swift学习笔记《1》从plist 获取json 进行解析。从本地加载转化位nsdata, 使用JSONSerira

1.UIButton

button 的初始化，点击事件
button 传入参数，和不传入参数市一样的，好像只写方法名

button 的属性

view.backgroundColor=UIColor.green
let  btn = UIButton(type: .system)
btn.setTitle("button", for: .normal)
btn.frame=CGRect(x: 100, y: 100, width: 100, height: 100)
btn.addTarget(self, action: #selector(btnClick), for: .touchUpInside)
view.addSubview(btn)

func btnClick(buttt:UIButton) {
print(buttt)        
}

2.UITableView

懒加载 lazy 关键字 + var 属性名 ：[集合中的类型] = { 设置return 类型 } ( )

mark 的标记 // MARK:懒加载

lazy var dataSoure: [String] = {
    return ["11","22","33","44","55"]
}()

tableView的属性跟OC类似，

class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
    override func loadView() {
        let tv = UITableView(frame: UIScreen.main.bounds)
        tv.dataSource=self
        tv.delegate=self
        view=tv
    }

tableView的代理设置实现代理，是在类后面逗号隔开

tableView的代理方法实现数据源方法写在extension 中，提高代码的可读性

// extension 想当于 OC中的category
extension ViewController : UITableViewDelegate, UITableViewDataSource {
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 5
    }
    //MARK: -数据源方法
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        var cell = tableView.dequeueReusableCell(withIdentifier: "cell2")
        if cell==nil {
            cell=UITableViewCell(style: .default, reuseIdentifier: "cell2")
        }
        cell?.textLabel?.text = dataSoure[indexPath.row]
        return cell!
    }
}

3.swift - TabBar

结构是tabBar 包括四个navigationController

tabBar.tintColor=UIColor.orange

addSelfChildViewController(childVC: BillListVC(), title: "账单", imageString: "home_tabbar_zd")

addSelfChildViewController(childVC: StatementVC(), title: "报表", imageString: "home_tabbar_bb")

addSelfChildViewController(childVC: InvoiceListVC(), title: "发票", imageString: "home_tabbar_fp")

addSelfChildViewController(childVC: PartnerVC(), title: "伙伴", imageString: "home_tabbar_hb")

private func addSelfChildViewController(childVC: UIViewController,title:String,imageString:String) {

    childVC.tabBarItem.image=UIImage(named: imageString)

    childVC.tabBarItem.selectedImage=UIImage(named: imageString.appending("_h"))

    childVC.tabBarItem.title=title

    childVC.title=title;   

    let nav = UINavigationController(rootViewController: childVC)

    addChildViewController(nav)

}

字符串用appdend ,拼接字符用**+**号

命名空间可以被修改


let nas = Bundle.main.infoDictionary! ["CFBundleExecutable"] as! String

从plist 获取json 进行解析。从本地加载转化位nsdata, 使用JSONSeriralation 转化为数组，打印数组中的字典
contentsOfFile 方法是可选类型，调用 JSONSerialization.jsonObject 方法是需要强制解包，

打印数组中的字典是时候，需要声明数组中的数据类型

let path = Bundle.main.path(forResource: "home.plist", ofType: nil)
if let filePath = path{
    do {
        let data = NSData(contentsOfFile: filePath)
        let diarry:Any = try JSONSerialization.jsonObject(with: data! as Data, options: JSONSerialization.ReadingOptions.mutableContainers)

        for adic in diarry as! [[String:String]] {
            print(adic)
        }
        print(diarry)
    } catch   {

        print("读取本地数据出现错误！")
    }
}

4.swift-基类未登录界面

抽取基类，控制器作为子类

判断登录状态，如果登录就加载子类视图，如果没有登录加载未登录界面
设置自定义视图，流出接口方法，进行切换图片和文字
首页转盘图片动画
登录注册的代理方法
app的appearance tabbar,navigaitionBar

上代码

三目运算符判断登录状态

let isHadLoggin :Bool = false
lazy var nologvvv : NoLogView = NoLogView.shareNoLogView()
override func loadView() {
    isHadLoggin ?  super.loadView(): setNoLogView()
}

根据控制器的不同，设置未登录页界面的图片和文字

func setUpNologViewInfo(imageString:String,title:String){

    rotationView.isHidden=true

    iconImageView.image=UIImage(named: imageString)

    messageLable.text=title

}

设置首页转轮动画

func addRotationAnimation(){      

    let animation = CABasicAnimation(keyPath: "transform.rotation.z")

    animation.fromValue = 0

    animation.toValue = M_PI * 2

    animation.repeatCount=MAXFLOAT

    animation.isRemovedOnCompletion = false

    animation.duration = 10   // 结束一次动画的时长

    rotationView.layer.add(animation, forKey: "homeRotation")

