网络请求时WiFi边上的菊花

- (void)Refresh{

    // wifi 边上的菊花

    UIApplication *application = [UIApplication sharedApplication];

    // 数据请求开始 开始转

    application.networkActivityIndicatorVisible = YES;

    AFNetworkReachabilityManager *reach = [AFNetworkReachabilityManager sharedManager];

    AFHTTPRequestOperationManager *request = [AFHTTPRequestOperationManager manager];

    request.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/json",@"application/json",@"text/javascript",@"text/html", nil];

    NSString *url = [NSString stringWithFormat:@"http://mrobot.pconline.com.cn/v2/cms/channels/1?pageSize=20&pageNo=1"];

    

    [request GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSDictionary *dataDic = responseObject;

        for (NSDictionary *dic in [dataDic objectForKey:@"articleList"]) {

            TTModel *model = [[TTModel alloc] init];

            [model setValuesForKeysWithDictionary:dic];

            [self.arr addObject:model];

        }

        [reach stopMonitoring];

        [_tableView reloadData];

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        NSLog(@"数据请求失败");

    }];

    [self.tableView.footer endRefreshing];

    // 刷新结束 停止

    application.networkActivityIndicatorVisible = NO;

    _index++;

}