public static async Task StartDownloadAsync(int position, String url, ListView listView)
{
if (ViewsDownloadInProgressByAudioId.ContainsKey (url))
{
return;
}
// Locate the the child view and update.
var firstPostion = listView.FirstVisiblePosition - listView.HeaderViewsCount;
var childIndex = position - firstPostion;
if (0 <= childIndex && childIndex < listView.ChildCount)
{
var view = listView.GetChildAt (childIndex);
var progressBar = view.FindViewById<ProgressBar> (Resource.Id.DownloadProgress);
ViewsDownloadInProgressByAudioId.Add (url, view);
var downloader = new AndroidAudioDownloader ();
await downloader.CreateDownloadTask (url, progressBar).ContinueWith (task =>
{
if (!task.IsFaulted)
{
ViewsDownloadInProgressByAudioId.Remove(url);
Log.Debug (DEBUG_TAG, "Downloaded {0} bytes.", task.Result);
}
}
);
}
}
async void OnAlbumItemClicked(object sender, AdapterView.ItemClickEventArgs e)
{
var selectedEpisode = _album.Episodes [e.Position];
if (AndroidAudioDownloader.ViewsDownloadInProgressByAudioId.ContainsKey(selectedEpisode.RemoteUrl))
{
return;
}
if (AudioDownloader.HasLocalFile(selectedEpisode.RemoteUrl, selectedEpisode.FileSize))
{
var resultIntent = new Intent();
ExtraUtils.PutEpisode(resultIntent, selectedEpisode.Id);
ExtraUtils.PutAlbum(resultIntent, _album.Id);
ExtraUtils.PutSelectedTab(resultIntent, (int)MainActivity.TabTitle.Player);
SetResult(Result.Ok, resultIntent);
StartService(PlayerService.CreateIntent(
this,
PlayerService.ACTION_PLAY,
_album.Id,
selectedEpisode.Id
));
Finish();
}
else
{
await AndroidAudioDownloader.StartDownloadAsync(e.Position, selectedEpisode.RemoteUrl, ListView);
}
}