public DetailViewController(RSSFeedItem item)
: base(UITableViewStyle.Grouped, null, true)
{
var attributes = new NSAttributedStringDocumentAttributes();
attributes.DocumentType = NSDocumentType.HTML;
attributes.StringEncoding = NSStringEncoding.UTF8;
var error = new NSError();
var htmlString = new NSAttributedString(item.Description, attributes, ref error);
Root = new RootElement(item.Title) {
new Section{
new StringElement(item.Author),
new StringElement(item.PublishDate),
new StyledMultilineElement(htmlString),
new HtmlElement("Full Article", item.Link)
}
};
NavigationItem.RightBarButtonItem = new UIBarButtonItem(UIBarButtonSystemItem.Action, async delegate
{
var message = item.Title + " " + item.Link + " #PlanetXamarin";
var social = new UIActivityViewController(new NSObject[] { new NSString(message)},
new UIActivity[] { new UIActivity() });
PresentViewController(social, true, null);
});
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
var idString = string.Empty;
//parse out id and get feed item from cache
if (NavigationContext.QueryString.TryGetValue("id", out idString))
{
var id = 0;
int.TryParse(idString, out id);
item = MasterPage.ViewModel.GetFeedItem(id);
DataContext = item;
var fullHtml = WebBrowserHelper.WrapHtml(item.Description, Browser.ActualWidth);
Browser.NavigateToString(fullHtml);
}
}
public DetailViewController(RSSFeedItem item)
: base(UITableViewStyle.Grouped, null, true)
{
var attributes = new NSAttributedStringDocumentAttributes();
attributes.DocumentType = NSDocumentType.HTML;
attributes.StringEncoding = NSStringEncoding.UTF8;
var error = new NSError();
var htmlString = new NSAttributedString(item.Description, attributes, ref error);
Root = new RootElement(item.Title) {
new Section{
new StringElement(item.Author),
new StringElement(item.PublishDate),
new StyledMultilineElement(htmlString),
new HtmlElement("Full Article", item.Link)
}
};
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Detail);
webView = FindViewById<WebView>(Resource.Id.webview);
var id = Intent.GetIntExtra("id", 0);
feedItem = MasterActivity.ViewModel.GetFeedItem(id);
webView.LoadData(feedItem.Description, "text/html", "charset=UTF-8");
webView.Settings.JavaScriptEnabled = true;
ActionBar.Title = feedItem.Title;
readFullButton = FindViewById<Button>(Resource.Id.button_read_full);
readFullButton.Click += (sender, args) =>
{
webView.LoadUrl(feedItem.Link);
readFullButton.Visibility = ViewStates.Gone;
};
}
void BeginDownloadingImage (RSSFeedItem app, NSIndexPath path)
{
// Queue the image to be downloaded. This task will execute
// as soon as the existing ones have finished.
byte[] data = null;
DownloadTask = DownloadTask.ContinueWith (prevTask => {
try {
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = true;
using (var c = new GzipWebClient ())
data = c.DownloadData (app.Image);
} finally {
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = false;
}
});
// When the download task is finished, queue another task to update the UI.
// Note that this task will run only if the download is successful and it
// uses the CurrentSyncronisationContext, which on MonoTouch causes the task
// to be run on the main UI thread. This allows us to safely access the UI.
DownloadTask = DownloadTask.ContinueWith (t => {
// Load the image from the byte array.
app.TheImage = UIImage.LoadFromData (NSData.FromArray (data));
// Retrieve the cell which corresponds to the current App. If the cell is null, it means the user
// has already scrolled that app off-screen.
var cell = TableView.VisibleCells.Where (c => c.Tag == viewModel.FeedItems.IndexOf (app)).FirstOrDefault ();
if (cell != null)
cell.ImageView.Image = app.TheImage;
}, CancellationToken.None, TaskContinuationOptions.OnlyOnRanToCompletion, TaskScheduler.FromCurrentSynchronizationContext ());
}
