private async void print()
{
//var success = await Windows.System.Launcher.LaunchUriAsync(uri);
try
{
LoaderText.Text = "Generando documento PDF...";
grdLoader.Visibility = Visibility.Visible;
JsonObject result = await Finances.printCC(UserId);
Uri uri = new Uri(result.GetNamedString("url"));
string filename = result.GetNamedString("file_name");
StorageFile destinationFile = await DownloadsFolder.CreateFileAsync(filename, CreationCollisionOption.GenerateUniqueName);
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(uri, destinationFile);
await HandleDownloadAsync(download, true);
await Windows.System.Launcher.LaunchFileAsync(download.ResultFile);
grdLoader.Visibility = Visibility.Collapsed;
LoaderText.Text = "";
}
catch (Exception ex)
{
var dialog = new MessageDialog(ex.Message);
await dialog.ShowAsync();
}
}
public void CancelDownload(DownloadOperation operation)
{
Profiler.BeginSample(string.Format("CancelDownload {0}", operation.ID));
AndroidBridge.CallStatic("cancelDownload", Context, operation.ID);
Profiler.EndSample();
}
private void DownloadOperationProgress(DownloadOperation download)
{
// Note that this event handler is invoked on a background thread
if (this.DownloadProgress != null)
{
this.DownloadProgress(download);
}
}
internal Task RestoreDownload(DownloadOperation operation)
{
VideoDownloadManager.DownloadStarted += VideoDownloadManager_DownloadStarted;
IsCacheRequested = true;
CacheState = NicoVideoCacheState.Downloading;
return(GetCacheFile());
}
private async void ConnectUsingBackgroundTransfer(string resourceIdentity, Uri resourceUri)
{
ThreadNetworkContext context = null;
try
{
// For demonstrational purposes, when "Use personal context" is selected,
// the resourceIdentity is set to null to force personal context.
// When using Windows.Networking.BackgroundTransfer, the app is responsible for disallowing connections
// to enterprise owned URLs when in personal context.
// Otherwise, the app may inadvertently access cached data for a different context.
if (UsePersonalContext.IsChecked.Value && !string.IsNullOrEmpty(resourceIdentity))
{
rootPage.NotifyUser("This app does not have access to the specified URL in personal context", NotifyType.ErrorMessage);
return;
}
rootPage.NotifyUser("Creating file.........", NotifyType.StatusMessage);
StorageFile resultFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(
"ResultFile.txt",
CreationCollisionOption.GenerateUniqueName);
if (!string.IsNullOrEmpty(resourceIdentity))
{
context = ProtectionPolicyManager.CreateCurrentThreadNetworkContext(resourceIdentity);
}
rootPage.NotifyUser("Accessing network resource.........", NotifyType.StatusMessage);
BackgroundDownloader downloader = new BackgroundDownloader();
if (!string.IsNullOrEmpty(UserNameBox.Text) &&
!string.IsNullOrEmpty(Passwordbox.Password))
{
downloader.ServerCredential = new PasswordCredential(
resourceUri.AbsoluteUri,
UserNameBox.Text,
Passwordbox.Password);
}
DownloadOperation download = downloader.CreateDownload(resourceUri, resultFile);
await HandleDownloadAsync(download);
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.ToString(), NotifyType.ErrorMessage);
}
finally
{
if (context != null)
{
context.Dispose();
}
}
}
public async void Download(string uri, string filename)
{
Uri source;
if (!Uri.TryCreate(uri, UriKind.Absolute, out source))
{
return;
}
string destination = filename.Trim();
if (string.IsNullOrWhiteSpace(destination))
{
return;
}
StorageFile destinationFile;
try
{
destinationFile = await KnownFolders.PicturesLibrary.CreateFileAsync(
destination, CreationCollisionOption.GenerateUniqueName);
}
catch (FileNotFoundException ex)
{
return;
}
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(source, destinationFile);
download.Priority = BackgroundTransferPriority.Default;
List <DownloadOperation> requestOperations = new List <DownloadOperation>();
requestOperations.Add(download);
// If the app isn't actively being used, at some point the system may slow down or pause long running
// downloads. The purpose of this behavior is to increase the device's battery life.
// By requesting unconstrained downloads, the app can request the system to not suspend any of the
// downloads in the list for power saving reasons.
// Use this API with caution since it not only may reduce battery life, but it may show a prompt to
// the user.
