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<h2 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h2><p>在读这篇文章之前，大家先看一下作者Casa的<a href="https://casatwy.com/iosying-yong-jia-gou-tan-wang-luo-ceng-she-ji-fang-an.html" target="_blank" rel="external">文章</a>，以便对CTNetwokring的整体设计以及使用方式有个大体的了解。</p>
<p>其次这次改造，主要由需求驱动，因为没有以下这些问题，我也不会做这样的尝试：</p>
<ul>
<li>公司的网络库使用虽然很方便，依赖性太强，不方便测试，属于集约型的做法，导致公司不太可能写单元测试，所以没有写单元测试，又由于公司后台经常私底下改接口，导致线上版本经常出现问题。</li>
<li>CTNetworking刚出来的时候我就关注了，苦于放出来的版本，适合学习，并不合适即插即用，我一直在等有人来改造，结果两年过去了。</li>
<li>由于那是早年安居客的脱敏版，所以设计上面就或多或少有一些依赖业务的东西，建立在它们业务上，的确是最合适方便的，但也由于太合适自身业务，那么也导致无法通用化，其他公司想拿来用就必须改，对于这一点，我在这里要建议强烈批评一下Casa，开源这么好的东西出来，怎么就不弄得更方便一点呢，像CTPersistance（安利一下）那样子插上就能用多好。</li>
<li>我想要开始走向开源社区（不要脸地说，我想涨点粉），在写这个文章前，由于公司项目API一两百个，真是没有余力做短期替换，所以我所提供的那部分代码还没有真正的得到真实项目的考量，另一方面基于我自己不会写后端接口，公司内容涉密问题也导致了没法给出更多完整的使用方式，本文给出的将是我的一套YY方案，欢迎评论区拍砖。</li>
</ul>
<h2 id="改造篇"><a href="#改造篇" class="headerlink" title="改造篇"></a>改造篇</h2><p>如上面提到的，原来的CTNetworking之所以不能做到即插即用，主要有以下几点：</p>
<ol>
<li>有旧业务的依赖，比如token的拼接，url组装啊。</li>
<li>涉及面略广，作为一个网络封装层，提供了CTUDIDGenerator等UUID生成器，CTAPPContext致使引入一些不必要的业务。</li>
<li>ServiceFactory需要硬编码，他需要知道详细的业务Service，而业务的Service硬编码无疑就使得他变得不通用。</li>
</ol>
<hr>
<p>谈到要解决上面的问题，那么就有必要来讲解一下CTNetworking的基本组成设计了，这是Casa没有在他文章里面讲的东西，打个比方，比如有这么一个接口,使用CTNetworking的视角来说，它是下面这样的：</p>
<figure class="highlight oxygene"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line">https:<span class="comment">//xxx.com/method?username=corotata => 完整接口</span></div><div class="line"></div><div class="line">拆解：</div><div class="line"></div><div class="line">https:<span class="comment">//xxx.com => CTNetworking中的CTService</span></div><div class="line"></div><div class="line">/<span class="function"><span class="keyword">method</span> => <span class="title">CTAPIBaseManager</span>的子类提供</span></div><div class="line"></div><div class="line"><span class="title">username</span>=<span class="title">corotata</span> => <span class="title">CTAPIBaseManager</span>的子类所对应的<span class="title">CTAPIManagerParamSource</span></div></pre></td></tr></table></figure>
<p>所以CTNetworking所做的事情，就是将上面的内容进行拆解工作，将完整的API拼接拆解开成为一个个小部件，再通过CTApiProxy、CTRequestGenerator以及CTServiceFactory做为胶水，将他们组合起来，而通过CTURLResponse做为回调输出。</p>
<hr>
<p>首先是CTService，它主要是以域名头的形式存在，很多网络库封装都会直接忽略掉这一层，相信有不少朋友也是有过以下的经验吧：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">static</span> <span class="built_in">NSString</span> *<span class="keyword">const</span> kBaseUrl = <span class="string">@"https://abc.com"</span>;<span class="comment">//正式服</span></div><div class="line"></div><div class="line">NetworkRequestDataModel *dataModel = [[NetworkRequestDataModel alloc] init];</div><div class="line">dataModel.interfaceFlag = kLoginUrl;</div><div class="line">dataModel.url = [<span class="built_in">NSString</span> stringWithFormat:<span class="string">@"%@%@"</span>,kBaseUrl,kLoginUrl];</div><div class="line">dataModel.params = loginDic;</div><div class="line">dataModel.isRequireLogin = <span class="literal">NO</span>;</div><div class="line">dataModel.success = ^(<span class="keyword">id</span> responseObject) {</div><div class="line"> DLogInfo(<span class="string">@"登录成功"</span>); </div><div class="line">};</div><div class="line">dataModel.failure = ^(<span class="built_in">NSError</span> *error,<span class="built_in">NSInteger</span> httpStatusCode) {</div><div class="line"> DDLogInfo(<span class="string">@"登录失败"</span>); </div><div class="line">};</div><div class="line">[LGHttpManager dataTaskWithDataModel:dataModel];</div></pre></td></tr></table></figure>
