目錄
1、ATS配置
2淑翼、狀態(tài)欄全局變亮白
3腐巢、懶加載
4、內(nèi)存泄漏
5玄括、常用的第三方庫(kù)
6冯丙、反射機(jī)制
7、運(yùn)行時(shí)
8遭京、MD5加密
9胃惜、聊天界面
10、多線程GCD
11哪雕、 啟動(dòng)圖尺寸大小
12 船殉、權(quán)限

1、ATS配置

App 網(wǎng)絡(luò)http請(qǐng)求已被禁止斯嚎，需要在Info.plist文件配置利虫。

   <key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

2、狀態(tài)欄全局變亮白

 UIApplication.shared.statusBarStyle = .lightContent

還需要在Info.plist文件配置：

<key>UIViewControllerBasedStatusBarAppearance</key>
    <false/>

3堡僻、懶加載

lazy var mainScrollView:UIScrollView = {()-> UIScrollView in
        let scrollView = UIScrollView()
        return scrollView
    }()

4糠惫、內(nèi)存泄漏

解決閉包循環(huán)引用[weak self]

//ESPullToRefresh上拉加載
 var footer: ESRefreshProtocol & ESRefreshAnimatorProtocol
 footer = ESRefreshFooterAnimator.init(frame: CGRect.zero) 
 homeTableView.es.addInfiniteScrolling(animator: footer) { [weak self] in
         self?.pageArray[tag]+=1
         self?.initData(tag:tag+1,page:(self?.pageArray[tag]) ?? 1)
     }

Timer釋放內(nèi)存

var timer:Timer?
 override func viewDidLoad() {
        super.viewDidLoad()
        if #available(iOS 10.0, *) {
            timer  = Timer.scheduledTimer(withTimeInterval: 1, repeats: true, block: { (timer)  in
                 print("定時(shí)器執(zhí)行")
            })
        } else {
            timer=Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(write), userInfo: nil, repeats: true)
        }
         timer?.fire() //啟動(dòng)定時(shí)器
        //timer?.fireDate=Date.distantFuture //暫停定時(shí)器
}
@objc func write(){
       print("定時(shí)器執(zhí)行")
 }
    
deinit{
      timer?.invalidate()
      timer=nil
      print("銷毀定時(shí)器")
   }

CADisplayLink釋放內(nèi)存

let displayLink = CADisplayLink.init(target: self, selector: #selector(write))
displayLink?.frameInterval = 1
displayLink?.add(to: .current, forMode: .commonModes)
//displayLink?.isPaused=false//暫停或開(kāi)始定時(shí)器

//銷毀定時(shí)器必須先執(zhí)行(deinit在這之后執(zhí)行)
displayLink?.invalidate()
//然后再執(zhí)行
displayLink=nil

WKWebView釋放內(nèi)存

//遵守WKScriptMessageHandler協(xié)議
 webView = WKWebView.init(frame: self.view.bounds)
 let request=URLRequest.init(url: URL.init(string: "http://www.reibang.com/u/665ff1bc9038")!)
 webView?.load(request)
 webView?.configuration.userContentController.add(self, name: "Delete")
 self.view.addSubview(webView!)

//實(shí)現(xiàn)代理方法
func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        if "Delete" == message.name {
        }
    }

//銷毀WKWebView對(duì)象必須先執(zhí)行(deinit在這之后執(zhí)行)
webView?.configuration.userContentController.removeScriptMessageHandler(forName: "Delete")
//然后再執(zhí)行
webView=nil

NotificationCenter通知

//發(fā)送通知
let center = NotificationCenter.default
center.post(name: NSNotification.Name(rawValue: "Notification"), object: "傳單個(gè)值")
center.post(name: NSNotification.Name(rawValue: "Notification_More"), object: nil, userInfo: ["name":"星星編程","experience":"3年"])

//接收通知
    var  center = NotificationCenter.default
    var observer:NSObjectProtocol?
    
    override func viewDidLoad() {
        super.viewDidLoad()
 
        center.addObserver(self, selector: #selector(receive), name: NSNotification.Name(rawValue: "Notification"), object: nil)
        
      observer =  center.addObserver(forName: NSNotification.Name(rawValue: "Notification_More"), object: nil, queue: OperationQueue.main) { (notification) in
            print(notification.userInfo ?? "")
        }
  
