zoukankan      html  css  js  c++  java
  • Convert an object into Json using SBJson or other JSON library

    Using SBJson, to convert a object to JSON string, you have to override the proxyForJson method. Like the following,

    The .h file,

    @interface MyCustomObject : NSObject {
       
    NSString *receiverFirstName;
       
    NSString *receiverMiddleInitial;
       
    NSString *receiverLastName;
       
    NSString *receiverLastName2;
    }
    @property (nonatomic, retain) NSString *receiverFirstName;
    @property (nonatomic, retain) NSString *receiverMiddleInitial;
    @property (nonatomic, retain) NSString *receiverLastName;
    @property (nonatomic, retain) NSString *receiverLastName2;

    - (id) proxyForJson;
    - (int) parseResponse :(NSDictionary *) receivedObjects;
    }

    In the implementation file,

        - (id) proxyForJson {

           
    return [NSDictionary dictionaryWithObjectsAndKeys:
                receiverFirstName
    , @"ReceiverFirstName",
                receiverMiddleInitial
    , @"ReceiverMiddleInitial",
                receiverLastName
    , @"ReceiverLastName",
                receiverLastName2
    , @"ReceiverLastName2",
                nil
    ];
       
    }

    And to get the object from the JSON string you have to write a parseResponse method like this,

    - (int) parseResponse :(NSDictionary *) receivedObjects {
        self
    .receiverFirstName = (NSString *) [receivedObjects objectForKey:@"ReceiverFirstName"];
        self
    .receiverLastName = (NSString *) [receivedObjects objectForKey:@"ReceiverLastName"];

       
    /* middleInitial and lastname2 are not required field. So server may return null value which
         eventually JSON parser return NSNull. Which is unrecognizable by most of the UI and functions.
         So, convert it to empty string. */

       
    NSString *middleName = (NSString *) [receivedObjects objectForKey:@"ReceiverMiddleInitial"];
       
    if ((NSNull *) middleName == [NSNull null]) {
            self
    .receiverMiddleInitial = @"";
       
    } else {
            self
    .receiverMiddleInitial = middleName;
       
    }

       
    NSString *lastName2 = (NSString *) [receivedObjects objectForKey:@"ReceiverLastName2"];
       
    if ((NSNull *) lastName2 == [NSNull null]) {
            self
    .receiverLastName2 = @"";
       
    } else {
            self
    .receiverLastName2 = lastName2;
       
    }

       
    return 0;
    }
  • 相关阅读:
    ubuntu下eclipse打开win下的代码中文出现乱码
    ubuntu设置ip和dns
    堆和栈的区别
    分析与利用
    C语言ASM汇编内嵌语法
    vnc无法显示桌面
    草稿本(1)总结
    系统虚拟化:原理与实现
    错误
    ab(http)与abs(https)压测工具
  • 原文地址:https://www.cnblogs.com/neozhu/p/2431890.html
Copyright © 2011-2022 走看看