[快速学会Swift第三方库] HanekeSwift篇

Haneke是一个轻量级的缓存，为UIImage，JSON，NSData，String提供记忆和LRU磁盘缓存。

目录

编码之前

编码之前

导入HanekeSwift

推荐使用CocoaPods进行导入，CocoaPods是一个负责管理iOS项目中第三方开源库的工具，安装CocoaPods之后使用命令行就能轻松地对所有第三方开源库进行安装和更新，而不需要每次上GitHub去下载。
CocoaPods的安装过程传送门：iOS 9 导入类库全面详尽过程（Ruby安装->CocoaPods安装->导入类库）
手动下载：GitHub-Haneke主页

装好CocoaPods后，修改Podfile文件内容为如下：

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '9.0'
use_frameworks!

target 'Web' do
pod 'HanekeSwift'
end
xcodeproj 'Desktop/Web/Web.xcodeproj'

target后面为工程名，最后一行为工程路径(这里的Web是我的工程名)

再执行命令：

$ pod install

其他操作

另外还需要在Target->工程名->Build Settings->Search Paths->User Header Search Paths处添加HanekeSwift所在的目录：

最后在你需要用到HanekeSwift的类中加上：

import Haneke

使用缓存

NSData

示例代码

let url = NSURL(string:"http://blog.csdn.net/sps900608")!
        let data = NSData(contentsOfURL: url)!

        let cache = Shared.dataCache
        //存入缓存
        cache.set(value: data, key: "data")
        //获取缓存
        cache.fetch(key: "data") { (cacheData) in
            self.webView.loadData(cacheData, MIMEType: "text/html", textEncodingName: "utf-8", baseURL: NSURL())
        }

运行结果

JSON

更多关于JSON的用法，可以参考
[快速学会Swift第三方库] SwiftyJSON篇
Swift学习笔记（2）网络数据交换格式（XML，JSON）解析

测试接口

在浏览器中打开”https://api.github.com/users/haneke“可以看到：

{
  "login": "Haneke",
  "id": 8600207,
  "avatar_url": "https://avatars.githubusercontent.com/u/8600207?v=3",
  "gravatar_id": "",
  "url": "https://api.github.com/users/Haneke",
  "html_url": "https://github.com/Haneke",
  "followers_url": "https://api.github.com/users/Haneke/followers",
  "following_url": "https://api.github.com/users/Haneke/following{/other_user}",
  "gists_url": "https://api.github.com/users/Haneke/gists{/gist_id}",
  "starred_url": "https://api.github.com/users/Haneke/starred{/owner}{/repo}",
  "subscriptions_url": "https://api.github.com/users/Haneke/subscriptions",
  "organizations_url": "https://api.github.com/users/Haneke/orgs",
  "repos_url": "https://api.github.com/users/Haneke/repos",
  "events_url": "https://api.github.com/users/Haneke/events{/privacy}",
  "received_events_url": "https://api.github.com/users/Haneke/received_events",
  "type": "Organization",
  "site_admin": false,
  "name": "Haneke",
  "company": null,
  "blog": null,
  "location": null,
  "email": null,
  "hireable": null,
  "bio": "A lightweight zero-config image cache for iOS, in Swift and Objective-C.",
  "public_repos": 4,
  "public_gists": 0,
  "followers": 0,
  "following": 0,
  "created_at": "2014-08-30T17:18:40Z",
  "updated_at": "2015-04-27T16:41:09Z"
}

示例代码

func jsonCache()  {
        let url = NSURL(string: "https://api.github.com/users/haneke")!
        let cache = Shared.JSONCache

        cache.fetch(URL: url) { (json) in
            print(json.dictionary?["bio"])
        }
    }

运行结果

Optional(A lightweight zero-config image cache for iOS, in Swift and Objective-C.)

UIImage和String

与NSData，JSON用法类似，只是定义Cache时有点区别：

let cache = Shared.imageCache

let cache = Shared.stringCache

UIImage的拓展用法

示例代码

func imageCache()  {
        let url = NSURL(string: "http://www.51work6.com/service/download.php?email=scuxiatian@foxmail.com&FileName=test1.jpg")!
        imageView.hnk_setImageFromURL(url)
    }

或者

    func imageCache()  {
        let url = NSURL(string: "http://www.51work6.com/service/download.php?email=scuxiatian@foxmail.com&FileName=test1.jpg")!
        let data = NSData(contentsOfURL: url)!
        let image = UIImage(data: data)!

        imageView.hnk_setImage(image, key: "test")
    }

运行结果

fetcher的其他用法

    func useFetcher()  {
        let url = NSURL(string: "http://www.51work6.com/service/download.php?email=scuxiatian@foxmail.com&FileName=test1.jpg")!
        let fetcher = NetworkFetcher<UIImage>(URL: url)

        let cache = Shared.imageCache
        cache.fetch(fetcher: fetcher).onSuccess { (image) in
            self.imageView.image = image
        }
    }

运行效果与前面完全相同

深入学习

这里只列出了最常用的几种用法，如果你希望能够更加深入地学习HanekeSwift，可以前往GitHub-Haneke主页！