<h3 id="问题1-："><a href="#问题1-：" class="headerlink" title="问题1 ："></a>问题1 ：</h3><p>基本拼接的方式，渗透到每一个调用者身上，让调用者来提供URL的拼接方式,而往往同一服务器团队，提供的API接口都会是同样的规格，以后如果接口拼接方式改动了，那无疑将会是噩梦，可能有的小伙伴会说，你不知道可以全局替换吗？可以的，无疑有点丑了点，但如果一个APP里面同时有几个服务器团队给你提供的接口呢，而且忽然说要改了拼接方式，全局改起来还是有一点难度吧，又或者是有需求加通用参数或者通用的HTTPHeader啊，那时侯我们该怎么办？程序维护，少不了就是变动。所以为了应对这样的问题，我做了Service层的改造，主要提供了以下接口，交由子类去处理：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div></pre></td><td class="code"><pre><div class="line"><span class="comment">//CTServiceProtocol</span></div><div class="line"></div><div class="line"><span class="comment">//为某些Service需要拼凑额外字段到URL处</span></div><div class="line">- (<span class="built_in">NSDictionary</span> *)extraParmas;</div><div class="line"></div><div class="line"><span class="comment">//为某些Service需要拼凑额外的HTTPToken，如accessToken</span></div><div class="line">- (<span class="built_in">NSDictionary</span> *)extraHttpHeadParmasWithMethodName:(<span class="built_in">NSString</span> *)method;</div><div class="line"></div><div class="line"><span class="comment">//提供URL的拼接方式</span></div><div class="line">- (<span class="built_in">NSString</span> *)urlGeneratingRuleByMethodName:(<span class="built_in">NSString</span> *)method;</div><div class="line"></div><div class="line"><span class="comment">//提供拦截器集中处理Service错误问题，比如token失效要抛通知等，返回值用来做拦截特殊错误时通知上层是否还要继续回调</span></div><div class="line">- (<span class="built_in">BOOL</span>)shouldCallBackByFailedOnCallingAPI:(<span class="built_in">CTAPIBaseManager</span> *)apiManager;</div></pre></td></tr></table></figure>
<p>看源码时，就具体看下CTRequestGenerator，他主要做请求的组装加工操作，以NSURLRequest返回给CTApiProxy进行网络请求,我贴下核心的代码：<br><figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div></pre></td><td class="code"><pre><div class="line">- (<span class="built_in">NSURLRequest</span> *)generateRequestWithServiceIdentifier:(<span class="built_in">NSString</span> *)serviceIdentifier requestParams:(<span class="built_in">NSDictionary</span> *)requestParams methodName:(<span class="built_in">NSString</span> *)methodName requestWithMethod:(<span class="built_in">NSString</span> *)method {</div><div class="line"> <span class="built_in">CTService</span> *service = [[<span class="built_in">CTServiceFactory</span> sharedInstance] serviceWithIdentifier:serviceIdentifier];</div><div class="line"> <span class="built_in">NSString</span> *urlString = [service urlGeneratingRuleByMethodName:methodName];</div><div class="line"> </div><div class="line"> <span class="built_in">NSDictionary</span> *totalRequestParams = [<span class="keyword">self</span> totalRequestParamsByService:service requestParams:requestParams];</div><div class="line"> </div><div class="line"> <span class="built_in">NSMutableURLRequest</span> *request = [<span class="keyword">self</span>.httpRequestSerializer requestWithMethod:method URLString:urlString parameters:totalRequestParams error:<span class="literal">NULL</span>];</div><div class="line"> </div><div class="line"> <span class="keyword">if</span> (![method isEqualToString:<span class="string">@"GET"</span>] && [<span class="built_in">CTNetworkingConfigurationManager</span> sharedInstance].shouldSetParamsInHTTPBodyButGET) {</div><div class="line"> request.HTTPBody = [<span class="built_in">NSJSONSerialization</span> dataWithJSONObject:requestParams options:<span class="number">0</span> error:<span class="literal">NULL</span>];</div><div class="line"> }</div><div class="line"> </div><div class="line"> <span class="keyword">if</span> ([service.child respondsToSelector:<span class="keyword">@selector</span>(extraHttpHeadParmasWithMethodName:)]) {</div><div class="line"> <span class="built_in">NSDictionary</span> *dict = [service.child extraHttpHeadParmasWithMethodName:methodName];</div><div class="line"> <span class="keyword">if</span> (dict) {</div><div class="line"> [dict enumerateKeysAndObjectsUsingBlock:^(<span class="keyword">id</span> _Nonnull key, <span class="keyword">id</span> _Nonnull obj, <span class="built_in">BOOL</span> * _Nonnull stop) {</div><div class="line"> [request setValue:obj forHTTPHeaderField:key];</div><div class="line"> }];</div><div class="line"> }</div><div class="line"> }</div><div class="line"> </div><div class="line"> request.requestParams = totalRequestParams;</div><div class="line"> <span class="keyword">return</span> request;</div><div class="line">}</div><div