// upload file to google drive
public async Task SaveFileToDrive()
{
const string IMAGE_TYPE = "image/jpeg";
const string TEXT_TYPE = "Text/plain";
await _service.UploadFile(DATA_FILE_NAME, TEXT_TYPE);
await _service.UploadFile(IMAGE_FILE_NAME, IMAGE_TYPE);
}
//
private async void ClickUpload(object sender, RoutedEventArgs e)
{
//MessageDialog dialog = new MessageDialog("Google Drive API DLL 一直有問題，會有runtime ERROR.\n 編譯器指出問題出在GoogleDriveServiceForApp", "T^T");
//UICommand button = new UICommand("OK");
//dialog.Commands.Add(button);
//await dialog.ShowAsync();
RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap(); await renderTargetBitmap.RenderAsync(_canvas); StorageFolder folder = ApplicationData.Current.LocalFolder; StorageFile file = await folder.CreateFileAsync(IMAGE_NAME);
if (file != null)
{
await renderTargetBitmap.RenderAsync(_canvas);
IBuffer pixels = await renderTargetBitmap.GetPixelsAsync();
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
BitmapEncoder encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.BmpEncoderId, stream);
encoder.SetPixelData(BitmapPixelFormat.Bgra8, BitmapAlphaMode.Ignore, (uint)_canvas.ActualWidth, (uint)_canvas.ActualHeight, DOTS_PER_INCH, DOTS_PER_INCH, pixels.ToArray());
await encoder.FlushAsync();
}
await _service.UploadFile(IMAGE_NAME, CONTENT_TYPE);
}
}