标签：style blog color 使用 io for 文件 div log
// .h文件
#import <Foundation/Foundation.h> @interface NSCodingProtocolHelper : NSObject +(void)encodeWithCoder:(NSCoder *)aCoder andObj:(id)obj; +(id)initWithCoder:(NSCoder *)aDecoder andObj:(id)obj; @end
// .m文件
#import "NSCodingProtocolHelper.h" #import <objc/runtime.h> //反射需要用到的头文件 @implementation NSCodingProtocolHelper +(void)encodeWithCoder:(NSCoder *)aCoder andObj:(id)obj { unsigned int outCount; objc_property_t *properties = class_copyPropertyList([obj class], &outCount); for (int i = 0; i < outCount; i++) { objc_property_t *thisProperty = properties + i; NSString *propertyName = [NSString stringWithUTF8String:property_getName(*thisProperty)]; [aCoder encodeObject:[obj valueForKey:propertyName] forKey:propertyName]; } } +(id)initWithCoder:(NSCoder *)aDecoder andObj:(id)obj { unsigned int outCount; objc_property_t *properties = class_copyPropertyList([obj class], &outCount); for (int i = 0; i < outCount; i++) { objc_property_t *thisProperty = properties + i; NSString *propertyName = [NSString stringWithUTF8String:property_getName(*thisProperty)]; [obj setValue:[aDecoder decodeObjectForKey:propertyName] forKey:propertyName]; } return obj; } @end
使用方法：
在要实现NSCodingProtocle的类中重写 initWithCoder: 和encodeWithCoder: 方法，
例如：
-(void) encodeWithCoder:(NSCoder *)aCoder { [NSCodingProtocolHelper encodeWithCoder:aCoder andObj:self]; } -(id)initWithCoder:(NSCoder *)aDecoder { return [NSCodingProtocolHelper initWithCoder:aDecoder andObj:selfl]; }
标签：style blog color 使用 io for 文件 div log
原文地址：http://www.cnblogs.com/1oo1/p/3946756.html
