程序博客网 > 新淘宝店如何破零知乎

数据持久化-属性列表、归档、NSUserDefaults

来源：互联网 发布：新淘宝店如何破零知乎 编辑：程序博客网 时间：2024/05/24 01:58

应用沙盒简介

  • iOS系统为每个应用程序提供了独立的存储空间“沙盒”。

  • 每个应用程序都遵守沙盒机制，即程序仅能访问自身所属沙盒空间内的数据。

  • 沙盒为程序主路径，包含以下目录：

    • Document：存储用户自定义数据。

    • Library：存储应用程序相关数据。

    • tmp： 存放临时文件的地方，当iPhone重启时，会丢弃该目录里所有的文件 。

  • 路径获取：

    • 获取沙盒主路径：NSHomeDirectory()

    • 获取Document路径：[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]

    • 获取Library路径：[NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject]

    • 获取Temp路径：NSTemporaryDirectory( )

    • 获取应用包路径：[[NSBundle mainBundle] pathForAuxiliaryExecutable:@”“]

NSFileManager 文件管理类

  • NSFileManager可以完成沙盒路径下的文件管理工作，包括目录创建、文件创建、删除、移动、复制等。

  • NSFileManager使用单例方法访问：

  • <code class="hljs diff has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-addition" style="box-sizing: border-box; background-color: rgb(186, 238, 186);">+ (NSFileManager *)defaultManager;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li></li></ul>

      • 判断指定路径下是否存在文件：
      <ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li></li></ul>
        -(BOOL)fileExistsAtPath:(NSString *)path;-(BOOL)fileExistsAtPath:(NSString *)path isDirectory:(BOOL *)isDirectory;

        • 文件处理方法：
        <code class="hljs objectivec has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 1、创建文件</span>- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">BOOL</span>)createFileAtPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)path contents:(NSData *)data attributes:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSDictionary</span> *)attr;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 2、创建目录</span>- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">BOOL</span>)createDirectoryAtPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)path attributes:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSDictionary</span> *)attributes;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 3、复制文件</span>- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">BOOL</span>)copyItemAtPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)srcPath toPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)dstPath error:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSError</span> **)error;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 4、移动文件</span>- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">BOOL</span>)moveItemAtPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)srcPath toPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)dstPath error:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSError</span> **)error;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 5、删除文件</span>- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">BOOL</span>)removeItemAtPath:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)path error:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSError</span> **)error;</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li></ul>

        NSUserDefaults

        • NSUserDefaults 可以让用户对应用程序进行一些简单的配置。

        • NSUserDefaults 同时也是一种轻量的持久化存储机制。

        • NSUserDefaults 使用单例方法访问：

        <ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>
        + (NSUserDefaults *)standardUserDefaults;

        • NSUserDefaults 插入数据：
        • <code class="hljs erlang has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pp" style="box-sizing: border-box;">- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>setObject:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(id)</span>value forKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>setInteger:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSInteger</span>)</span>value forKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>setFloat:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(float)</span>value forKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>setDouble:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(double)</span>value forKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>setBool:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">BOOL</span>)</span>value forKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>setURL:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSURL</span> *)</span>url forKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li></ul>
          • NSUserDefaults 读取数据：
          • <code class="hljs erlang has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pp" style="box-sizing: border-box;">- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(id)</span>objectForKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSInteger</span>)</span>integerForKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(float)</span>floatForKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(double)</span>doubleForKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">BOOL</span>)</span>boolForKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSURL</span> *)</span>URLForKey:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSString</span> *)</span>defaultName;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li></ul>
            • NSUserDefaults 同步数据到文件系统：
            -(BOOL)synchronize;

          • 属性列表

            • Cocoa中有一类名为属性列表的文件，简写为plist（property list）。

            • Cocoa知道如何将此类对象进行保存和加载，即属性列表对象可以直接写入文件，或从文件加载为相应属性列表对象。

            • 常见的属性列表类：NSString、NSNumber、NSDate、NSData、NSArray、NSDictionary及其变体（NSMutable）。

            • 对于集合属性列表类NSArray、NSDictionary需要其内部的对象也是属性列表类，才可以写入文件系统。

            • 属性列表类写入文件方法：

            -(BOOL)writeToFile:(NSString *)path atomically:(BOOL)useAuxiliaryFile;
            • Plist文件创建步骤：Command + N -> ios or OSX -> Resource -> Peoperty List

