runtime +kvo实现快速归档 解档操作

先看一个初始版的

`
 
 
 
  
 
(void)viewDidLoad {
 [super viewDidLoad];
 
Person *person = [[Person alloc]init];
 person.name = @"ezreal";
 person.height = @"134";
 NSString *filePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
 
NSString *path = [filePath stringByAppendingPathComponent:@"test.plist"];
 
BOOL result = [NSKeyedArchiver archiveRootObject:person toFile:path];
 if (result) {
 NSLog(@"success");
 }else
 {
 NSLog(@"fail");
 }
 NSLog(@"%@",filePath);
 
 
 
 
 
}
 `

`
 -(void)encodeWithCoder:(NSCoder *)aCoder
 {
 [aCoder encodeObject:self.name forKey:@"name"];
 [aCoder encodeObject:self.height forKey:@"height"];
 }
 
 
//当从文件中读取一个对象的时候就会调用方法
 //在该方法中说明如何读取保存在文件中的对象
 
 
-(instancetype)initWithCoder:(NSCoder *)aDecoder
 {
 if (self = [super init]) {
 self.name = [aDecoder decodeObjectForKey:@"name"];
 self.height = [aDecoder decodeObjectForKey:@"height"];
 }
 return self;
 }
 `

runtime版本

`
 // 返回self的所有对象名称
 
 
 
  
 
(NSArray *)propertyOfSelf{
 unsigned int count = 0;
 
// 1. 获得类中的所有成员变量
 Ivar *ivarList = class_copyIvarList(self, &count);
 
NSMutableArray *properNames =[NSMutableArray array];
 for (int i = 0; i < count; i++) {
 Ivar ivar = ivarList[i];
 
  // 获得成员属性名
  NSString *name = [NSString stringWithUTF8String:ivar_getName(ivar)];
  
[properNames addObject:key];
 
}
 free(ivarList);
 return [properNames copy];
 }
 
 
 
 
 
// 归档
 
 
 
  
 
(void)encodeWithCoder:(NSCoder *)enCoder{
 // 取得所有成员变量名
 NSArray *properNames = [[self class] propertyOfSelf];
 
for (NSString *propertyName in properNames) {
 [enCoder encodeObject:[self valueForKey:propertyName] forKey:propertyName];
 }
 }
 
 
 
 
 
// 解档
 
 
 
  
 
(id)initWithCoder:(NSCoder *)aDecoder{
 // 取得所有成员变量名
 NSArray *properNames = [[self class] propertyOfSelf];
 
for (NSString *propertyName in properNames) {
 
  [self setValue:[aDecoder decodeObjectForKey:propertyName] forKey:propertyName];
 
}
 return self;
 }
 
 
 
 
 
`