UnconstrainedTransferRequestResult result;
try
{
result = await BackgroundDownloader.RequestUnconstrainedDownloadsAsync(requestOperations);
}
catch (NotImplementedException)
{
return;
}
await HandleDownloadAsync(download, true);
}
public void AddDownloadOperation(DownloadOperation downloadOperation)
{
var entry = new BucketEntryViewModel(this, _bucketService, _objectService);
entry.IsDownloadOperation = true;
entry.DownloadOperation = downloadOperation;
entry.InitDownloadOperation();
Entries.Add(entry);
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
Frame.BackStack.Clear();
base.OnNavigatedTo(e);
GC.Collect();
GC.WaitForPendingFinalizers();
download = (DownloadOperation)e.Parameter;
nameTextBlock.Text = download.ResultFile.Name;
}
private void progressChanged(DownloadOperation downloadOperation)
{
int progress = (int)(100 * ((double)downloadOperation.Progress.BytesReceived / (double)downloadOperation.Progress.TotalBytesToReceive));
if (progress >= 100)
{
downloadOperation = null;
}
}
private static async void CreateDown(DownloadTaskModel m, int index, string url, StorageFolder folder)
{
BackgroundDownloader downloader = new BackgroundDownloader();
downloader.SetRequestHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36");
if (!url.Contains("360.cn"))
{
downloader.SetRequestHeader("Referer", "https://www.bilibili.com/blackboard/html5player.html?crossDomain=true");
}
//设置下载模式
if (SettingHelper.Get_DownMode() == 0)
{
group.TransferBehavior = BackgroundTransferBehavior.Serialized;
}
else
{
group.TransferBehavior = BackgroundTransferBehavior.Parallel;
}
downloader.TransferGroup = group;
//创建视频文件
var filetype = ".flv";
if (url.Contains(".mp4"))
{
filetype = ".mp4";
}
StorageFile file = await folder.CreateFileAsync(index.ToString("000") + filetype, CreationCollisionOption.OpenIfExists);
DownloadOperation downloadOp = downloader.CreateDownload(new Uri(url), file);
//设置下载策略
if (SettingHelper.Get_Use4GDown())
{
downloadOp.CostPolicy = BackgroundTransferCostPolicy.Always;
}
else
{
downloadOp.CostPolicy = BackgroundTransferCostPolicy.UnrestrictedOnly;
}
SqlHelper.InsertDownload(new DownloadGuidClass()
{
guid = downloadOp.Guid.ToString(),
cid = m.cid,
index = index,
aid = (m.downloadMode == DownloadMode.Anime) ? m.sid : m.avid,
eptitle = m.epTitle,
title = m.title,
mode = (m.downloadMode == DownloadMode.Anime) ? "anime" : "video"
});
try
{
await downloadOp.StartAsync();
}
catch (Exception)
{
}
}
public async Task GetPDF(int id, StorageFile file)
{
Uri source = new Uri($"{apiUrl}/Business/PdfForPromotion/{id}");
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(source, file);
download.StartAsync();
}
private void OnDownloadProgressChanged(DownloadOperation download)
{
Dispatcher.DispatchAsync(() =>
{
var index = OperationsList.IndexOf(download);
OperationsList[index] = download;
RaisePropertyChanged("Progress");
});
}
private async Task SaveImageSite(StorageFile savefile)
{
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(new Uri(image_url), savefile);
await download.StartAsync();
downloader = null;
download = null;
}
public NicoVideoCacheProgress(NicoVideoCacheRequest req, DownloadOperation op, IVideoStreamingDownloadSession session)
{
RawVideoId = req.RawVideoId;
Quality = session.Quality;
IsRequireForceUpdate = req.IsRequireForceUpdate;
RequestAt = req.RequestAt;
DownloadOperation = op;
Session = session;
}
private async void progressChanged(DownloadOperation downloadOperation)
{
//Statustext.Visibility = Visibility.Visible;
//Statusring.IsActive = false;
int progress = (int)(100 * ((double)downloadOperation.Progress.BytesReceived / (double)downloadOperation.Progress.TotalBytesToReceive));
//Statustext.Text = String.Format("{0} of {1} kb. downloaded - %{2} complete.", downloadOperation.Progress.BytesReceived / 1024, downloadOperation.Progress.TotalBytesToReceive / 1024, progress);
//Statustext.Value = progress;
switch (downloadOperation.Progress.Status)
{
case BackgroundTransferStatus.Running:
{
break;
}
case BackgroundTransferStatus.PausedByApplication:
{
break;
}
case BackgroundTransferStatus.PausedCostedNetwork:
{
break;
}
case BackgroundTransferStatus.PausedNoNetwork:
{
break;
}
case BackgroundTransferStatus.Completed:
{
MessageDialog msg = new MessageDialog("Download Completed");
msg.ShowAsync();
break;
}
case BackgroundTransferStatus.Error:
{
//Statustext.Text = "An error occured while downloading.";
MessageDialog msg = new MessageDialog("No internet connection has been found.");
msg.ShowAsync();
break;
}
}
if (progress >= 100)
{
downloadOperation = null;
downloadingText.Text = "Đã tải";
downloadingBar.Visibility = Visibility.Collapsed;
await Task.Delay(1500);
statusDownv2.Visibility = Visibility.Collapsed;
//Statustext.Visibility = Visibility.Collapsed;
}
}
private void Progress_ProgressChanged(object sender, DownloadOperation e)
{
DownloadProgress.Value = (e.Progress.BytesReceived / (double)e.Progress.TotalBytesToReceive) * 1000;
if (e.Progress.BytesReceived == e.Progress.TotalBytesToReceive && e.Progress.TotalBytesToReceive != 0)
{
DownloadProgress.Visibility = Visibility.Collapsed;
}
}
public UniversalTransferRequest(DownloadOperation request, Progress <DownloadOperation> callback)
{
this.request = request;
this.callback = callback;
if (this.callback != null)
{
this.callback.ProgressChanged += Request_ProgressChanged;
}
}
void UpdateDownloadProgress(DownloadOperation download)
{
if (download.Progress.TotalBytesToReceive == 0)
{
DownloadProgress = 0;
return;
}
DownloadProgress = (int)((download.Progress.BytesReceived * 100) / download.Progress.TotalBytesToReceive);
}
/// <summary>
/// Hanbdles a single BackgroundDownload for a song.