            对象归档

            • 系统属性列表类默认可以写入文件，用户自定义类无法写入文件。

            • 自定义类的对象可以通过归档来完成写入文件系统。

            • 通过遵守NSCoding协议并实现协议方法：

            <code class="hljs erlang has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pp" style="box-sizing: border-box;">- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(void)</span>encodeWithCoder:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSCoder</span> *)</span>aCoder;- <span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(id)</span>initWithCoder:<span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(<span class="hljs-variable" style="box-sizing: border-box;">NSCoder</span> *)</span>aDecoder;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li></li></ul>
              • 使用NSKeyedUnarchiver、NSKeyedArchiver将对象归档为NSData写入文件或加载到内存。

              数据持久化案例

              界面展示

              这里写图片描述

              代码示例

              Plist代码示例

              <code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">#<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"ViewController.h"</span><span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 打印路径 */</span>#define NSLOG_DOCUMENTS_PATH  NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"%@"</span>, NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject);<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 沙盒地址 */</span>#define DOCUMENT_PATH NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 文件管理类 */</span>#define DEFAULT_FILEMANAGER [NSFileManager defaultManager]<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> NSString *<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> plistName      = @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/UserInfomation.plist"</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> NSString *<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> dataKey        = @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"datas"</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> NSString *<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> nameKey        = @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name"</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> NSString *<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> addressKey     = @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"address"</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> NSString *<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">const</span> phoneNumberKey = @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"phoneNumber"</span>;<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@interface</span> ViewController ()<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@property</span> (strong, nonatomic) IBOutlet UITextField *nameTextField; <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 姓名 */</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@property</span> (strong, nonatomic) IBOutlet UITextField *addressTextField; <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 地址 */</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@property</span> (strong, nonatomic) IBOutlet UITextField *phoneNumberTextField; <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 电话 */</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@end</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@implementation</span> ViewController- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)viewDidLoad {    [<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span> viewDidLoad];}#pragma mark - plist<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** * 手动创建Plist文件 * * 1、Command + N -》 ios or OSX -》Resource -》Peoperty List * 2、对plist文件数据的操作，如果增加一条数据，key相同则是对原有数据修改 */</span>- (IBAction)plist_save:(UIButton *)sender {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([self isEmptyData]) {        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"message is empty, save error!"</span>);        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>;    }    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取沙盒路径</span>    NSArray *sandBoxPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取完成路径</span>    NSString *documentsDirectory = [sandBoxPath objectAtIndex:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取plist文件路径</span>    NSString *plistPath = [documentsDirectory stringByAppendingString:plistName];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 初始化根字典</span>    NSMutableDictionary *rootDict = nil;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 初始化存储用户信息数组</span>    NSMutableArray *dataList = nil;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 文件管理</span>    NSFileManager *fileManager = [NSFileManager defaultManager];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 判断沙盒中是否存在属性列表</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([fileManager fileExistsAtPath:plistPath]) {        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 存在</span>        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取plist文件初始化字典</span>        rootDict = [NSMutableDictionary dictionaryWithContentsOfFile:plistPath];        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 根据字典里面的键初始化数组</span>        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([rootDict.allKeys containsObject:dataKey]) {            dataList = [NSMutableArray arrayWithArray:rootDict[dataKey]];        }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{            dataList = [NSMutableArray array];        }    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 沙盒中不存在属性列表</span>        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 初始化根字典</span>        rootDict = [NSMutableDictionary dictionary];        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 初始化数组</span>        dataList = [NSMutableArray array];    }    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 初始化用户信息字典</span>    NSMutableDictionary *dictInfomation = [NSMutableDictionary dictionary];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 录入用户信息</span>    [dictInfomation setObject:self.nameTextField.text forKey:nameKey];    [dictInfomation setObject:self.addressTextField.text forKey:addressKey];    [dictInfomation setObject:self.phoneNumberTextField.text forKey:phoneNumberKey];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 将用户姓名作为键，用户信息作为详情存入一个字典</span>    NSDictionary *userInfoDict = @{self.nameTextField.text : dictInfomation};    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 将用户信息存入数组</span>    [dataList addObject:userInfoDict];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 将存放用户信息的数组放入根字典</span>    [rootDict setObject:dataList forKey:dataKey];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 将根字典写入沙盒路劲</span>    [rootDict writeToFile:plistPath atomically:YES];    NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"save data success in plist!"