最近在开发SDK,我开放给客户model类设置信息后，对象转字典，POST给后台。
思路：通过Runtime访问属性列表，快速转换成字典。
FRObjectToDictionary.h类
#import <Foundation/Foundation.h>
@interface FRObjectToDictionary : NSObject
+ (NSDictionary*)getObjectData:(id)obj;
@end
FRObjectToDictionary.m类
#import "FRObjectToDictionary.h"
#import <objc/runtime.h>
@implementation FRObjectToDictionary
+ (NSDictionary*)getObjectData:(id)obj
{
NSMutableDictionary *dic = [NSMutableDictionary dictionary];
unsigned int propsCount;
objc_property_t *props = class_copyPropertyList([obj class], &propsCount);//获得属性列表
for(int i = 0;i < propsCount; i++)
{
objc_property_t prop = props[i];
NSString *propName = [NSString stringWithUTF8String:property_getName(prop)];//获得属性的名称
id value = [obj valueForKey:propName];//kvc读值
if(value == nil)
{
value = [NSNull null];
}
else
{
value = [self getObjectInternal:value];//自定义处理数组，字典，其他类
}
[dic setObject:value forKey:propName];
}
return dic;
}
+ (id)getObjectInternal:(id)obj
{
if([obj isKindOfClass:[NSString class]]
|| [obj isKindOfClass:[NSNumber class]]
|| [obj isKindOfClass:[NSNull class]])
{
return obj;
}
if([obj isKindOfClass:[NSArray class]])
{
NSArray *objarr = obj;
NSMutableArray *arr = [NSMutableArray arrayWithCapacity:objarr.count];
for(int i = 0;i < objarr.count; i++)
{
[arr setObject:[self getObjectInternal:[objarr objectAtIndex:i]] atIndexedSubscript:i];
}
return arr;
}
if([obj isKindOfClass:[NSDictionary class]])
{
NSDictionary *objdic = obj;
NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:[objdic count]];
for(NSString *key in objdic.allKeys)
{
[dic setObject:[self getObjectInternal:[objdic objectForKey:key]] forKey:key];
}
return dic;
}
return [self getObjectData:obj];
}
@end
调用时：
[FRObjectToDictionary getObjectData:aModel]