OC一个简单的模型的创建

#import <Foundation/Foundation.h>
@interface QZApp : NSObject
@property(nonatomic,copy)NSString *name;
@property(nonatomic,copy)NSString *icon;
@property(nonatomic,copy)NSString *download;

+(instancetype)appWithDict:(NSDictionary *)dict;

@end

#import "QZApp.h"
@implementation QZApp
+(instancetype)appWithDict：(NSDictionary *)dict
{
QZApp *app = [[self alloc] init];
[app setValuesForKeysWithDictionary:dict];
return app;
}