</span>);}- (IBAction)plist_read:(UIButton *)sender {    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 沙盒路径</span>    NSString *sandboxPath = [DOCUMENT_PATH stringByAppendingString:plistName];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取bundle路径</span>    NSString *bundlePath = [[NSBundle mainBundle] pathForAuxiliaryExecutable:plistName];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 根字典</span>    NSMutableDictionary *rootDict = nil;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 文件管理</span>    NSFileManager *fileManger = DEFAULT_FILEMANAGER;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 判断沙盒中是否存在</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([fileManger fileExistsAtPath:sandboxPath]) {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 存在</span>        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 沙盒中存在就从沙盒中的属性列表文件初始化</span>        rootDict = [[NSMutableDictionary alloc] initWithContentsOfFile:sandboxPath];    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 没有就从bundle中的属性列表文件初始化</span>        rootDict = [[NSMutableDictionary alloc] initWithContentsOfFile:bundlePath];    }    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 打印字典信息</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (((NSMutableArray *)rootDict[dataKey]).count == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"there is no data in plist!"</span>);    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"plist data = %@"</span>, rootDict[dataKey]);    }    <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**     *  这里取到对应的plist字典之后也可直接进行增删改，直接对字典操作就可以了，然后再写入沙盒就OK。     */</span>    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//修改字典，并写入沙盒中，覆盖掉原来的属性列表文件</span>    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*    [rootDict setObject:(id) forKey:(id<NSCopying>)]; // 添、改    [rootDict removeObjectForKey:(id)]; // 删    [rootDict writeToFile:sandboxPath atomically:YES]; // 写入沙盒     */</span>}- (IBAction)plist_delete:(UIButton *)sender {    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// plist沙盒路径</span>    NSString *sandboxPath = [DOCUMENT_PATH stringByAppendingString:plistName];    NSMutableDictionary *rootDic = [[NSMutableDictionary alloc] initWithContentsOfFile:sandboxPath];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 删除所有元素</span>    [rootDic[@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"data"</span>] removeAllObjects];    [rootDic writeToFile:sandboxPath atomically:YES];    NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"delete data success in plist!"</span>);    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 删除整个plist文件</span>    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*    NSFileManager *fileManager = [NSFileManager defaultManager];    if ([fileManager removeItemAtPath:sandboxPath error:nil]) {        NSLog(@"plist文件删除成功!");    }     */</span>}#pragma mark - 数据判断<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 判断 */</span>- (BOOL)isEmptyData{    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (self.nameTextField.text.length == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || self.addressTextField.text.length == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || self.phoneNumberTextField.text.length == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> YES;    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> NO;    }}#pragma mark - responds touches- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {    [self.view endEditing:YES];}<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@end</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li><li style="box-sizing: border-box; padding: 0px 5px;">136</li><li style="box-sizing: border-box; padding: 0px 5px;">137</li><li style="box-sizing: border-box; padding: 0px 5px;">138</li><li style="box-sizing: border-box; padding: 0px 5px;">139</li><li style="box-sizing: border-box; padding: 0px 5px;">140</li><li style="box-sizing: border-box; padding: 0px 5px;">141</li><li style="box-sizing: border-box; padding: 0px 5px;">142</li><li style="box-sizing: border-box; padding: 0px 5px;">143</li><li style="box-sizing: border-box; padding: 0px 5px;">144</li><li style="box-sizing: border-box; padding: 0px 5px;">145</li><li style="box-sizing: border-box; padding: 0px 5px;">146</li><li style="box-sizing: border-box; padding: 0px 5px;">147</li><li style="box-sizing: border-box; padding: 0px 5px;">148</li><li style="box-sizing: border-box; padding: 0px 5px;">149</li><li style="box-sizing: border-box; padding: 0px 5px;">150</li><li style="box-sizing: border-box; padding: 0px 5px;">151</li><li style="box-sizing: border-box; padding: 0px 5px;">152</li><li style="box-sizing: border-box; padding: 0px 5px;">153</li><li style="box-sizing: border-box; padding: 0px 5px;">154</li><li style="box-sizing: border-box; padding: 0px 5px;">155</li><li style="box-sizing: border-box; padding: 0px 5px;">156</li><li style="box-sizing: border-box; padding: 0px 5px;">157</li><li style="box-sizing: border-box; padding: 0px 5px;">158</li><li style="box-sizing: border-box; padding: 0px 5px;">159</li><li style="box-sizing: border-box; padding: 0px 5px;">160</li><li style="box-sizing: border-box; padding: 0px 5px;">161</li><li style="box-sizing: border-box; padding: 0px 5px;">162</li><li style="box-sizing: border-box; padding: 0px 5px;">163</li><li style="box-sizing: border-box; padding: 0px 5px;">164</li><li style="box-sizing: border-box; padding: 0px 5px;">165</li><li style="box-sizing: border-box; padding: 0px 5px;">166</li><li style="box-sizing: border-box; padding: 0px 5px;">167</li><li style="box-sizing: border-box; padding: 0px 5px;">168</li><li style="box-sizing: border-box; padding: 0px 5px;">169</li><li style="box-sizing: border-box; padding: 0px 5px;">170</li><li style="box-sizing: border-box; padding: 0px 5px;">171</li><li style="box-sizing: border-box; padding: 0px 5px;">172</li><li style="box-sizing: border-box; padding: 0px 5px;">173</li><li style="box-sizing: border-box; padding: 0px 5px;">174</li><li style="box-sizing: border-box; padding: 0px 5px;">175</li><li style="box-sizing: border-box; padding: 0px 5px;">176</li><li style="box-sizing: border-box; padding: 0px 5px;">177</li><li style="box-sizing: border-box; padding: 0px 5px;">178</li></ul>