/// </summary>
private async void HandleDownload(Track track, DownloadOperation download, bool start)
{
track.BackgroundDownload = new BackgroundDownload(download);
ActiveDownloads.Add(track);
Debug.WriteLine("Added {0} to active downloads", track);
try
{
var progressCallback = new Progress <DownloadOperation>(DownloadProgress);
if (start)
{
// Start the BackgroundDownload and attach a progress handler.
await
download.StartAsync()
.AsTask(track.BackgroundDownload.CancellationTokenSrc.Token, progressCallback);
}
else
{
// The BackgroundDownload was already running when the application started, re-attach the progress handler.
await
download.AttachAsync()
.AsTask(track.BackgroundDownload.CancellationTokenSrc.Token, progressCallback);
}
//Download Completed
var response = download.GetResponseInformation();
//Make sure it is success
if (response.StatusCode < 400)
{
await DownloadFinishedForAsync(track);
}
else
{
Debug.WriteLine("Download status code for {0} is bad :/", track);
track.Status = TrackStatus.None;
await _libraryService.UpdateTrackAsync(track);
await((DownloadOperation)track.BackgroundDownload.DownloadOperation).ResultFile.DeleteAsync();
}
}
catch
{
Debug.WriteLine("Download cancelled {0}", track);
track.AudioLocalUri = null;
track.Status = TrackStatus.None;
await _libraryService.UpdateTrackAsync(track);
await((DownloadOperation)track.BackgroundDownload.DownloadOperation).ResultFile.DeleteAsync();
}
finally
{
ActiveDownloads.Remove(track);
}
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
try
{
if (e.Parameter != null)
{
Dictionary <string, string> parameter = new Dictionary <string, string>();
parameter = e.Parameter as Dictionary <string, string>;
if (parameter["bookUrl"] != null)
{
string bookUrl = parameter["bookUrl"];
pageTitle.Text = parameter["title"];
Uri fileTarget = new Uri(bookUrl.Trim());
StorageFile file = await KnownFolders.DocumentsLibrary.CreateFileAsync(pageTitle.Text.Trim() + ".pdf", CreationCollisionOption.GenerateUniqueName);
CancellationTokenSource cancellationToken = new CancellationTokenSource();
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(fileTarget, file);
Progress <DownloadOperation> progress = new Progress <DownloadOperation>(progressChanged);
progressStatus.Text = "Initializing ....";
await download.StartAsync().AsTask(cancellationToken.Token, progress);
if (download.Progress.BytesReceived >= download.Progress.TotalBytesToReceive)
{
StorageFile bookPdf = await KnownFolders.DocumentsLibrary.GetFileAsync(pageTitle.Text.Trim() + ".pdf");
LoadPdfFileAsync(file);
HideProgressRing();
}
else
{
ShowProgressRing();
}
}
}
base.OnNavigatedTo(e);
}
catch (TaskCanceledException ex)
{
var popup = new Windows.UI.Popups.MessageDialog("Cant load the file. The program might have failed to open the file or you are not connected");
progressStatus.Text = "Download canceled.";
popup.Commands.Add(new Windows.UI.Popups.UICommand("Ok"));
popup.DefaultCommandIndex = 0;
popup.CancelCommandIndex = 1;
var results = await popup.ShowAsync();
if (results.Label == "Ok")
{
this.Frame.GoBack();
}
}
}
public async static Task <string> CoverAudio(IAudioFile audio)
{
if (audio.PlaylistId != 0)
{
var cover = await CoverPlaylistById(audio.PlaylistId, audio.Cover);
return(cover);
}
else
{
var uriImage = audio.Cover;
StorageFile coverFile = null;
var a = await StaticContent.CoversFolder.TryGetItemAsync($"VK{audio.Id}Audio.jpg");
if (a != null)
{
try
{
coverFile = await StaticContent.CoversFolder.GetFileAsync($"VK{audio.Id}Audio.jpg");
}
catch
{
if (config.SaveImage)
{
var task = Task.Run(async() =>
{
coverFile = await StaticContent.CoversFolder.CreateFileAsync($"VK{audio.Id}Audio.jpg");
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(new Uri(uriImage), coverFile);
await download.StartAsync();
});
}
return(uriImage);
}
}
else
{
