ios nsdictionary 创建 json

Question

你好，我正在尝试使用 nsdictionary 创建 json 字符串到目前为止我还不能制作这个 json

{"user":{"username":"test","email":"test@gmail.com", "password":"123456789","password_confirmation":"123456789"}

这是我的代码:

            NSDictionary *jsonUserDictinary = [NSDictionary dictionaryWithObjectsAndKeys:
                                           [usernameText text], @"username",
                                           [passwordText text], @"password" ,
                                           [emailText text], @"email",
                                           [confirmText text], @"password_confirmation",
                                           nil];


        NSDictionary *jsonSignUpDictionary = [NSDictionary dictionaryWithObjectsAndKeys:jsonUserDictinary, @"user",nil];

        NSData *jsonSignUpData = [NSJSONSerialization dataWithJSONObject:jsonSignUpDictionary options:NSJSONWritingPrettyPrinted error: nil];
        NSString *jsonSignUp = [[NSString alloc] initWithData:jsonSignUpData encoding:NSUTF8StringEncoding];
        NSLog(@"json data string:\n%@", jsonSignUp);

现在我想创建这个 json:

{"user":{"username":"test","email":"test@gmail.com", "password":"123456789","password_confirmation":"123456789"},"device":{"token":"654C4DB3-3F68-4969-8ED2-80EA16B46EB0"}}

但我找不到添加“设备”对象的方法

Answer 1

NSDictionary *jsonUserDictinary = [NSDictionary dictionaryWithObjectsAndKeys:
                                   [usernameText text], @"username",
                                   [passwordText text], @"password" ,
                                   [emailText text], @"email",
                                   [confirmText text], @"password_confirmation",
                                   nil];

NSDictionary *deviceDic = @{@"token": @"your token"};
NSDictionary *jsonSignUpDictionary = @{@"user":jsonSignUpDictionary, @"device":deviceDic};