              NSUserDefaults代码示例

              <code class="hljs objectivec has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#import <span class="hljs-title" style="box-sizing: border-box;">"ViewController.h"</span></span><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@interface</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">ViewController</span> ()</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@property</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">strong</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">nonatomic</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">IBOutlet</span> UITextField *nameTextField; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 姓名 */</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@property</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">strong</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">nonatomic</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">IBOutlet</span> UITextField *addressTextField; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 地址 */</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@property</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">strong</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">nonatomic</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">IBOutlet</span> UITextField *phoneNumberTextField; <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 电话 */</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@end</span><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@implementation</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">ViewController</span></span>- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)viewDidLoad {    [<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span> viewDidLoad];}<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#pragma mark - userDefaults</span>- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">IBAction</span>)userdefaults_save:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">UIButton</span> *)sender {    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 判断是否为空</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span> isEmptyData]) {        <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSLog</span>(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"message is empty, save error!"</span>);        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>;    }    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取NSUserDefaults单例</span>    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSUserDefaults</span> *defalusts = [<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSUserDefaults</span> standardUserDefaults];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 存值</span>    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*    [defalusts setObject:self.nameTextField.text forKey:@"name"];    [defalusts setObject:self.addressTextField.text forKey:@"address"];    [defalusts setObject:self.phoneNumberTextField.text forKey:@"phone"];     */</span>    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSMutableArray</span> *datas = [<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSMutableArray</span> arrayWithArray:[defalusts objectForKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"datas"</span>]];    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSDictionary</span> *dict = @{@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name"</span>:<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.nameTextField</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.text</span>, @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"address"</span>:<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.addressTextField</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.text</span>, @<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"phone"</span>:<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.phoneNumberTextField</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.text</span>};    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (datas) {        [datas addObject:dict];        [defalusts setObject:datas forKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"datas"</span>];    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSArray</span> *datas = @[dict];        [defalusts setObject:datas forKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"datas"</span>];    }    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 同步数据</span>    [defalusts synchronize];    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSLog</span>(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"save data success in defaults!"</span>);}- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">IBAction</span>)userdefaults_read:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">UIButton</span> *)sender {    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSUserDefaults</span> *defaults = [<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSUserDefaults</span> standardUserDefaults];    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSMutableArray</span> *datas = [<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSMutableArray</span> arrayWithArray:[defaults objectForKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"datas"</span>]];    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (datas<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.count</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {        <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSLog</span>(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"%@"</span>, datas);    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSLog</span>(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"there is no data in defaults!"</span>);    }}- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">IBAction</span>)userdefaults_delete:(<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">UIButton</span> *)sender {    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSUserDefaults</span> *defaults = [<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSUserDefaults</span> standardUserDefaults];    [defaults removeObjectForKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"datas"</span>];    [defaults synchronize];    <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSLog</span>(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"delete data success in defaults!"</span>);}<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#pragma mark - 数据判断</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 判断 */</span>- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">BOOL</span>)isEmptyData{    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.nameTextField</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.text</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.length</span> == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.addressTextField</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.text</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.length</span> == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.phoneNumberTextField</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.text</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.length</span> == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">YES</span>;    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">NO</span>;    }}<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#pragma mark - responds touches</span>- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {    [<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">self</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">.view</span> endEditing:<span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">YES</span>];}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@end</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li></ul>

