public void Execute(NativeViewHierarchyManager nvhm)
{
var view = nvhm.ResolveView(tag) as FrameworkElement;
if (view == null)
{
promise.Reject(ErrorUnableToSnapshot, "No view found with reactTag: " + tag);
return;
}
try
{
BitmapEncoder image = CaptureView(view);
if ("file" == result)
{
string filePath = GetFilePath();
Stream stream = File.Create(filePath);
image.Save(stream);
promise.Resolve(filePath);
stream.Close();
}
else if ("base64" == result)
{
MemoryStream stream = new MemoryStream();
image.Save(stream);
byte[] imageBytes = stream.ToArray();
string data = Convert.ToBase64String(imageBytes);
promise.Resolve(data);
stream.Close();
}
else if ("data-uri" == result)
{
MemoryStream stream = new MemoryStream();
image.Save(stream);
byte[] imageBytes = stream.ToArray();
string data = Convert.ToBase64String(imageBytes);
data = "data:image/" + extension + ";base64," + data;
promise.Resolve(data);
stream.Close();
}
else
{
promise.Reject(ErrorUnableToSnapshot, "Unsupported result: " + result + ". Try one of: file | base64 | data-uri");
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
promise.Reject(ErrorUnableToSnapshot, "Failed to capture view snapshot");
}
}
public async void Execute(NativeViewHierarchyManager nvhm)
{
var view = nvhm.ResolveView(tag) as FrameworkElement;
if (view == null)
{
promise.Reject(ErrorUnableToSnapshot, "No view found with reactTag: " + tag);
return;
}
try
{
if ("file" == result)
{
using (var ras = new InMemoryRandomAccessStream())
{
await CaptureView(view, ras);
var file = await GetStorageFile();
using (var fileStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
await RandomAccessStream.CopyAndCloseAsync(ras.GetInputStreamAt(0), fileStream.GetOutputStreamAt(0));
promise.Resolve(file.Path);
}
}
}
else if ("base64" == result)
{
using (var ras = new InMemoryRandomAccessStream())
{
await CaptureView(view, ras);
var imageBytes = new byte[ras.Size];
await ras.AsStream().ReadAsync(imageBytes, 0, imageBytes.Length);
string data = Convert.ToBase64String(imageBytes);
promise.Resolve(data);
}
}
else if ("data-uri" == result)
{
using (var ras = new InMemoryRandomAccessStream())
{
await CaptureView(view, ras);
var imageBytes = new byte[ras.Size];
await ras.AsStream().ReadAsync(imageBytes, 0, imageBytes.Length);
string data = Convert.ToBase64String(imageBytes);
data = "data:image/" + extension + ";base64," + data;
promise.Resolve(data);
}
}
else
{
promise.Reject(ErrorUnableToSnapshot, "Unsupported result: " + result + ". Try one of: file | base64 | data-uri");
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
promise.Reject(ErrorUnableToSnapshot, "Failed to capture view snapshot");
}
}