    }
 
    @objc func receive(notification:Notification){
        print("接收到消息：" + "\(notification.object ?? "")")
    }
  
    deinit {
        //center.removeObserver(self)//銷毀所以通知中心的監(jiān)聽(tīng)钉疫，不能銷毀NSObjectProtocol的監(jiān)聽(tīng)
        center.removeObserver(self, name: NSNotification.Name(rawValue: "Notification"), object: nil)
       // center.removeObserver(observer ?? self)//銷毀NSObjectProtocol的監(jiān)聽(tīng)
        center.removeObserver(observer ?? self, name: NSNotification.Name(rawValue: "Notification_More"), object: nil)
        
        print("移除通知監(jiān)聽(tīng)")
    }

5硼讽、常用的第三方庫(kù)

網(wǎng)絡(luò)請(qǐng)求和生成Model的框架：AlamofireObjectMapper
首頁(yè)圖片輪播框架：GLLoopView
圖片加載框架：Kingfisher
上拉刷新下拉加載框架：ESPullToRefresh

6、反射機(jī)制

Mirror

class Book : NSObject {
    var name:String?   //書(shū)名
    var author:String? //作者
    var pages:Int?     //頁(yè)數(shù)
}

        let book = Book()
        book.name = "簡(jiǎn)書(shū)"
        book.author = "星星編程"
        book.pages = 100
       
        //是否是Book類的一個(gè)實(shí)例或?qū)嵗娜魏晤惱^承自Book類
        if book.isKind(of: Book.classForCoder()){
            print("book是Book的一個(gè)實(shí)例")
        }
        
       //是否是Book類的一個(gè)實(shí)例
        if book.isMember(of: Book.classForCoder()) {
            print("book是Book的一個(gè)實(shí)例")
        }

      //判斷self是否實(shí)現(xiàn)了aa方法
        if self.responds(to: #selector(aa)){
            print("aa")
        }

      //發(fā)送一個(gè)消息到指定消息的接收器,并返回結(jié)果
       self.perform(#selector(aa))
        
        //將對(duì)象進(jìn)行反射
        let mirror = Mirror(reflecting: book)
        print("對(duì)象類型：\(mirror.subjectType)")
        print("對(duì)象子元素個(gè)數(shù)：\(mirror.children.count)")
        
        print("--- 對(duì)象子元素的屬性名和屬性值分別如下 ---")
        for case let (key?, value) in mirror.children {
            print("屬性：\(key)     值：\(value)")
        }

NSClassFromString

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
 
        window = UIWindow()
        window?.backgroundColor = UIColor.white

        //設(shè)置跟控制器要添加命名空間（默認(rèn)是項(xiàng)目名稱陌选，最好不要有特殊符號(hào)）
        let clsName = "StarsSwift.ViewController"
        let cls = NSClassFromString(clsName) as? UIViewController.Type
        //使用類來(lái)創(chuàng)建視圖控制器
        let vc = cls?.init()

        window?.rootViewController = vc
        window?.makeKeyAndVisible()
        return true
    }

7理郑、運(yùn)行時(shí)

//通過(guò)KVC給對(duì)象賦值
 let book = Book(dict: ["name" : "簡(jiǎn)書(shū)" , "author" : "星星編程" ,"introduction" : "假如編程欺騙了你蹄溉，你依舊義無(wú)反顧的熱愛(ài)編程，這才叫真愛(ài)您炉。" ])
     
      print("書(shū)名：\(book.name ?? "") 作者：\(book.name ?? "") 簡(jiǎn)介：\(book.introduction ?? "")")

       //打印通過(guò)運(yùn)行時(shí)獲取類的屬性
        print(Book.propertyList())

//書(shū)類
class Book : NSObject{
    @objc var name:String?   //書(shū)名
    @objc var author:String? //作者
    @objc var introduction:String?  //簡(jiǎn)介
    
    init(dict:[String:Any]) {
        super.init()
        self.setValuesForKeys(dict)
    }
    
    override func setValue(_ value: Any?, forUndefinedKey key: String) {
        
    }
    
    class func propertyList()->[String]{
        
        var count:UInt32=0
        //獲取類的屬性列表柒爵，返回屬性列表數(shù)組
        let list=class_copyPropertyList(self, &count)
        var propertyList=[String]()
        for i in 0..<Int(count){
            
            guard let pty = list?[i]
              else{
                    continue
            }
            let cName=property_getName(pty)
            
            guard let name = String.init(utf8String: cName) else{
                continue
            }
            
            propertyList.append(name)
            
