c# - Instagram 到带有 RestSharp 的 TableView

Question

您好，我正在尝试使用 Xamarin.iOS 将我的 Instagram 提要中的个人姓名加载到 UITableView 中。但是它只显示类的名称，您可以在此处看到:

这是我用来尝试提取 Instagram 提要的请求:

var request = new RestRequest {RootElement = "data", Resource = "/users/self/feed"};
            request.AddParameter("access_token", instagramAccessToken);

            var client = new RestClient ("https://api.instagram.com/v1");

                client.ExecuteAsync<List<RootObject>>(request, response => {
                Console.WriteLine(response.Content);
                Console.WriteLine(response.Data);
                InvokeOnMainThread(delegate {
                    // pass the data to the TableSource class
                    ((TableSource<RootObject>)table.Source).Data = response.Data;

                    // make the TableView reload the data
                    table.ReloadData();
                });
            });

这是传入 Instagram Feed 的类文件:

    public class Pagination
    {
        public string next_url { get; set; }
        public string next_max_id { get; set; }
    }

    public class Meta
    {
        public int code { get; set; }
    }

    public class Location
    {
        public double latitude { get; set; }
        public double longitude { get; set; }
        public string name { get; set; }
        public int? id { get; set; }
    }

    public class Comments
    {
        public int count { get; set; }
        public List<object> data { get; set; }
    }

    public class Datum2
    {
        public string username { get; set; }
        public string profile_picture { get; set; }
        public string id { get; set; }
        public string full_name { get; set; }
    }

    public class Likes
    {
        public int count { get; set; }
        public List<Datum2> data { get; set; }
    }

    public class LowResolution
    {
        public string url { get; set; }
        public int width { get; set; }
        public int height { get; set; }
    }

    public class Thumbnail
    {
        public string url { get; set; }
        public int width { get; set; }
        public int height { get; set; }
    }

    public class StandardResolution
    {
        public string url { get; set; }
        public int width { get; set; }
        public int height { get; set; }
    }

    public class Images
    {
        public LowResolution low_resolution { get; set; }
        public Thumbnail thumbnail { get; set; }
        public StandardResolution standard_resolution { get; set; }
    }

    public class From
    {
        public string username { get; set; }
        public string profile_picture { get; set; }
        public string id { get; set; }
        public string full_name { get; set; }
    }

    public class Caption
    {
        public string created_time { get; set; }
        public string text { get; set; }
        public From from { get; set; }
        public string id { get; set; }
    }

    public class User
    {
        public string username { get; set; }
        public string website { get; set; }
        public string profile_picture { get; set; }
        public string full_name { get; set; }
        public string bio { get; set; }
        public string id { get; set; }

        public override string ToString ()
        {
            return string.Format ("[User: username={0}, website={1}, profile_picture={2}, full_name={3}, bio={4}, id={5}]", username, website, profile_picture, full_name, bio, id);
        }
    }

    public class LowResolution2
    {
        public string url { get; set; }
        public int width { get; set; }
        public int height { get; set; }
    }

    public class StandardResolution2
    {
        public string url { get; set; }
        public int width { get; set; }
        public int height { get; set; }
    }

    public class Videos
    {
        public LowResolution2 low_resolution { get; set; }
        public StandardResolution2 standard_resolution { get; set; }
    }

    public class Datum
    {
        public object attribution { get; set; }
        public List<object> tags { get; set; }
        public string type { get; set; }
        public Location location { get; set; }
        public Comments comments { get; set; }
        public string filter { get; set; }
        public string created_time { get; set; }
        public string link { get; set; }
        public Likes likes { get; set; }
        public Images images { get; set; }
        public List<object> users_in_photo { get; set; }
        public Caption caption { get; set; }
        public bool user_has_liked { get; set; }
        public string id { get; set; }
        public User user { get; set; }
        public Videos videos { get; set; }
    }

    public class RootObject
    {
        public Pagination pagination { get; set; }
        public Meta meta { get; set; }
        public List<Datum> data { get; set; }
    }

这里是TableSource类下的getCell方法:

    public class TableSource<RootObject> : UITableViewSource 
{
    public List<RootObject> Data { get; set; }
    protected string cellIdentifier = "TableCell";

    public TableSource ()
    {
        Data = new List<RootObject> ();
    }

    public TableSource(List<RootObject> data)
    {
        Data = data;
    }

    public override int RowsInSection (UITableView tableview, int section)
    {
        if (Data == null) {
            return 0;
        } else {
            return Data.Count;
        }
    }

    public override UITableViewCell GetCell (UITableView tableView, MonoTouch.Foundation.NSIndexPath indexPath)
    {
        // request a recycled cell to save memory
        UITableViewCell cell = tableView.DequeueReusableCell (cellIdentifier);
        // if there are no cells to reuse, create a new one
        if (cell == null)
            cell = new UITableViewCell (UITableViewCellStyle.Default, cellIdentifier);

        cell.TextLabel.Text = Data[indexPath.Row].data[0].user.username;

        return cell;
    }
}

Answer 1

您正在传递 List<RootObject>到您的表源。每个 RootObject 都有一个数据属性，即 List<Datum> ;每个 Datum 都有一个 User 属性，每个 User 都有一个 username 属性。

所以你想做这样的事情(我是任意抓取第一个 Datum，这可能不正确)

cell.TextLabel.Text = Data[indexPath.Row].data[0].user.username;