MJExtension.h MJConst.h MJConst.m MJFoundation.h MJFoundation.m MJProperty.h MJProperty.m MJType.h MJType.m NSObject+MJCoding.h NSObject+MJCoding.m NSObject+MJProperty.h NSObject+MJProperty.m NSObject+MJKeyValue.h NSObject+MJKeyValue.m

typedef enum { SexMale, SexFemale } Sex; @interface User : NSObject @property (copy, nonatomic) NSString *name; @property (copy, nonatomic) NSString *icon; @property (assign, nonatomic) unsigned int age; @property (copy, nonatomic) NSString *height; @property (strong, nonatomic) NSNumber *money; @property (assign, nonatomic) Sex sex; @property (assign, nonatomic, getter=isGay) BOOL gay; @end /***********************************************/ NSDictionary *dict = @{ @"name" : @"Jack", @"icon" : @"lufy.png", @"age" : @20, @"height" : @"1.55", @"money" : @100.9, @"sex" : @(SexFemale), @"gay" : @"true" // @"gay" : @"1" // @"gay" : @"NO" }; // JSON -> User User *user = [User mj_objectWithKeyValues:dict]; NSLog(@"name=%@, icon=%@, age=%zd, height=%@, money=%@, sex=%d, gay=%d", user.name, user.icon, user.age, user.height, user.money, user.sex, user.gay); // name=Jack, icon=lufy.png, age=20, height=1.550000, money=100.9, sex=1

// 1.Define a JSONString NSString *jsonString = @"{\"name\":\"Jack\", \"icon\":\"lufy.png\", \"age\":20}"; // 2.JSONString -> User User *user = [User mj_objectWithKeyValues:jsonString]; // 3.Print user's properties NSLog(@"name=%@, icon=%@, age=%d", user.name, user.icon, user.age); // name=Jack, icon=lufy.png, age=20

@interface Status : NSObject @property (copy, nonatomic) NSString *text; @property (strong, nonatomic) User *user; @property (strong, nonatomic) Status *retweetedStatus; @end /***********************************************/ NSDictionary *dict = @{ @"text" : @"Agree!Nice weather!", @"user" : @{ @"name" : @"Jack", @"icon" : @"lufy.png" }, @"retweetedStatus" : @{ @"text" : @"Nice weather!", @"user" : @{ @"name" : @"Rose", @"icon" : @"nami.png" } } }; // JSON -> Status Status *status = [Status mj_objectWithKeyValues:dict]; NSString *text = status.text; NSString *name = status.user.name; NSString *icon = status.user.icon; NSLog(@"text=%@, name=%@, icon=%@", text, name, icon); // text=Agree!Nice weather!, name=Jack, icon=lufy.png NSString *text2 = status.retweetedStatus.text; NSString *name2 = status.retweetedStatus.user.name; NSString *icon2 = status.retweetedStatus.user.icon; NSLog(@"text2=%@, name2=%@, icon2=%@", text2, name2, icon2); // text2=Nice weather!, name2=Rose, icon2=nami.png