class="line"></div><div class="line"></div><div class="line"><span class="meta">#pragma mark - private method</span></div><div class="line"><span class="comment">//根据Service拼接额外参数</span></div><div class="line">- (<span class="built_in">NSDictionary</span> *)totalRequestParamsByService:(<span class="built_in">CTService</span> *)service requestParams:(<span class="built_in">NSDictionary</span> *)requestParams {</div><div class="line"> <span class="built_in">NSMutableDictionary</span> *totalRequestParams = [<span class="built_in">NSMutableDictionary</span> dictionaryWithDictionary:requestParams];</div><div class="line"> </div><div class="line"> <span class="keyword">if</span> ([service.child respondsToSelector:<span class="keyword">@selector</span>(extraParmas)]) {</div><div class="line"> <span class="keyword">if</span> ([service.child extraParmas]) {</div><div class="line"> [[service.child extraParmas] enumerateKeysAndObjectsUsingBlock:^(<span class="keyword">id</span> _Nonnull key, <span class="keyword">id</span> _Nonnull obj, <span class="built_in">BOOL</span> * _Nonnull stop) {</div><div class="line"> [totalRequestParams setObject:obj forKey:key];</div><div class="line"> }];</div><div class="line"> }</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> [totalRequestParams <span class="keyword">copy</span>];</div><div class="line">}</div></pre></td></tr></table></figure></p>
<p>内容也比较简单，方法名有相关注释我也就不知道怎么解释了，至此问题1，提到的内容得到解决。</p>
<h3 id="问题2-："><a href="#问题2-：" class="headerlink" title="问题2 ："></a>问题2 ：</h3><p>关于问题2，我本来是不想写的，但由于CTNetworking的Star有快1000了，所以对于删文件这种的重大举措，就有必要提一下了，否则下次人家下了个包，就会怒喷上个版本还提供，怎么这个版本就没了，虽然是我干的，但大家@Casa吧，下面就简单聊下我删除内容的想法以及原本CTNetworking的变动内容：</p>
<ol>
<li>作为网络组件，涉及的内容应该在这个范围内，否则它应该是一个APP，而不是组件了，对于过多的功能，最简单的方式就是删，将不是必要的内容删除就可以了。</li>
<li>CTAPPContext提供太多不是CTNetworking应该提供的功能，砍掉了。</li>
<li>CTUDIDGenerator作为一个唯一ID生成器，我觉得它应该以一个通用的组件出现，原生主要是CTAPPContext在提供服务，由于CTAPPContext已经被砍掉了，所以它和框架就完全没有依赖了，所以也可以砍掉了。</li>
<li>原来的一个叫CTNetworkingConfiguration.h被砍掉了，转而增加了CTNetworkingConfigurationManager单例，提供一些默认的配置以及原生CTAPPContext提供的部分必要服务</li>
<li>将来可能还需要砍掉的如CTSignatureGenerator，CTCommonParamsGenerator，CTLocationManager等，由于有些是不是为了后期预留的暂不知道，所以就没有动了。</li>
<li>调整了大部分分类名称及方法，统一前缀CT_。</li>
</ol>
<h3 id="问题3-："><a href="#问题3-：" class="headerlink" title="问题3 ："></a>问题3 ：</h3><p>针对问题3，由于CTServiceFactory是单例，而CTServiceFactory与CTService之间的关系其实就只差一个映射字典，所以只要为它提供@{identifier1: @”GDMapService1”,identifier2: @”GDMapService2”}，在这里GDMapService1即为相应的Service的字符串，CTServiceFactory使用时，则通过反映直接生成对象，这样就不用去添加不必要的引用了。</p>
<p>在这边我是让CTServiceFactory提供一个数据源，即CTServiceFactoryDataSource，其实也可以直接提供一个属性的，但不晓得当时为什么这么做的，忘记了，可能是脑抽了吧，所以使用起来，大致是这样的：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div></pre></td><td class="code"><pre><div class="line"></div><div class="line"><span class="class"><span class="keyword">@implementation</span> <span class="title">AppDelegate</span></span></div><div class="line"></div><div class="line">- (<span class="built_in">BOOL</span>)application:(<span class="built_in">UIApplication</span> *)application didFinishLaunchingWithOptions:(<span class="built_in">NSDictionary</span> *)launchOptions {</div><div class="line"> [<span class="built_in">CTServiceFactory</span> sharedInstance].dataSource = <span class="keyword">self</span>;</div><div class="line"> <span class="keyword">return</span> <span class="literal">YES</span>;</div><div class="line">}</div><div class="line"></div><div class="line"><span class="meta">#pragma mark - CTServiceFactoryDataSource</span></div><div class="line">- (<span class="built_in">NSDictionary</span><<span class="built_in">NSString</span> *,<span class="built_in">NSString</span> *> *)servicesKindsOfServiceFactory {</div><div class="line"> <span class="keyword">return</span> @{kCTServiceGDMapV3: <span class="string">@"GDMapService"</span>};</div><div class="line">}</div></pre></td></tr></table></figure>
<p>至此，所有改造的内容已经讲完了。</p>
