IOS SBJson解析

代码如下

• (void)openIdRequest:(ASIHTTPRequest *)request
  {

   NSString *str = [[request.responseString componentsSeparatedByString:@"callback"] objectAtIndex:1]; 
    
   NSLog(@"==========>>>%@",str); 
    
   SBJSON *json = [[SBJSON alloc]init]; 
    
   NSError *error = nil; 
    
   NSArray *arry = [json objectWithString:str allowScalar:YES error:&error]; 
    
   NSLog(@"------>>>%@",arry); 
  

}

输出：

2013-11-16 21:38:17.161 TestSinna[2935:c07] ==========>>>( {"client_id":"1101107098","openid":"79CA2E49845A8CEA5B901ABFB477DAE3"} );
2013-11-16 21:38:17.161 TestSinna[2935:c07] ------>>>(null)

问题，如何才能使数据装入数组中？？？？？？