iOS快速归档存储自定义对象

前言

前几天做项目,需要保存自定义的对象,也就是数据Model,之前也在这篇文章里讲到过存储自定义对象的方法,但是那种方法感觉太麻烦了,需要每次归档model的每一个属性,如果需要归档的model不多,那这种方法还是ok的,如果项目中需要归档的model比较多的话感觉会很麻烦,所以就想了个工具类来快速实现归档自定义对象

快速归档

  • 这个方法是在学习MJExtension源码的时候想到的,其实MJExtension已经实现了这种功能,
  • 这个工具类用到的知识点很简单, runtimekvc而已

这个工具类很简单,目录如下

iOS快速归档存储自定义对象_第1张图片
C087F921-07B7-47E2-BC08-5AA279F61DA9.png
使用方法

在自定义的Model的.m文件引入#import "NSObject+WYCoding.h"文件,然后书写WYCodingImplementation宏就ok了,如下图所示

iOS快速归档存储自定义对象_第2张图片
160C9D21-93EF-4B1C-8053-03A530A4C63D.png

这里提供了三个方法来自定义归档的属性

  • + (NSArray *)wy_allowedCodingPropertyNames;允许归档的属性数组
  • + (NSArray *)wy_ignoredCodingPropertyNames;忽略归档的属性数组
  • + (BOOL)wy_ignoreCodingSuperClassPropertyNames;是否忽略归档父类的属性

归档Model

这里自定义了一个Person类,定义了不同类型的属性如下


@property (nonatomic , copy) NSString *name;
@property (nonatomic , assign) NSInteger age;
@property (nonatomic , assign) long longValue;
@property (nonatomic , assign) double doub;
@property (nonatomic , assign) NSUInteger uint;
@property (nonatomic , strong) NSArray *titles;
@property (nonatomic , strong) Student *stu;
@property (nonatomic , copy) NSDictionary *data;
@property (nonatomic , assign) CGFloat floatNumber;

开始归档Person



- (IBAction)archPerson:(id)sender {
    Person *person = [[Person alloc] init];
    person.name = @"personName";
    person.age = 100;
    person.titles = @[@"jack",@"mattt"];
    person.data = @{@"list":@[@{@"id":@"187",
                                @"time":@"2017.4.21"}],
                    @"success":@"ture"};
    person.longValue = 69;
    person.doub = 666.66;
    person.uint =  90;
    person.floatNumber = 10.55;
    
    Student *stu = [[Student alloc] init];
    stu.name = @"person的学生";
    stu.age = 99;
    
    person.stu = stu;
    
    NSString *filePath = [[WYFileManager getDocumentFilePath] stringByAppendingPathComponent:@"person"];
    //保存
    [WYFileManager setCustomObject:person forKey:@"person" filePath:filePath];
    
    
    _currentKey = @"person";
    _currentModelButton = sender;
}

解档Person


- (IBAction)unarchPerson:(id)sender {
    
    Person *person = [WYFileManager getCustomObjectWithKey:@"person"];
    
    
    NSLog(@"person --- name: %@  age: %ld longValue: %ld doub: %ld uint: %lu floatNumber: %.2f   student`s properties name: %@ age: %ld    ", person.name , (long)person.age, person.longValue, (long)person.doub , (unsigned long)person.uint,person.floatNumber, person.stu.name, person.stu.age);
    
    
    NSDictionary *data = person.data;
    
    NSLog(@"字典  ---  %@", data);
    
    for (NSString *title in person.titles) {
        
        NSLog(@"数组· %@",title);
    }
}

打印信息为

2017-05-01 19:25:02.600 WYCoding[10163:2327318] person --- name: personName  age: 100 longValue: 69 doub: 666 uint: 90  10.55   student`s properties name: person的学生 age: 99    
2017-05-01 19:25:02.600 WYCoding[10163:2327318] 字典  ---  {
    list =     (
                {
            id = 187;
            time = "2017.4.21";
        }
    );
    success = ture;
}
2017-05-01 19:25:02.601 WYCoding[10163:2327318] 数组· jack
2017-05-01 19:25:02.601 WYCoding[10163:2327318] 数组· mattt
  • 其中WYFileManager文件是我自己写的存储Model至沙盒文件下的工具类,可以自己实现
最后

因为这个工具是学习 MJExtension实现的,如果项目中有用到MJExtension框架的话可以直接使用MJ框架中的方法

MJ的使用

只需要在自定义model的.m文件中书写MJExtensionCodingImplementation宏,就可以了

#import "MJExtension.h"
@implementation Person
// 宏实现
MJExtensionCodingImplementation
@end

归档Person

- (IBAction)archiver:(id)sender {
    Person *person2 = [[Person alloc] init];
    person2.name = @"dev";
    person2.age = 28;
    person2.titles = @[@"Tom",@"Jerry"];
    
    
    [WYFileManager setCustomObject:person2 key:@"person2"];
}

解档Person

- (IBAction)unarchiver:(id)sender {
    Person *person2 = [WYFileManager getCustomObjectWithKey:@"person2"];
    
    NSLog(@"name %@  age %ld ", person2.name   , (long)person2.age);
    
    for (NSString *title in person2.titles) {
        
        NSLog(@"%@",title);
    }
}

打印信息为


2017-05-01 19:53:35.206 testMJExtension[10437:2353875] name dev  age 28 
2017-05-01 19:53:35.206 testMJExtension[10437:2353875] Tom
2017-05-01 19:53:35.207 testMJExtension[10437:2353875] Jerry

代码下载地址:Github下载

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