              Archive对象归档代码示例

              • 自定类归档需遵守NSCoding协议，此处对Person类进行归档。

              steps 1 -> Person.h文件

              <code class="hljs objectivec has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#import <span class="hljs-title" style="box-sizing: border-box;"><Foundation/Foundation.h></span></span><span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@interface</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">Person</span> : <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">NSObject</span> <<span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">NSCoding</span>></span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@property</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">nonatomic</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">strong</span>)<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *name;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@property</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">nonatomic</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">strong</span>)<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *address;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@property</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">nonatomic</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">strong</span>)<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *phoneNumber;- (<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">NSString</span> *)description;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">@end</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li></ul>

              steps 1 -> Person.m文件

              <code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">#<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Person.h"</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@implementation</span> Person<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** *  当将一个自定义对象保存到文件的时候就会调用该方法； *  在该方法中，说明如何存储自定义对象的属性； *  也就是说在该方法中说清楚存储自定义对象的哪些属性； * * <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> aCoder */</span>- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)encodeWithCoder:(NSCoder *)aCoder {    [aCoder encodeObject:self.name forKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name"</span>];    [aCoder encodeObject:self.address forKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"address"</span>];    [aCoder encodeObject:self.phoneNumber forKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"phoneNumber"</span>];}<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** *  当文件中读取一个对象的时候就会调用该方法； *  在该方法中说明如何读取保存在文件中的对象； *  也就是说在该方法中说清楚怎么读取文件中的对象 * * <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> aDecoder * * <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @return</span> */</span>- (id)initWithCoder:(NSCoder *)aDecoder {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (self = [<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span> init]) {        self.name = [aDecoder decodeObjectForKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name"</span>];        self.address = [aDecoder decodeObjectForKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"address"</span>];        self.phoneNumber = [aDecoder decodeObjectForKey:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"phoneNumber"</span>];    }    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> self;}- (NSString *)description {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> [NSString stringWithFormat:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name = %@, address = %@, phoneNumber = %@"</span>, self.name, self.address, self.phoneNumber];}<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@end</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li></ul>