<h3 id="扩展篇"><a href="#扩展篇" class="headerlink" title="扩展篇"></a>扩展篇</h3><p>现市面上，大部分APP都采用OAUTH授权登录的方式，登录完成后，会获得相应的accessToken、expireTime及refreshToken,基本上调用其他接口使用，都会在请求头里面拼接相应的accessToken，这部分上面有提到应该交由Service去处理，让Service负责拼接的工作。</p>
<p>网络请求时，token失效是会收到类型expired_access_token，而token非法时，会收到illegal_access_token，当然还有更多的情况，由于错误信息error description可能各种公司的会不一致，所以在Service层预留的shouldCallBackByFailedOnCallingAPI就是为了做这样的事情，当网络请求失败时，到service决定是否拦截并做相应处理。</p>
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<article id="post-2017-4-6-关于组件化使用私有Pods的一些记录" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2017/04/06/2017-4-6-关于组件化使用私有Pods的一些记录/" class="article-date">
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</h1>
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<div class="article-entry" itemprop="articleBody">
<p>最近在做项目的组件化，其中遇到一些问题，经常遇到自己解决过的问题又完全想不起来，于是每次都要反复查阅，很影响效率，所以打算把自己遇到的问题都记录下来，利人利己，下面我会以案例的方式，来讲述一些问题：</p>
<h3 id="案例1"><a href="#案例1" class="headerlink" title="案例1"></a>案例1</h3><blockquote>
<p>项目中图片缓存层是基于SDWebImage做的二次封装，在提交私有Pod时，出现了以下问题：</p>
<figure class="highlight"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">-> LGWebImage (1)</div><div class="line"> - ERROR | [iOS] xcodebuild: Returned an unsuccessful exit code.</div><div class="line"> - ERROR | xcodebuild: LGWebImage/LGWebImage/LGWebImage/UIButton+LGWebCache.m:10:9: error: 'UIButton+WebCache.h' file not found with <angled> include; use "quotes" instead</div><div class="line"> - ERROR | xcodebuild: LGWebImage/LGWebImage/LGWebImage/UIImageView+LGWebCache.m:10:9: error: 'UIImageView+WebCache.h' file not found with <angled> include; use "quotes" instead</div><div class="line">></div></pre></td></tr></table></figure>
</blockquote>
<p>封装库中使用了SDWebImage中的UIImageView+WebCache和UIButton+WebCache,虽然在PodSpec文件里面添加了SDWebImage的依赖，但在打Pod时，并没有发现SDWebImage的文件头，所以代码层面就编译不过了，这时候只需要在PodSpec添加暴露SDWebImage头文件的配置即可解决问题，如下所示：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">s.xcconfig = { <span class="string">"HEADER_SEARCH_PATHS"</span> => <span class="string">"$(SRCROOT)/SDWebImage"</span> }</div></pre></td></tr></table></figure>
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<article id="post-2016-06-12-Swift中小知识点手札" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2017/04/06/2016-06-12-Swift中小知识点手札/" class="article-date">
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<div class="article-entry" itemprop="articleBody">
<h3 id="Xcode快捷键"><a href="#Xcode快捷键" class="headerlink" title="Xcode快捷键"></a>Xcode快捷键</h3><table>
<thead>
<tr>
<th style="text-align:left">键位</th>
<th style="text-align:right">含义</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">Command + shift +j</td>
<td style="text-align:right">快速定位到目录</td>
</tr>
</tbody>
</table>
<h3 id="guard"><a href="#guard" class="headerlink" title="guard"></a>guard</h3><p>Swift中的常用语法，可以有效解决可选绑定形成的{}（大括号）嵌套，提高代码的可读性，语法如下：</p>
<figure class="highlight clean"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line">guard 条件表达式 else{</div><div class="line"> <span class="comment">//条件为false时，才会执行内容的内容</span></div><div class="line"> return</div><div class="line">}</div><div class="line"></div><div class="line">........</div><div class="line">........</div></pre></td></tr></table></figure>
<h3 id="try"><a href="#try" class="headerlink" title="try"></a>try</h3><p>try是Swift中的关键字，用于处理异常</p>
<table>
<thead>
<tr>
<th style="text-align:left">字段类型</th>
<th style="text-align:right">含义</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">try</td>
<td style="text-align:right">正常处理异常，需要通过添加do{} catch{}来处理</td>
</tr>
<tr>
<td style="text-align:left">try!</td>
<td style="text-align:right">告诉系统一定不会有异常，可以不添加do{} catch{}，但需要注意，开发中不推荐这样写，一旦发生异常程序就会崩溃，如果没有异常，那么会返回一个确定的值</td>
</tr>
<tr>
<td style="text-align:left">try?</td>
<td style="text-align:right">告诉系统异常发生存在可能性，可以不添加do{} catch{}，如果没有异常，系统会自动将结果包装成为一个可选类型，如果有异常则返回nil</td>
</tr>
</tbody>
</table>