if (config.SaveImage)
{
var task = Task.Run(async() =>
{
coverFile = await StaticContent.CoversFolder.CreateFileAsync($"VK{audio.Id}Audio.jpg");
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download = downloader.CreateDownload(new Uri(uriImage), coverFile);
await download.StartAsync();
});
}
return(uriImage);
}
return(coverFile.Path);
}
}
public void ProgressCallBack(DownloadOperation obj)
{
this.Visibility = Visibility.Visible;
var Percentage = ((double)obj.Progress.BytesReceived / obj.Progress.TotalBytesToReceive) * 100;
if (Percentage >= 100)
{
Saved.Visibility = Visibility.Visible;
}
}
private static void DownloadOperation_DownloadOperationProgressChanged(DownloadOperation downloadOperation)
{
Console.WriteLine($"{downloadOperation.ObjectName} {downloadOperation.PercentageCompleted}%");
if (!string.IsNullOrEmpty(downloadOperation.ErrorMessage))
{
Console.WriteLine(downloadOperation.ErrorMessage);
}
File.WriteAllBytes(downloadOperation.ObjectName, downloadOperation.DownloadedBytes);
}
private static void ProgressCallback(DownloadOperation obj)
{
double progress = ((double)obj.Progress.BytesReceived / obj.Progress.TotalBytesToReceive);
//Debug.WriteLine("Progress: " + progress * 100);
if (progress >= 1.0)
{
//Debug.WriteLine("Download complete!");
}
}
async public void Backgrounddownload(Imagemodel imagemodel)
{
StorageFolder folder = await KnownFolders.PicturesLibrary.CreateFolderAsync("ONE", CreationCollisionOption.OpenIfExists);
StorageFile newFile = await folder.CreateFileAsync(imagemodel.Title + ".jpg", CreationCollisionOption.OpenIfExists);
Uri uri = new Uri(imagemodel.CoverImage);
DownloadOperation download = backgroundDownload.CreateDownload(uri, newFile);
await download.StartAsync();
}
public static async Task <DownloadItem> Create(DownloadOperation op)
{
DownloadItem item = new DownloadItem();
item.Downloader = new BackgroundDownloader();
item.Url = op.RequestedUri.OriginalString;
await item.Construct(op);
return(item);
}
/// <summary>
/// Приостанавливает выполнение запроса
/// </summary>
public void Pause()
{
if (State != RequestState.Processing)
{
return;
}
DownloadOperation.Pause();
State = RequestState.Paused;
}
/// <summary>
/// Возобновляет выполнение приостановленного запроса
/// </summary>
public void Resume()
{
if (State != RequestState.Paused)
{
return;
}
DownloadOperation.Resume();
State = RequestState.Processing;
}
private static void DownloadProgress(DownloadOperation obj)
{
Debug.WriteLine(obj.Progress.ToString());
var progress = (double)obj.Progress.BytesReceived / (double)obj.Progress.TotalBytesToReceive;
string tag = GetFileNameFromUri(obj.RequestedUri);
UpdateToast(obj.ResultFile.Name, progress);
}
public DownloadFileImplementation(DownloadOperation downloadOperation)
{
DownloadOperation = downloadOperation;
var progress = new Progress <DownloadOperation>(ProgressChanged);
_cancellationToken = new CancellationTokenSource();
DownloadOperation.AttachAsync().AsTask(_cancellationToken.Token, progress);
}
/// <summary>
/// Overrides the base execute logic to use the background downloader to download the file.
/// </summary>
protected async override void OnExecute()
{
var loginResult = await this.LiveClient.Session.AuthClient.GetLoginStatusAsync();
if (loginResult.Error != null)
{
this.taskCompletionSource.SetException(loginResult.Error);
return;
}
else
{
var downloader = new BackgroundDownloader();
downloader.SetRequestHeader(
ApiOperation.AuthorizationHeader,
AuthConstants.BearerTokenType + " " + loginResult.Session.AccessToken);
downloader.SetRequestHeader(ApiOperation.LibraryHeader, Platform.GetLibraryHeaderValue());
downloader.Group = LiveConnectClient.LiveSDKDownloadGroup;
this.downloadOp = downloader.CreateDownload(this.Url, this.OutputFile);
this.taskCompletionSource.SetResult(new LiveDownloadOperation(downloadOp));
}
}
