iOSJsonKit的使用

转自：http://blog.csdn.net/cuiweijie3/article/details/9174739

ios开发中JSONKit的使用

 

 NSLog(@"打印测试");

     NSString *jsonstring =@"[{\"age\":18,\"book\":{\"price\":23.2,\"title\":\"boook111\"},\"name\":\"samyou\"},{\"age\":22,\"book\":{\"price\":33,\"title\":\"booook222\"},\"name\":\"samsam\"}]";

     NSData *data=[jsonstring dataUsingEncoding:NSUTF8StringEncoding];

     NSArray *arr=(NSArray *)[data mutableObjectFromJSONData];

     NSLog(@"count=%d",arr.count);

     for(int i=0;i<arr.count;i++)

     {

         NSDictionary *people=[arr objectAtIndex:i];

         NSString *name=[people objectForKey:@"name"];

         NSString *age=[people objectForKey:@"age"];

         NSLog(@"person withname=%@,age=%d",name,[age intValue]);

         NSDictionary *book=[people objectForKey:@"book"];

         NSString *bookname=[book objectForKey:@"title"];

         NSNumber *price=[book objectForKey:@"price"];

         NSLog(@"book with title=%@,price=%f",bookname,[price doubleValue]);

     }

 

 

 

 //比如 strJson 是网络上接收到的 json 字符串，

 　#import "JSONKit.h"
 NSString *strJson = @"{\"aps\": {\"alert\":{\"body\":\"a msg come!\"},\"bage\":3,\"sound\":\"def.mp3\"}}";
 NSDictionary *result = [jsonData  objectFromJSONData];

 

 NSMutableDictionary *jsonDic = [NSMutableDictionary dictionary];
 NSMutableDictionary *alert = [NSMutableDictionary dictionary];
 NSMutableDictionary *aps = [NSMutableDictionary dictionary];
 [alert setObject:@"a msg come!" forKey:@"body"];
 [aps setObject:alert forKey:@"alert"];
 [aps setObject:@"3" forKey:@"bage" ];
 [aps setObject:@"def.mp3" forKey:@"sound"];
 [jsonDic setObject:aps forKey:@"aps"];
 NSString *strJson = [jsonDic JSONString];

 

 

 

用法：

1.dictionary------>json

NSString *jsonstring = [dictionary JSONString];

 

 

2.json------------>dictionary

NSDictionary *dictionary = [jsonstring objectFromJSONString];