@interface Ad : NSObject @property (copy, nonatomic) NSString *image; @property (copy, nonatomic) NSString *url; @end @interface StatusResult : NSObject /** Contatins status model */ @property (strong, nonatomic) NSMutableArray *statuses; /** Contatins ad model */ @property (strong, nonatomic) NSArray *ads; @property (strong, nonatomic) NSNumber *totalNumber; @end /***********************************************/ // Tell MJExtension what type model will be contained in statuses and ads. [StatusResult mj_setupObjectClassInArray:^NSDictionary *{ return @{ @"statuses" : @"Status", // @"statuses" : [Status class], @"ads" : @"Ad" // @"ads" : [Ad class] }; }]; // Equals: StatusResult.m implements +mj_objectClassInArray method. NSDictionary *dict = @{ @"statuses" : @[ @{ @"text" : @"Nice weather!", @"user" : @{ @"name" : @"Rose", @"icon" : @"nami.png" } }, @{ @"text" : @"Go camping tomorrow!", @"user" : @{ @"name" : @"Jack", @"icon" : @"lufy.png" } } ], @"ads" : @[ @{ @"image" : @"ad01.png", @"url" : @"http://www.ad01.com" }, @{ @"image" : @"ad02.png", @"url" : @"http://www.ad02.com" } ], @"totalNumber" : @"2014" }; // JSON -> StatusResult StatusResult *result = [StatusResult mj_objectWithKeyValues:dict]; NSLog(@"totalNumber=%@", result.totalNumber); // totalNumber=2014 // Printing for (Status *status in result.statuses) { NSString *text = status.text; NSString *name = status.user.name; NSString *icon = status.user.icon; NSLog(@"text=%@, name=%@, icon=%@", text, name, icon); } // text=Nice weather!, name=Rose, icon=nami.png // text=Go camping tomorrow!, name=Jack, icon=lufy.png // Printing for (Ad *ad in result.ads) { NSLog(@"image=%@, url=%@", ad.image, ad.url); } // image=ad01.png, url=http://www.ad01.com // image=ad02.png, url=http://www.ad02.com

@interface Bag : NSObject @property (copy, nonatomic) NSString *name; @property (assign, nonatomic) double price; @end @interface Student : NSObject @property (copy, nonatomic) NSString *ID; @property (copy, nonatomic) NSString *desc; @property (copy, nonatomic) NSString *nowName; @property (copy, nonatomic) NSString *oldName; @property (copy, nonatomic) NSString *nameChangedTime; @property (strong, nonatomic) Bag *bag; @end /***********************************************/ // How to map [Student mj_setupReplacedKeyFromPropertyName:^NSDictionary *{ return @{ @"ID" : @"id", @"desc" : @"desciption", @"oldName" : @"name.oldName", @"nowName" : @"name.newName", @"nameChangedTime" : @"name.info[1].nameChangedTime", @"bag" : @"other.bag" }; }]; // Equals: Student.m implements +mj_replacedKeyFromPropertyName method. NSDictionary *dict = @{ @"id" : @"20", @"desciption" : @"kids", @"name" : @{ @"newName" : @"lufy", @"oldName" : @"kitty", @"info" : @[ @"test-data", @{ @"nameChangedTime" : @"2013-08" } ] }, @"other" : @{ @"bag" : @{ @"name" : @"a red bag", @"price" : @100.7 } } }; // JSON -> Student Student *stu = [Student mj_objectWithKeyValues:dict]; // Printing NSLog(@"ID=%@, desc=%@, oldName=%@, nowName=%@, nameChangedTime=%@", stu.ID, stu.desc, stu.oldName, stu.nowName, stu.nameChangedTime); // ID=20, desc=kids, oldName=kitty, nowName=lufy, nameChangedTime=2013-08 NSLog(@"bagName=%@, bagPrice=%f", stu.bag.name, stu.bag.price); // bagName=a red bag, bagPrice=100.700000

NSArray *dictArray = @[ @{ @"name" : @"Jack", @"icon" : @"lufy.png" }, @{ @"name" : @"Rose", @"icon" : @"nami.png" } ]; // JSON array -> User array NSArray *userArray = [User mj_objectArrayWithKeyValuesArray:dictArray]; // Printing for (User *user in userArray) { NSLog(@"name=%@, icon=%@", user.name, user.icon); } // name=Jack, icon=lufy.png // name=Rose, icon=nami.png

