oc 中一個典型的字典轉模型樣板格式

本身處理數據模型時，此種格式，無論屬性是否爲空，均可以任意使用，由於使用了排空方法，十分好用，強烈推薦，代碼以下：

模型.h文件中：

#import <Foundation/Foundation.h>

@class User;

@interface Status : NSObject

@property (nonatomic,copy) NSString *created_at;

@property (nonatomic,assign) int64_t id;

@property (nonatomic,copy) NSString *text;

@property (nonatomic,copy) NSString *source;

@property (nonatomic,strong) User *user;

//配圖數組

@property (nonatomic,strong) NSArray *pic_urls;

@property (nonatomic,strong) Status * retweeted_status;

//配圖字符串數組

//@property (nonatomic,strong) NSMutableArray *pic_strs;

 

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

 

- (instancetype)initWithDict:(NSDictionary *)dict;

 

@end

 

模型.m文件中：

#import "Status.h"

#import "User.h"

 

@implementation Status

 

- (instancetype)initWithDict:(NSDictionary *)dict

{   

    self = [super init];

    if (self) {

 

[self setValuesForKeysWithDictionary:dict];

 

       // _ids = [NSString stringWithFormat:@"%@",dict[@"id"]];

//        self.created_at = dict[@"created_at"];

//         self.id = dict[@"id"];

//        self.source = dict[@"source"];

//        self.text = dict[@"text"];

//        self.pic_urls = dict[@"pic_urls"];

   //      self.user = [User userWithDict:dict[@"user"]];

       // self.retweeted_status = [Status statusWithDict:dict[@"retweeted_status"]];

        //self.pic_strs = dict[@"pic_strs"];

       

    }

   

    return self;

}

 

+ (instancetype)statusWithDict:(NSDictionary *)dict{

    return [[self alloc] initWithDict:dict];

}

 

- (void)setValue:(nullable id)value forKey:(nonnull NSString *)key{

    if ([key  isEqual: @"user"]) {

        self.user = [User userWithDict:value];

        return;

    }

    

    if ([key isEqualToString:@"retweeted_status"]) {

        self.retweeted_status = [Status statusWithDict:value];

        return;

    }

    [super setValue:value forKey:key];

}

//排空機制：當key value爲空時，程序不會崩潰

- (void)setValue:(nullable id)value forUndefinedKey:(nonnull NSString *)key{

    

}