public async Task UploadPicture(UploadViewModel uploadViewModel)
{
var sasUrl = await this.mobileService.GenerateStorageAccessSignatureAsync(uploadViewModel.ImageIdentifier);
var request = HttpWebRequest.Create(sasUrl) as HttpWebRequest;
request.Method = "PUT";
uploadViewModel.PictureStream.Position = 0;
#if ANDROID
request.ContentLength = uploadViewModel.PictureStream.Length;
#else
request.Headers["Content-Length"] = uploadViewModel.PictureStream.Length.ToString();
#endif
request.Headers["x-ms-blob-type"] = "BlockBlob";
var pictureData = new byte[uploadViewModel.PictureStream.Length];
await uploadViewModel.PictureStream.ReadAsync(pictureData, 0, (int)uploadViewModel.PictureStream.Length);
using (var requestStream = await Task.Factory.FromAsync<Stream>(request.BeginGetRequestStream, request.EndGetRequestStream, null))
{
await requestStream.WriteAsync(pictureData, 0, pictureData.Length);
}
var response = await Task.Factory.FromAsync<WebResponse>(request.BeginGetResponse, request.EndGetResponse, null);
}
public async Task<string> UploadImage(Bitmap bitmap)
{
var uploadVM = new UploadViewModel();
var stream = new MemoryStream();
bitmap.Compress(Bitmap.CompressFormat.Png, 0, stream);
uploadVM.PictureStream = stream;
uploadVM.ImageIdentifier = Guid.NewGuid() + ".bmp";
await azureStorageService.UploadPicture(uploadVM);
return string.Format("{0}{1}", AndroidPollImageViewModel.PollPicturesUrlBase, uploadVM.ImageIdentifier);
}
public async Task<UploadViewModel> ShowChooser()
{
UploadViewModel uploadViewModel = null;
#if ANDROID
var uiContext = new Services.UiContext();
var mediaPicker = new Xamarin.Media.MediaPicker(uiContext.CurrentContext);
#elif IOS
var mediaPicker = new Xamarin.Media.MediaPicker();
#endif
#if __MOBILE__
try
{
var mediaFile = await mediaPicker.PickPhotoAsync().ConfigureAwait(false);
if (mediaFile != null)
{
uploadViewModel = new UploadViewModel();
uploadViewModel.PictureStream = mediaFile.GetStream();
uploadViewModel.ImageIdentifier = Guid.NewGuid() + Path.GetExtension(mediaFile.Path);
}
}
catch (TaskCanceledException ex)
{
// Happens if they don't select an image and press the
// back button. Just continue as it is an expected
// exception.
Insights.Report(ex);
}
#else
var openPicker = new FileOpenPicker { ViewMode = PickerViewMode.Thumbnail, SuggestedStartLocation = PickerLocationId.PicturesLibrary };
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".bmp");
var file = await openPicker.PickSingleFileAsync();
if (file != null)
{
uploadViewModel = new UploadViewModel();
uploadViewModel.PictureFile = file;
uploadViewModel.PictureStream = await file.OpenReadAsync();
uploadViewModel.ImageIdentifier = Guid.NewGuid() + file.FileType;
}
#endif
return uploadViewModel;
}
public async Task UploadPicture(UploadViewModel uploadViewModel)
{
var sasUri = new Uri(await this.mobileService.GenerateStorageAccessSignatureAsync(uploadViewModel.ImageIdentifier));
var sasKey = sasUri.Query.Substring(1);
var blobService = new CloudBlobClient(
new Uri(string.Format("{0}://{1}", sasUri.Scheme, sasUri.Host), UriKind.Absolute),
new StorageCredentials(sasKey));
var container = blobService.GetContainerReference(Container);
var blob = container.GetBlockBlobReference(uploadViewModel.ImageIdentifier);
using (var fileStream = await uploadViewModel.PictureFile.OpenAsync(FileAccessMode.Read))
{
await blob.UploadFromStreamAsync(fileStream);
}
}
public async Task<UploadViewModel> ShowChooser()
{
UploadViewModel uploadViewModel = null;
var openPicker = new FileOpenPicker { ViewMode = PickerViewMode.Thumbnail, SuggestedStartLocation = PickerLocationId.PicturesLibrary };
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".bmp");
var file = await openPicker.PickSingleFileAsync();
if (file != null)
{
uploadViewModel = new UploadViewModel();
uploadViewModel.PictureFile = file;
uploadViewModel.PictureStream = await file.OpenReadAsync();
uploadViewModel.ImageIdentifier = Guid.NewGuid() + file.FileType;
}
return uploadViewModel;
}
public async Task UploadPicture(UploadViewModel uploadViewModel)
{
var sasUrl = await this.mobileService.GenerateStorageAccessSignatureAsync().ConfigureAwait(false);
#if NETFX_CORE
var blobService = new CloudBlobClient(
new Uri(sasUrl.Replace("\"", string.Empty), UriKind.Absolute));
var container = blobService.GetContainerReference(Container);
var blob = container.GetBlockBlobReference(uploadViewModel.ImageIdentifier);
using (var fileStream = await uploadViewModel.PictureFile.OpenAsync(FileAccessMode.Read))
{
await blob.UploadFromStreamAsync(fileStream);
}
#else
// strangely it expects /pollimages/pollimages
sasUrl = sasUrl.Replace("/pollimages", String.Format("/pollimages/pollimages/{0}", uploadViewModel.ImageIdentifier));
var request = (HttpWebRequest)WebRequest.Create(sasUrl);
request.Method = "PUT";
uploadViewModel.PictureStream.Position = 0;
request.ContentLength = uploadViewModel.PictureStream.Length;
request.Headers["x-ms-blob-type"] = "BlockBlob";
request.Headers["x-ms-blob-content-disposition"] = String.Format("attachment; filename=\"pollimages/{0}\"", uploadViewModel.ImageIdentifier);
var pictureData = new byte[uploadViewModel.PictureStream.Length];
await uploadViewModel.PictureStream.ReadAsync(pictureData, 0, (int)uploadViewModel.PictureStream.Length);
using (var requestStream = await Task.Factory.FromAsync<Stream>(request.BeginGetRequestStream, request.EndGetRequestStream, null).ConfigureAwait(false))
{
await requestStream.WriteAsync(pictureData, 0, pictureData.Length).ConfigureAwait(false);
}
var response = await Task.Factory.FromAsync<WebResponse>(request.BeginGetResponse, request.EndGetResponse, null).ConfigureAwait(false);
#endif // NETFX_CORE
}
public async Task<UploadViewModel> ShowChooser()
{
return await Task.Run(() =>
{
var task = new TaskCompletionSource<UploadViewModel>();
EventHandler<PhotoResult> completedHandler = null;
completedHandler = (sender, e) =>
{
this.photoChooserTask.Completed -= completedHandler;
if (e.Error != null)
{
task.SetException(e.Error);
}
else
{
UploadViewModel uploadViewModel = null;
if (e.ChosenPhoto != null)
{
uploadViewModel = new UploadViewModel
{
PictureStream = e.ChosenPhoto,
ImageIdentifier = string.Format("{0}.{1}", Guid.NewGuid().ToString(), System.IO.Path.GetExtension(e.OriginalFileName))
};
}
task.SetResult(uploadViewModel);
}
};
this.photoChooserTask.Completed += completedHandler;
this.photoChooserTask.Show();
return task.Task;
});
}