<h3 id="public、internal、private"><a href="#public、internal、private" class="headerlink" title="public、internal、private"></a>public、internal、private</h3><table>
<thead>
<tr>
<th style="text-align:left">字段</th>
<th style="text-align:right">含义</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">public</td>
<td style="text-align:right">最大权限，可以在当前framework和其他framework中访问</td>
</tr>
<tr>
<td style="text-align:left">internal</td>
<td style="text-align:right">默认权限，可以在当前framework中任意使用</td>
</tr>
<tr>
<td style="text-align:left">private</td>
<td style="text-align:right">私有权限，只能在当前文件中访问</td>
</tr>
</tbody>
</table>
<blockquote>
<p>以上的权限可以修性属性/方法/类</p>
<p>在开发中，需要严格控制权限，特别是在Swift中，不像OC，可以将部分方法或者属性，只在.m文件中声明，来防止外部调用,Swift中则要用private来修性对应的方法或者属性</p>
</blockquote>
<h3 id="obj"><a href="#obj" class="headerlink" title="@obj"></a>@obj</h3><blockquote>
<p>Swift中所有的东西都是编译时确定的，所以Swift不像OC支持动态派发，如果想让其支持，将需要在相应方法前面添加<strong>@obj</strong>做修饰,一般会使用在给方法添加private时配套使用</p>
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<article id="post-Swift中自定义Log" class="article article-type-post" itemscope itemprop="blogPost">
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<p>用于输出的常用函数</p>
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<thead>
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<th style="text-align:left">函数名</th>
<th style="text-align:right">含义</th>
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<tr>
<td style="text-align:left">#function</td>
<td style="text-align:right">获取当前输出所在的文件路径</td>
</tr>
<tr>
<td style="text-align:left">#line</td>
<td style="text-align:right">获取当前输出所在的行号</td>
</tr>
<tr>
<td style="text-align:left">#file</td>
<td style="text-align:right">获取当前输出的文件名</td>
</tr>
</tbody>
</table>
<p>所以利用上面的内容，我们可以定义以下函数做为输出：</p>
<figure class="highlight swift"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">func</span> <span class="title">CRLog</span><T><span class="params">(content: T, fileName:String = #file, methodName: String = #function, lineNumber: Int = #line)</span></span>{</div><div class="line"> <span class="keyword">let</span> tempFileName = (#file <span class="keyword">as</span> <span class="type">NSString</span>).pathComponents.last! <span class="keyword">as</span> <span class="type">NSString</span></div><div class="line"> tempFileName</div><div class="line"> <span class="built_in">print</span>(tempFileName.stringByDeletingPathExtension + <span class="string">"."</span> + methodName + <span class="string">"___"</span> + <span class="string">"<span class="subst">\(lineNumber)</span>"</span>)</div><div class="line">}</div></pre></td></tr></table></figure>
<p>其中后面几个值有默认值，当不输入时，则会自动获得相应内容打印.</p>
<p>如果我们有需求，当在DEBUG模式下，就打印输出，在release模式下就不打印，那么我们需要改写我们的代码如下：</p>
<figure class="highlight swift"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">func</span> <span class="title">CRLog</span><T><span class="params">(content: T, fileName:String = #file, methodName: String = #function, lineNumber: Int = #line)</span></span>{</div><div class="line"> #<span class="keyword">if</span> <span class="type">DEBUG</span></div><div class="line"> <span class="keyword">let</span> tempFileName = (#file <span class="keyword">as</span> <span class="type">NSString</span>).pathComponents.last! <span class="keyword">as</span> <span class="type">NSString</span></div><div class="line"> tempFileName</div><div class="line"> <span class="built_in">print</span>(tempFileName.stringByDeletingPathExtension + <span class="string">"."</span> + methodName + <span class="string">"___"</span> + <span class="string">"<span class="subst">\(lineNumber)</span>"</span>)</div><div class="line"> #endif</div><div class="line"> </div><div class="line"> }</div></pre></td></tr></table></figure>
<p>其中DEBUG可为任意内容，由于Swift中没有像OC中自身定义了DEBUG宏，所以此处的DEBUG可以为任意值，你可以写成你的名字等等,写完后，我们需要去配置一下这个值,于是我们需要来到:<br>工程目录->Targets->Build Settings->Swift Compiler -> Custom Flags -> Other Swift Flags -> Debug，然后在里面填写 <strong>-D DEBUG </strong>,此处的DEBUG就是你上面定义的值，与代码中的那个值保持一致就可以了，至此，你可以切换成DEBUG模式和Release模式各自尝试一下输出效果。</p>
