群发 图片和语音失败原因是 ，返回 content是 null，

{"id":"165","content":null},{"id":"166","content":null},{"id":"167","content":null},{"id":"168","content":null},{"id":"169","content":{"msg":"个","type":"1","user":{"riches_grade":"2","id":"111","ofusername":"28707130","portrait":"http://api.zhaocailing.com/zcl/php/Public/portrait/s_530ed1efe0528.jpg","title":"1","nick":"轻轻"}}},{"id":"170","content":null}],"hasmore":null,"remainTime":null,"message":"success"}

 

 NSDictionary *dic = @{

                                      @"pic_nail_url":pic_nail_url,

                                      @"pic_url":pic,

                                      @"type":[NSString stringWithFormat:@"%d",kImage],

                                      @"user":[userDic JSONString]

                                      };

 

                NSString *jsonString = [dic JSONString];

原来他妈的是 因为 转 了两遍的 jsonstring，