首先创建一个字典：
NSDictionary *dict = @{
@"name":@"jack",
@"address":@"beijingbeijing",
@"phone":@"13111122211",
@"age":@12,
@"weight":@45,
@"height":@170,
};
根据key来记录property的属性名称，创建一个模型：
@interface TestModel : NSObject
@property(nonatomic, copy) NSString *name;
@property(nonatomic, copy) NSString *address;
@property(nonatomic, copy) NSString *phone;
@property(nonatomic, assign) NSInteger age;
@property(nonatomic, assign) NSInteger weight;
@property(nonatomic, assign) NSInteger height;
@end
然后创建一个NSObject的分类，当我们要使用的时候直接导入就可以使用：
@interface NSObject (Model)
+ (instancetype)initWithDictionaryForModel:(NSDictionary *)dic;
@end
根据runtime来进行赋值：
#import "NSObject+Model.h"
#import <objc/runtime.h>
@implementation NSObject (Model)
+ (instancetype)initWithDictionaryForModel:(NSDictionary *)dic {
id myObj = [[self alloc] init];
unsigned int outCount;
//获取类中所有成员属性
objc_property_t *arrPropertys = class_copyPropertyList([self class], &outCount);
for (NSInteger i=0; i<outCount; i++) {
//获取属性名字符串
objc_property_t property = arrPropertys[i];
//model中的属性名
NSString *propertyName = [NSString stringWithUTF8String:property_getName(property)];
id propertyValue = dic[propertyName];
if (propertyValue != nil) {
[myObj setValue:propertyValue forKey:propertyName];
}
}
//注意在runtime获取属性的时候，并不是arc 需要释放
free(arrPropertys);
return myObj;
}
@end
使用实例
NSDictionary *dict = @{
@"name":@"jack",
@"address":@"beijingbeijing",
@"phone":@"13111122211",
@"age":@12,
@"weight":@45,
@"height":@170,
};
TestModel *model = [TestModel initWithDictionaryForModel:dict];
打个断点看下结果：
