从下向上弹出的选择提示框

        let alert = UIAlertController(title: "Infomation", message: "what's your favorate?", preferredStyle: .actionSheet)
        let fishing = UIAlertAction(title: "Fishing", style: .default) { (alerts:UIAlertAction) in
            print("I like fishing")
        }
        let hunting = UIAlertAction(title: "Hunting", style: .destructive) { (alerts:UIAlertAction) in
            print("I like hunting")
        }
        let nothing = UIAlertAction(title: "Nothing", style: .cancel) { (alerts:UIAlertAction) -> Void in
            print("A Life of Nonsense")
        }
        alert.addAction(fishing)
        alert.addAction(hunting)
        alert.addAction(nothing)
        self.present(alert, animated: true, completion: nil)
        

9，环形活动指示器

    //首先添加一个全局 环形进度条对象，作为当前视图控制器类的属性
    var indicater:UIActivityIndicatorView!
    var p = true
    let indicateBtn = UIButton()
       
    indicater.startAnimating()
    self.view.addSubview(indicater)
    indicateBtn.frame = CGRect(x: 40, y: 320, width: 100, height: 40)
    indicateBtn.setTitle("stop", for: .normal)
    indicateBtn.backgroundColor = UIColor.orange
    indicateBtn.addTarget(self, action: #selector(FirstViewController.stopAnimation), for: UIControlEvents.touchUpInside)
    self.view.addSubview(indicateBtn)


    @objc func stopAnimation(){
        if p == true {
            p = !p
            indicater.stopAnimating()
            indicateBtn.setTitle("start", for: .normal)
        }else{
            p = !p
            indicater.startAnimating()
            indicateBtn.setTitle("stop", for: .normal)
        }
    }

10，datePicker

        let datePicker = UIDatePicker()
        datePicker.center = CGPoint(x: 200, y: 200)
        datePicker.tag = 1
        self.view.addSubview(datePicker)
        
        let rect = CGRect(x: 50, y: 360, width: 280, height: 44)
        let button = UIButton(type: .roundedRect)
        button.frame = rect
        button.backgroundColor = UIColor.lightGray
        button.setTitle("get date", for: UIControlState())
        button.addTarget(self, action: #selector(SecondViewController.getDate), for: .touchUpInside)
        self.view.addSubview(button)

 //MARK: - button 点击
    @objc func getDate(){
        let datePicker = self.view.viewWithTag(1) as! UIDatePicker
        //获取日期拾取的日期值
        let date = datePicker.date
        //新建一个日期格式化对象，用来实现日期的格式化
        let dateFormater = DateFormatter()
        //设置日期的格式
        dateFormater.dateFormat = "yyyy-MM-dd HH:mm"
        //将日期转换为指定格式的字符串
        let dateAndTime = dateFormater.string(from: date)
        let alert = UIAlertController(title: "information", message: dateAndTime, preferredStyle: .alert)
        let alertAction = UIAlertAction(title: "OK", style: .default, handler: nil)
        alert.addAction(alertAction)
        self.present(alert, animated: true, completion: nil)
    }
    @objc func nextPage(){
        self.navigationController?.popViewController(animated: true)
    }

11，webview

        let webView = UIWebView(frame: CGRect(x: 20, y: 80, width: 375, height: 200))
        let url = URL(string: "https://www.baidu.com")
        let request = URLRequest(url: url!)
        webView.loadRequest(request)
        self.view.addSubview(webView)

12, mkMapView

class ThirdViewController: UIViewController,MKMapViewDelegate {
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        self.view.backgroundColor = UIColor.purple
 
        //加载简单地图
//        self.mkMapView()
        //加载指定地理坐标的地图
//        self.mkMapView2()
//        //在地图上显示提示框
        self.mkMapView3()
    }

    @objc func mkMapView(){
        let map = MKMapView(frame: CGRect(x: 20, y: 300, width: 375, height: 250))
        //在地图中显示当前用户的地理位置
        map.showsUserLocation = true
        //设置地图视图的简单样式，为卫星图模式
        map.mapType = MKMapType.satellite
        self.view.addSubview(map)
        
    }
    @objc func mkMapView2(){
        let map = MKMapView(frame: CGRect(x: 20, y: 300, width: 375, height: 250))
        //在地图中显示当前用户的地理位置
        map.showsUserLocation = true
        //设置地图视图的显示样式，为卫星图样式
        map.mapType = MKMapType.satellite
        //通过设置经纬度来创建一个地理位置
        let coordingte2D = CLLocationCoordinate2D(latitude: 39.915352, longitude: 116.397105)
        //设置地图显示区域的缩放级别
        let zoomLevel = 0.02
        //初始化一个变量，表示地图对象的显示区域
        let region = MKCoordinateRegionMake(coordingte2D, MKCoordinateSpanMake(zoomLevel, zoomLevel))
        //设置地图对象的显示区域
        map.setRegion(map.regionThatFits(region), animated: true)
        self.view.addSubview(map)
        
    }
    @objc func mkMapView3(){
        let map = MKMapView(frame: CGRect(x: 20, y: 300, width: 375, height: 250))
        //在地图中显示当前用户的地理位置
        map.showsUserLocation = true
        //设置地图视图的显示样式，为卫星图样式
        map.mapType = MKMapType.satellite
        //通过设置经纬度来创建一个地理位置
        let coordingte2D = CLLocationCoordinate2D(latitude: 39.915352, longitude: 116.397105)
        //设置地图显示区域的缩放级别
        let zoomLevel = 0.02
        //初始化一个变量，表示地图对象的显示区域
        let region = MKCoordinateRegionMake(coordingte2D, MKCoordinateSpanMake(zoomLevel, zoomLevel))
        //设置地图对象的显示区域
        map.setRegion(map.regionThatFits(region), animated: true)
        //初始化一个点注释对象
        let objectAnnotation = MKPointAnnotation()
        //设置注释对象的地理位置
        objectAnnotation.coordinate = coordingte2D
        //设置注释对象的标题内容
        objectAnnotation.title = "Imperial Palace"
        //设置注释对象的子标题内容
        objectAnnotation.subtitle = "China's biggest palace."
        //将注释窗口对象，添加到地图中
        map.addAnnotation(objectAnnotation)
        self.view.addSubview(map)
    }

13, tableView

import UIKit

class ForeViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
    
    let array:[String] = ["我是谁","我从哪里来","要到哪里去"]
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        
        self.view.backgroundColor = UIColor.gray
        self.tableView()
    }
    @objc func tableView(){
        let tableView = UITableView(frame: CGRect(x: 20, y: 80, width: 375, height: 150),style:UITableViewStyle.plain)
        
        tableView.backgroundColor = UIColor.white
        tableView.delegate = self
        tableView.dataSource = self
        self.view.addSubview(tableView)
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cellid")
    }
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return array.count
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        var cell = tableView.dequeueReusableCell(withIdentifier: "cellid", for: indexPath)
        if (cell == nil) {
            cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "cellid")
        }
        cell.textLabel?.text = array[indexPath.row]

        return cell
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    

}