NSDictionary

Question

我正在尝试解析从 Web 服务返回的 JSON。响应 JSON 看起来像这样 {"API_Count":"17"}

这是我的代码。只是想获取值 (17)。关键值。这是我的代码.. 'basic' 一定是错误的。我收到错误

**[NSTaggedPointerString objectForKey:]: unrecognized selector sent to instance**


***Any ideas??***


NSData *jsonData = [responseObject dataUsingEncoding:NSUTF8StringEncoding];
NSError *err = nil;

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&err];

for (NSDictionary *item  in json )
{
    NSObject *val = [item objectForKey:@"API_Count"];

    // ERROR !!! [NSTaggedPointerString objectForKey:]: unrecognized selector sent to instance 0xa32b4de1b0d02c49


}

Answer 1

NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments 错误：&err];

NSInteger val = [[json objectForKey:@"API_Count"] intergerValue];

NSDictionary - 发送到实例的无法识别的选择器 - 错误

NSDictionary - unrecognized selector sent to instance - Error