              steps 1 -> ViewController.m文件

              <code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">#<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"ViewController.h"</span>#<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Person.h"</span><span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 打印路径 */</span>#define NSLOG_DOCUMENTS_PATH  NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"%@"</span>, NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject);<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 沙盒地址 */</span>#define DOCUMENT_PATH NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 文件管理类 */</span>#define DEFAULT_FILEMANAGER [NSFileManager defaultManager]<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@interface</span> ViewController ()<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@property</span> (strong, nonatomic) IBOutlet UITextField *nameTextField; <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 姓名 */</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@property</span> (strong, nonatomic) IBOutlet UITextField *addressTextField; <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 地址 */</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@property</span> (strong, nonatomic) IBOutlet UITextField *phoneNumberTextField; <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 电话 */</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@end</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@implementation</span> ViewController- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)viewDidLoad {    [<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span> viewDidLoad];}#pragma mark - archive<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/** *  归档：直接把一个对象弄成一个文件 *  遵循<NSCoding>的类的对象都可以被归档 *  自定义类若想归档需遵守<NSCoding>协议 *  归档方法： + (BOOL)archiveRootObject:(id)rootObject toFile:(NSString *)path; * */</span>- (IBAction)archive_save:(UIButton *)sender {    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([self isEmptyData]) {        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"message is empty, save error!"</span>);        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>;    }    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 创建对象</span>    Person *person = [[Person alloc] init];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 对象赋值</span>    person.name = self.nameTextField.text;    person.address = self.addressTextField.text;    person.phoneNumber = self.phoneNumberTextField.text;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取文件路径</span>    NSString *sandboxPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 归档路径</span>    NSString *archivePath = [sandboxPath stringByAppendingString:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/personMsg"</span>];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 将自定义对象保存到文件中</span>    [NSKeyedArchiver archiveRootObject:person toFile:archivePath];    NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"archive success!"</span>);}- (IBAction)archive_read:(UIButton *)sender {    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取文件路径</span>    NSString *archivepath = [DOCUMENT_PATH stringByAppendingString:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/personMsg"</span>];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 从文件读取对象</span>    Person *person = [NSKeyedUnarchiver unarchiveObjectWithFile:archivepath];    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (person) {        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"person:%@"</span>, person);    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"there is no archived data!"</span>);    }}- (IBAction)archive_delete:(UIButton *)sender {    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取路径</span>    NSString *archivepath = [DOCUMENT_PATH stringByAppendingString:@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/personMsg"</span>];    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 文件管理器</span>    NSFileManager *fileManager = [NSFileManager defaultManager];    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> ([fileManager removeItemAtPath:archivepath error:nil]) {        NSLog(@<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"delete archive success!"</span>);    }}#pragma mark - 数据判断<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**< 判断 */</span>- (BOOL)isEmptyData{    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (self.nameTextField.text.length == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || self.addressTextField.text.length == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || self.phoneNumberTextField.text.length == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> YES;    }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> NO;    }}#pragma mark - responds touches- (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {    [self.view endEditing:YES];}<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@end</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li></ul>



        0 0
        新淘宝店如何破零知乎 新淘宝店如何破零知乎
        原创粉丝点击
        热门IT博客
        java程序 笔记java程序 笔记
        大脚插件 for mac大脚插件 for mac
        ios视频录制软件
        Java大小写转换
        淘宝网人工投诉电话
        vr教育软件
        女朋友大胸 体验 知乎
        免费淘宝客推广软件
        吉林大学网络教育平台
        不用网络的音乐播放器
        淘宝买的衣服没有吊牌
        指弹中国淘宝店
        淘宝宝贝在线人数
        高中地理视频教学软件
        星际战甲索玛p数据
        photography软件
        阿里云邮箱 别名管理
        linux 显示日志级别
        淘宝推广时间设置
        非农数据哪里公布
        热门问题 老师的惩罚 人脸识别 我在镇武司摸鱼那些年 重生之率土为王 我在大康的咸鱼生活 盘龙之生命进化 天生仙种 凡人之先天五行 春回大明朝 姑娘不必设防，我是瞎子 保利拍卖 保利科技 保利玫瑰湾 保利房价 保利西岸 保利天玺 保利影院 保利香雪 保利楼盘 保利地暖 保利世贸 保利罗兰 保利别墅 保利百合 保利春天 保利公寓 保利花城 保利高尔夫 保利房产 保利茉莉 保利198 保利洲际 保利管 保利山庄 保利嘉园 保利雅苑 保利投资 保利酒店 保利新房 保利梧桐 保利二期 保利房子 保利豪园 保利物流 保利梧桐雨 保利斯塔 保利商业 保利红酒 保利华府 保利拍卖会 保利叶之林

        程序博客网，程序员的互联网技术博客家园。csdn论坛精品 msdn技术资料都在这里