// New model User *user = [[User alloc] init]; user.name = @"Jack"; user.icon = @"lufy.png"; Status *status = [[Status alloc] init]; status.user = user; status.text = @"Nice mood!"; // Status -> JSON NSDictionary *statusDict = status.mj_keyValues; NSLog(@"%@", statusDict); /*  {  text = "Nice mood!";  user = {  icon = "lufy.png";  name = Jack;  };  }  */ // More complex situation Student *stu = [[Student alloc] init]; stu.ID = @"123"; stu.oldName = @"rose"; stu.nowName = @"jack"; stu.desc = @"handsome"; stu.nameChangedTime = @"2018-09-08"; Bag *bag = [[Bag alloc] init]; bag.name = @"a red bag"; bag.price = 205; stu.bag = bag; NSDictionary *stuDict = stu.mj_keyValues; NSLog(@"%@", stuDict); /* {  ID = 123;  bag = {  name = "\U5c0f\U4e66\U5305";  price = 205;  };  desc = handsome;  nameChangedTime = "2018-09-08";  nowName = jack;  oldName = rose; }  */

// New model array User *user1 = [[User alloc] init]; user1.name = @"Jack"; user1.icon = @"lufy.png"; User *user2 = [[User alloc] init]; user2.name = @"Rose"; user2.icon = @"nami.png"; NSArray *userArray = @[user1, user2]; // Model array -> JSON array NSArray *dictArray = [User mj_keyValuesArrayWithObjectArray:userArray]; NSLog(@"%@", dictArray); /*  (  {  icon = "lufy.png";  name = Jack;  },  {  icon = "nami.png";  name = Rose;  }  )  */

NSDictionary *dict = @{ @"name" : @"Jack", @"icon" : @"lufy.png", @"age" : @20, @"height" : @1.55, @"money" : @"100.9", @"sex" : @(SexFemale), @"gay" : @"true" }; // This demo just provide simple steps NSManagedObjectContext *context = nil; User *user = [User mj_objectWithKeyValues:dict context:context]; [context save:nil];

#import "MJExtension.h" @implementation Bag // NSCoding Implementation MJExtensionCodingImplementation @end /***********************************************/ // what properties not to be coded [Bag mj_setupIgnoredCodingPropertyNames:^NSArray *{ return @[@"name"]; }]; // Equals: Bag.m implements +mj_ignoredCodingPropertyNames method. // Create model Bag *bag = [[Bag alloc] init]; bag.name = @"Red bag"; bag.price = 200.8; NSString *file = [NSHomeDirectory() stringByAppendingPathComponent:@"Desktop/bag.data"]; // Encoding [NSKeyedArchiver archiveRootObject:bag toFile:file]; // Decoding Bag *decodedBag = [NSKeyedUnarchiver unarchiveObjectWithFile:file]; NSLog(@"name=%@, price=%f", decodedBag.name, decodedBag.price); // name=(null), price=200.800000

// Dog #import "MJExtension.h" @implementation Dog + (NSString *)mj_replacedKeyFromPropertyName121:(NSString *)propertyName { // nickName -> nick_name return [propertyName mj_underlineFromCamel]; } @end // NSDictionary NSDictionary *dict = @{ @"nick_name" : @"旺财", @"sale_price" : @"10.5", @"run_speed" : @"100.9" }; // NSDictionary -> Dog Dog *dog = [Dog mj_objectWithKeyValues:dict]; // printing NSLog(@"nickName=%@, scalePrice=%f runSpeed=%f", dog.nickName, dog.salePrice, dog.runSpeed);

// Book #import "MJExtension.h" @implementation Book - (id)mj_newValueFromOldValue:(id)oldValue property:(MJProperty *)property { if ([property.name isEqualToString:@"publisher"]) { if (oldValue == nil) return @""; } else if (property.type.typeClass == [NSDate class]) { NSDateFormatter *fmt = [[NSDateFormatter alloc] init]; fmt.dateFormat = @"yyyy-MM-dd"; return [fmt dateFromString:oldValue]; } return oldValue; } @end // NSDictionary NSDictionary *dict = @{ @"name" : @"5分钟突破iOS开发", @"publishedTime" : @"2011-09-10" }; // NSDictionary -> Book Book *book = [Book mj_objectWithKeyValues:dict]; // printing NSLog(@"name=%@, publisher=%@, publishedTime=%@", book.name, book.publisher, book.publishedTime);