        }
        free(list)
        
        return propertyList
    }
}

8、MD5加密

//
//  String+MD5.swift
//  StarsSwift
//
//  Created by 李永飛 on 2017/10/26.
//  Copyright ? 2017年 李永飛. All rights reserved.
//

import Foundation


extension String  {
    var md5: String {
        if let data = self.data(using: .utf8, allowLossyConversion: true) {
            
            let message = data.withUnsafeBytes { bytes -> [UInt8] in
                return Array(UnsafeBufferPointer(start: bytes, count: data.count))
            }
            
            let MD5Calculator = MD5(message)
            let MD5Data = MD5Calculator.calculate()
            
            var MD5String = String()
            for c in MD5Data {
                MD5String += String(format: "%02x", c)
            }
            return MD5String
            
        } else {
            return self
        }
    }
}

9赚爵、聊天界面

消息列表.png

好友列表.png

聊天界面.png

10棉胀、多線程GCD

加載網(wǎng)絡(luò)數(shù)據(jù)及時(shí)更新UI

 DispatchQueue.global().async {
            //加載網(wǎng)絡(luò)數(shù)據(jù)
            DispatchQueue.main.async(execute: {
                //更新UI
            })
        }

延遲加載

 DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 1, execute: {
             //更新UI
        })

DispatchGroup

 let group = DispatchGroup()
 let queueTask1 = DispatchQueue(label: "book")
 queueTask1.async(group: group) {
       print("任務(wù)1" )
  }
 let queueTask2 = DispatchQueue(label: "video")
 queueTask2.async(group: group) {
      print("任務(wù)2" )
 }
 group.notify(queue: DispatchQueue.main) {
      print("任務(wù)完成" )
 }

DispatchWorkItem

let queueTask = DispatchQueue(label: "queueTask", attributes: .concurrent)
let workItem1 = DispatchWorkItem {
       print("WorkItem1")
 }
let workItem2 = DispatchWorkItem {
       print("WorkItem2")
 }
queueTask.async(execute: workItem1)
queueTask.async(execute: workItem2)

DispatchGroup和DispatchWorkItem一起使用

 let group = DispatchGroup()
 let queueTask1 = DispatchQueue(label: "book")
 queueTask1.async(group: group) {
       print("任務(wù)1" )
  }
 let queueTask2 = DispatchQueue(label: "video")
 queueTask2.async(group: group) {
      print("任務(wù)2" )
 }
let queueTask = DispatchQueue(label: "queueTask", attributes: .concurrent)
let workItem1 = DispatchWorkItem {
       print("WorkItem1")
 }
let workItem2 = DispatchWorkItem {
       print("WorkItem2")
 }
 queueTask.async(group: group, execute: workItem1)
 queueTask.async(group: group, execute: workItem2)
 group.notify(queue: DispatchQueue.main) {
      print("任務(wù)完成" )
 }

11、 啟動(dòng)圖尺寸大小

iPhone Portrait iOS 11+ iPhone X （1125×2436） @3x

iPhone Portrait iOS 8,9-Retina HD 5.5 （1242×2208） @3x
iPhone Portrait iOS 8,9-Retina HD 4.7 （750×1334） @2x

iPhone Portrait iOS 7,8,9-2x （640×960） @2x
iPhone Portrait iOS 7,8,9-Retina 4 （640×1136） @2x

iPhone Portrait iOS 5,6-1x （320×480） @1x
iPhone Portrait iOS 5,6-2x （640×960） @2x
iPhone Portrait iOS 5,6-Retina4 （640×1136） @2x

12冀膝、 權(quán)限

通訊錄 NSContactsUsageDescription
麥克風(fēng) NSMicrophoneUsageDescription
相冊(cè) NSPhotoLibraryUsageDescription
相機(jī) NSCameraUsageDescription
添加圖片到相冊(cè) NSPhotoLibraryAddUsageDescription
持續(xù)獲取地理位置 NSLocationAlwaysUsageDescription
使用時(shí)獲取地理位置 NSLocationWhenInUseUsageDescription
藍(lán)牙 NSBluetoothPeripheralUsageDescription
語(yǔ)音轉(zhuǎn)文字 NSSpeechRecognitionUsageDescription
日歷 NSCalendarsUsageDescription