}

设置代理继承 NSObjectProtocol
设置代理属性使用weak 关键字，可选类型

使用不用判断代理直接使用

protocol  NoLogViewDelegate :NSObjectProtocol{
    func registButtonWillClick()

    func logginButtonWillClick()
}

weak var delegate:NoLogViewDelegate?
delegate?.registButtonWillClick()

5.自定义转场动画

转场动画

需要两个VC，一个VC，弹出另外一个VC
需要一个Animator 工具类，遵守UIViewControllerTransitioningDelegate 负责处理动画，和告诉谁是处理展现的控制器
需要一个控制器，继承 UIPresentationController，是Animator 工具类告诉代理，此控制器处理展现View

上代码

创建 HomePopOverAnimator，

private lazy var homeAnimator : HomePopOverAnimator = HomePopOverAnimator()

func changeAccoountBook(){
    let vc =  LeftChoseAccountBookVC()
    vc.modalPresentationStyle = .custom
    vc.transitioningDelegate = homeAnimator
    present(vc, animated: true, completion:nil)
}

HomePopOverAnimator 处理

HomePopOverAnimator 遵守UIViewControllerTransitioningDelegate 协议，实现协议方法
在代理中创建负责展现view的HomeUIPresentationVC ，继承自UIPresentationController

HomePopOverAnimator负责处理开始，结束动画，需要遵守UIViewControllerAnimatedTransitioning 协议

// MARK:- 自定义转场代理的方法
extension HomePopOverAnimator : UIViewControllerTransitioningDelegate {
    // 告诉代理，谁是处理展示的VC
    public func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source:                             UIViewController) -> UIPresentationController?{

    let homePrentVC = HomeUIPresentationVC(presentedViewController: presented, presenting: presenting)
        return  homePrentVC
    }

    // 告诉代理，谁处理开始动画
    public func animationController(forPresented presented: UIViewController, presenting: UIViewController, source:                                     UIViewController) -> UIViewControllerAnimatedTransitioning?{

        isPresented = true
        return self
    }

    // 告诉代理，谁处理结束动画
    public func animationController(forDismissed dismissed: UIViewController) ->UIViewControllerAnimatedTransitioning?{
        isPresented = false
        return self
    }

}

UIViewControllerAnimatedTransitioning 代理弹出和消失动画代理的方法，根据上下文处理动画形式

// MARK:- 弹出和消失动画代理的方法
extension HomePopOverAnimator:UIViewControllerAnimatedTransitioning{

    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval{
        return 1
    }

    func animateTransition(using transitionContext: UIViewControllerContextTransitioning){
        if isPresented {
            animationForStartAnimation(ransitionContext: transitionContext)
        }else{
            animationForEndAnimation(ransitionContext: transitionContext)

        }
    }
}

私有方法，开始动画，结束动画，transition 动画

// 开始动画
private func animationForStartAnimation(ransitionContext: UIViewControllerContextTransitioning){
    // 获取view，将view加到contenterView上，执行动画
    let containerView = ransitionContext.containerView
    let prentedView = ransitionContext.view(forKey: .to)
    containerView.addSubview(prentedView!)
    prentedView?.transform = CGAffineTransform.init(translationX: -containerView.bounds.size.width, y: 0)
    //        prentedView?.layer.anchorPoint = CGPoint(x: 0.5, y: 0)
    UIView.animate(withDuration: transitionDuration(using: ransitionContext), animations: {
        prentedView?.transform = CGAffineTransform.identity
    }) { (Bool) in
        ransitionContext.completeTransition(true)
    }
}

// 结束动画
private func  animationForEndAnimation(ransitionContext: UIViewControllerContextTransitioning){
    // 获取view， 执行消失动画
    let containerView = ransitionContext.containerView
    let dismissView  = ransitionContext.view(forKey: .from)
    UIView.animate(withDuration: transitionDuration(using: ransitionContext), animations: {
        dismissView?.transform = CGAffineTransform.init(translationX: -containerView.bounds.size.width, y: 0)
    }) { (Bool) in
        dismissView?.removeFromSuperview()
        ransitionContext.completeTransition(true)
    }
}

