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| using System;
using System.Collections.Generic;
using System.Text;
using System.Query;
using System.Xml.XLinq;
using System.Data.DLinq;
namespace ImageTest
{
public class RSSImageFeed
{
private const string FLICKR_API_KEY = "c705bfbf75e8d40f584c8a946cf0834c";
private const string MOST_RECENT = "http://www.flickr.com/services/rest/?method=flickr.photos.getRecent&api_key=" + FLICKR_API_KEY;
private const string INTERESTING = "http://www.flickr.com/services/rest/?method=flickr.interestingness.getList&api_key=" + FLICKR_API_KEY;
private const string ENTER_TAG = "http://www.flickr.com/services/rest/?method=flickr.photos.search&api_key=" + FLICKR_API_KEY + "&tags=";
private string url = MOST_RECENT;
private int pageIndex = 0;
private int columns = 5;
private int rows = 2;
private bool prevAvail = false;
private bool nextAvail = false;
public RSSImageFeed()
{
}
public bool IsPrevAvail
{
get { return prevAvail; }
}
public bool IsNextAvail
{
get { return nextAvail; }
}
public int PageIndex
{
set { pageIndex = value; }
get { return pageIndex; }
}
public bool LoadPictures(string searchType, string searchWord)
{
switch (searchType)
{
case "Most Recent":
this.url=MOST_RECENT;
break;
case "Interesting":
this.url=INTERESTING;
break;
case "By Search Word":
this.url = ENTER_TAG + searchWord;
break;
default :
this.url = MOST_RECENT;
break;
}
try
{
var xraw = XElement.Load(url);
var xroot = XElement.Parse(xraw.Xml);
//select the RSS data from Flickr, and use standard LINQ projection
//to store it within a new PhotoInfo which is an object of my own making
var photos = (from photo in xroot.Element("photos").Elements("photo")
select new PhotoInfo
{
Id = (string)photo.Attribute("id"),
Owner = (string)photo.Attribute("owner"),
Title = (string)photo.Attribute("title"),
Secret = (string)photo.Attribute("secret"),
Server = (string)photo.Attribute("server"),
Farm = (string)photo.Attribute("Farm"),
}).Skip(pageIndex * columns * rows).Take(columns * rows);
//set the allowable next/prev states
int count = photos.Count();
if (pageIndex == 0)
{
this.prevAvail = false;
this.nextAvail = true;
}
else
{
this.prevAvail = true;
}
//see if there are less photos than sum(Columns * Rows) if there are less
//cant allow next operation
if (count < columns * rows)
{
this.nextAvail = false;
}
//then write results out to a file, which can then be used by XPF Application
XDocument photosDoc = new XDocument();
XElement photosElement = new XElement("photos", from pi in photos
select new XElement("photo",
new XElement("url", pi.PhotoUrl(false)),
new XElement("title", pi.Title))
);
photosDoc.Add(photosElement);
photosDoc.Save(@"c:\photos.xml");
return true;
}
catch (Exception ex)
{
return false;
}
}
}
} |
Appel de code C# à partir de Java
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Envoyé par nounouuuuu201186
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