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<article id="post-2016-06-12-QorumLogs" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2016/06/12/2016-06-12-QorumLogs/" class="article-date">
<time datetime="2016-06-12T07:12:38.000Z" itemprop="datePublished">2016-06-12</time>
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<p>##QorumLogs<br>Swift开发中，在面临Bug时，我们常常采用的方式就是暴力调试，今天我就介绍一款Swift中的Log日志，开源项目名为：QorumLogs，它能配合XcodeColors输出彩色的Log日志</p>
<p>###基本用法</p>
<figure class="highlight nix"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">QorumLogs.<span class="attr">enabled</span> = <span class="literal">true</span></div></pre></td></tr></table></figure>
<p>开启日志系统</p>
<figure class="highlight css"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><span class="selector-tag">QorumLogs</span><span class="selector-class">.test</span>()</div></pre></td></tr></table></figure>
<p>输出测试日志，这时，我们就能看到五颜色的输出日志</p>
<figure class="highlight stylus"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">QorumLogs<span class="selector-class">.minimumLogLevelShown</span> = <span class="number">1</span></div></pre></td></tr></table></figure>
<p>设置日志输出级别，他总共有四个级别，分别为Debug,Info,Warn和Error，通过设置，我们可以通过设置输出级别来过滤掉不想输出的日志</p>
<figure class="highlight less"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><span class="selector-tag">QorumLogs</span><span class="selector-class">.onlyShowThisFile</span>(<span class="string">"ViewController"</span>)</div></pre></td></tr></table></figure>
<p>设置只输出，ViewController这个文件的日志</p>
<figure class="highlight less"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><span class="selector-tag">QorumLogs</span><span class="selector-class">.onlyShowTheseFiles</span>(<span class="string">"ViewController"</span>,<span class="string">"AppDelegate"</span>)</div></pre></td></tr></table></figure>
<p>设置指定多文件输出，值得注意的是，这里是大小写敏感的</p>
<figure class="highlight stylus"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="title">QL1</span><span class="params">(<span class="string">"Debug"</span>)</span></span></div><div class="line"><span class="function"><span class="title">QL2</span><span class="params">(<span class="string">"Info"</span>)</span></span></div><div class="line"><span class="function"><span class="title">QL3</span><span class="params">(<span class="string">"Warn"</span>)</span></span></div><div class="line"><span class="function"><span class="title">QL4</span><span class="params">(<span class="string">"Error"</span>)</span></span></div></pre></td></tr></table></figure>
<p>QorumLogs内部定义的基本四种Tag输出</p>
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<article id="post-2016-3-17-循环引用" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2016/03/17/2016-3-17-循环引用/" class="article-date">
<time datetime="2016-03-17T01:09:45.000Z" itemprop="datePublished">2016-03-17</time>
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<a class="article-title" href="/2016/03/17/2016-3-17-循环引用/">循环引用</a>
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<p>今天记录一下OC里面另一个常见的问题，那就是循环引用，总的来说现在我会想到的只有三种，后续如果有其他再类似的我会再一一补上：</p>
<ol>
<li>类的循环引用</li>
<li>MRC retain循环引用</li>
<li>ARC strong对象的循环引用（其实和2是一样的，只是关键字不同而已）</li>
</ol>
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<article id="post-2016-3-16-OC内存管理" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2016/03/16/2016-3-16-OC内存管理/" class="article-date">
<time datetime="2016-03-16T08:54:31.000Z" itemprop="datePublished">2016-03-16</time>
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<a class="article-title" href="/2016/03/16/2016-3-16-OC内存管理/">OC内存管理</a>
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<p>现在是求职季，OC的面试，肯定少不了内存管理，尽管现在基本都是ARC的项目，应该没有谁还在折腾MRC吧，不过这两天貌似有看到一个开源LeagueofLegends，还真是MRC，那会我看着，我只想说，哥们，你怎么如此蛋疼，没有别的意思，纯属闲扯，好吧，进入今天的话题。<br>
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<a href="/2016/03/14/2016-3-14-KVC/" class="article-date">
<time datetime="2016-03-14T09:30:30.000Z" itemprop="datePublished">2016-03-14</time>