HomeUIPresentationVC处理

负责显示的View ，左侧抽屉一半view，下面一层蒙版，能响应点击消失

设置需要展现视图的大小，设置遮盖为button，响应点击事件

// 懒加载控件
lazy var coverBGView :UIButton = UIButton()
// 重写layoutsubviews 设置弹出视图的大小
override func containerViewWillLayoutSubviews(){
    super.containerViewWillLayoutSubviews()
    presentedView?.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width*0.6, height:                UIScreen.main.bounds.size.height)
    setCoverbgViews()
}

设置遮罩 frame和响应方法

extension HomeUIPresentationVC {
    func setCoverbgViews(){
        // 设置大小，插入到contenderView的最底层
        coverBGView.titleLabel?.text=""
        coverBGView.frame  = containerView!.bounds
        coverBGView.backgroundColor = UIColor.init(white: 0.8, alpha: 0.2)
        coverBGView.addTarget(self, action: #selector(tapCoverBgView), for: .touchUpInside)
        containerView?.insertSubview(coverBGView, at: 0)
    }
}

extension HomeUIPresentationVC {
@objc func tapCoverBgView(tap:UITapGestureRecognizer){
        presentedViewController.dismiss(animated: true, completion: nil)
    }
}

6.extension 使用类扩展增加方法

swift 中extension 相当于OC中的category 作为类的扩展
单独创建文件做类的扩展
在vc 中使用extension 作为 vc 的方法分类苹果推荐代理等方法写在extension里。
上代码 command + N 创建Swift 文件，名字为UIBarBarItem+category

为 UIBarButtonItem 增加一个类方法，创建item 的titleLable

extension UIBarButtonItem {
class func titleLableWithText(title:String)->UILabel{
        let lable = UILabel()
        lable.clipsToBounds = true
        lable.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width*0.5, height: 30)
        lable.font = UIFont.systemFont(ofSize: 16)
        lable.textColor = UIColor.init(red: 51, green: 51, blue: 51, alpha: 1)
        lable.text = title
        return lable
    }
}

7.创建二维码

1.创建滤镜
2.还原滤镜设置
3.设置数据存入数据
4.取出图片
5.增加中间的头像
6.设置高清图像

上代码如下

1.2.3.4 步骤

//1.创建滤镜
let filer = CIFilter.init(name: "CIQRCodeGenerator")

// 2.还原滤镜的设置
filer?.setDefaults()

// 3.设置数据
filer?.setValue(astring.data(using: .utf8), forKey: "inputMessage")

// 4.从滤镜中取出图片 CIImage
let fileCiImage = filer?.outputImage

增加中间的头像 UIGraphicsBegin

// 开启图像上下文
UIGraphicsBeginImageContext(bgImage.size)

// 绘制背景大小
bgImage.drawInRect(CGRect(origin: CGPointZero, size: bgImage.size))

// 绘制头像
let width:CGFloat = 50
let height:CGFloat = width
let x = (bgImage.size.width - width) * 0.5
let y = (bgImage.size.height - height) * 0.5
iconImage.drawInRect(CGRect(x: x, y: y, width: width, height: height))

// 取出绘制好的图像
let newImage = UIGraphicsGetImageFromCurrentImageContext()

// 关闭上下文
UIGraphicsEndImageContext()

// 返回头像
return newImage

绘制高清图像

/**
根据CIImage生成指定大小的高清UIImage
:param: image 指定CIImage
:param: size    指定大小
:returns: 生成好的图片
*/
private func createNonInterpolatedUIImageFormCIImage(image: CIImage, size: CGFloat) -> UIImage {
    let extent: CGRect = CGRectIntegral(image.extent)
    let scale: CGFloat = min(size/CGRectGetWidth(extent), size/CGRectGetHeight(extent))
    // 1.创建bitmap;
    let width = CGRectGetWidth(extent) * scale
    let height = CGRectGetHeight(extent) * scale
    let cs: CGColorSpaceRef = CGColorSpaceCreateDeviceGray()!
    let bitmapRef = CGBitmapContextCreate(nil, Int(width), Int(height), 8, 0, cs, 0)!        
    let context = CIContext(options: nil)
    let bitmapImage: CGImageRef = context.createCGImage(image, fromRect: extent)
    CGContextSetInterpolationQuality(bitmapRef,  CGInterpolationQuality.None)
    CGContextScaleCTM(bitmapRef, scale, scale);
    CGContextDrawImage(bitmapRef, extent, bitmapImage);
    // 2.保存bitmap到图片
    let scaledImage: CGImageRef = CGBitmapContextCreateImage(bitmapRef)! 
    return UIImage(CGImage: scaledImage)
}

8.扫描二维码

懒加载会话，输入，输出
判断会话能不能添加输入输出，
会话添加输入输出
设置输出数据类型
设置输出对象代理
开始扫描
添加预览图层