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<a class="article-title" href="/2016/03/14/2016-3-14-KVC/">KVC</a>
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<p>KVC，即是指 NSKeyValueCoding，一个非正式的 Protocol，提供一种机制来间接访问对象的属性。功能有点类似于我们平常使用的get和set方法，直接从例子来看看比较直观吧：</p>
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<article id="post-2016-2-20-Swift和Objective-C中的单例" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2016/02/20/2016-2-20-Swift和Objective-C中的单例/" class="article-date">
<time datetime="2016-02-20T02:58:47.000Z" itemprop="datePublished">2016-02-20</time>
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<div class="article-entry" itemprop="articleBody">
<p>Objective-C中单例的使用姿势：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div></pre></td><td class="code"><pre><div class="line"></div><div class="line">+(instancetype)sharedXMPPManager{</div><div class="line"> static XMPPManager *_instance;</div><div class="line"> static dispatch_once_t onceToken;</div><div class="line"> dispatch_once(&onceToken, ^{</div><div class="line"> _instance = [[self alloc] init];</div><div class="line"> });</div><div class="line"> return _instance;</div><div class="line">}</div><div class="line"></div><div class="line">+ (instancetype)allocWithZone:(struct _NSZone *)zone{</div><div class="line"> static XMPPManager *_instance;</div><div class="line"> static dispatch_once_t onceToken;</div><div class="line"> dispatch_once(&onceToken, ^{</div><div class="line"> _instance = [super allocWithZone:zone];</div><div class="line"> });</div><div class="line"> return _instance;</div><div class="line">}</div></pre></td></tr></table></figure>
<p>那么Swift中该如何写呢，首先给出一种模仿OC的写法：</p>
<figure class="highlight swift"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">import</span> UIKit</div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">XMPPManager</span>: <span class="title">NSObject</span> </span>{</div><div class="line"> </div><div class="line"> <span class="keyword">static</span> <span class="keyword">var</span> onceToken :dispatch_once_t = <span class="number">0</span></div><div class="line"> <span class="keyword">static</span> <span class="keyword">var</span> instance :<span class="type">XMPPManager</span>?</div><div class="line"> <span class="class"><span class="keyword">class</span> <span class="title">func</span> <span class="title">sharedXMPPManager</span>()-><span class="title">XMPPManager</span> </span>{</div><div class="line"> dispatch_once(&onceToken) { () -> <span class="type">Void</span> <span class="keyword">in</span></div><div class="line"> instance = <span class="type">XMPPManager</span>()</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> instance!</div><div class="line"> }</div><div class="line"> </div><div class="line">}</div></pre></td></tr></table></figure>
<p>由于let在Swift中是线程安全的，所以又有以下这种写法,也应该是通用写法了：</p>
<figure class="highlight swift"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">import</span> UIKit</div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">XMPPManager</span>: <span class="title">NSObject</span> </span>{</div><div class="line"> <span class="keyword">static</span> <span class="keyword">let</span> instance : <span class="type">XMPPManager</span> = <span class="type">XMPPManager</span>()</div><div class="line"> <span class="class"><span class="keyword">class</span> <span class="title">func</span> <span class="title">sharedXMPPManager</span>()-><span class="title">XMPPManager</span> </span>{</div><div class="line"> <span class="keyword">return</span> instance</div><div class="line"> }</div><div class="line">}</div><div class="line"></div><div class="line"></div><div class="line">调用方式：<span class="type">XMPPManager</span>.sharedXMPPManager()</div></pre></td></tr></table></figure>
<p>而后，我又在Alamofire中发现另外一种写法，效果类似于上面，不过他是以属性的方式提供，</p>
<figure class="highlight swift"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line"></div><div class="line"><span class="keyword">import</span> UIKit</div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">XMPPManager</span>: <span class="title">NSObject</span> </span>{</div><div class="line"> <span class="keyword">internal</span> <span class="keyword">static</span> <span class="keyword">let</span> sharedInstance:<span class="type">XMPPManager</span> = <span class="type">XMPPManager</span>()</div><div class="line">}</div><div class="line"></div><div class="line">调用方式：<span class="type">XMPPManager</span>.sharedXMPPManager</div></pre></td></tr></table></figure>
<p>大概就这样了，暂做记录。</p>
<hr>
<p>注：版权声明：本文为博主原创文章，未经博主允许不得转载。</p>
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<article id="post-2016-2-20在swift中使用CocoaPods" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2016/02/20/2016-2-20在swift中使用CocoaPods/" class="article-date">
<time datetime="2016-02-20T02:38:06.000Z" itemprop="datePublished">2016-02-20</time>
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<p>在swift中使用CocoaPods和Objective-C中其实没啥区别，<br>在工程路径下使用，pod init 创建Profile文件<br>打开Profile文件，以下以添加SnapKit和Alamofire为例，在文件中写入</p>
<figure class="highlight elixir"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div></pre></td><td class="code"><pre><div class="line"><span class="comment"># Uncomment this line to define a global platform for your project</span></div><div class="line"><span class="comment"># platform :ios, '8.0'</span></div><div class="line"><span class="comment"># Uncomment this line if you're using Swift</span></div><div class="line"><span class="comment"># use_frameworks!</span></div><div class="line"></div><div class="line">target <span class="string">'CRWeiBo'</span> <span class="keyword">do</span></div><div class="line">pod <span class="string">'SnapKit'</span>, <span class="string">'0.18.0'</span></div><div class="line">pod <span class="string">'Alamofire'</span>, <span class="string">'3.1.3'</span></div><div class="line"><span class="keyword">end</span></div><div class="line"></div><div class="line">target <span class="string">'CRWeiBoTests'</span> <span class="keyword">do</span></div><div class="line"></div><div class="line"><span class="keyword">end</span></div><div class="line"></div><div class="line">target <span class="string">'CRWeiBoUITests'</span> <span class="keyword">do</span></div><div class="line"></div><div class="line"><span class="keyword">end</span></div></pre></td></tr></table></figure>
<p>如profile前面提示的，如果在swift环境下添加use_frameworks!，因为我们是直接生成的Profile文件，所以直接取消上面那行注释就可以了</p>
<figure class="highlight elixir"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div></pre></td><td class="code"><pre><div class="line"><span class="comment"># Uncomment this line to define a global platform for your project</span></div><div class="line"><span class="comment"># platform :ios, '8.0'</span></div><div class="line"><span class="comment"># Uncomment this line if you're using Swift</span></div><div class="line">use_frameworks!</div><div class="line"></div><div class="line">target <span class="string">'CRWeiBo'</span> <span class="keyword">do</span></div><div class="line">pod <span class="string">'SnapKit'</span>, <span class="string">'0.18.0'</span></div><div class="line">pod <span class="string">'Alamofire'</span>, <span class="string">'3.1.3'</span></div><div class="line"><span class="keyword">end</span></div><div class="line"></div><div class="line">target <span class="string">'CRWeiBoTests'</span> <span class="keyword">do</span></div><div class="line"></div><div class="line"><span class="keyword">end</span></div><div class="line"></div><div class="line">target <span class="string">'CRWeiBoUITests'</span> <span class="keyword">do</span></div><div class="line"></div><div class="line"><span class="keyword">end</span></div></pre></td></tr></table></figure>
<p>如果是自己手动创建的，则需要自己补上</p>
<hr>
<p>注：版权声明：本文为博主原创文章，未经博主允许不得转载。</p>
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