public void DidReceiveScriptMessage(WKUserContentController userContentController, WKScriptMessage message)
{
try
{
var data = message.Body.ToString();
var imageBytes = HeatMapHelper.GetHeatMapImageBytes(data);
NSData imageData = NSData.FromArray(imageBytes);
UIImage image = UIImage.LoadFromData(imageData);
_img.Image = image;
_img.Hidden = false;
}
catch (System.Exception e)
{
System.Diagnostics.Debug.WriteLine($"Error decoding heat map image: {e}");
}
}
public void HeatMapRenderCallback(string base64img)
{
var activity = Xamarin.Forms.Forms.Context as Activity;
activity?.RunOnUiThread(async() =>
{
try
{
var imageBytes = HeatMapHelper.GetHeatMapImageBytes(base64img);
Bitmap decodedByte = await BitmapFactory.DecodeByteArrayAsync(imageBytes, 0, imageBytes.Length);
_img.SetImageBitmap(decodedByte);
_img.Visibility = Android.Views.ViewStates.Visible;
}
catch (System.Exception e)
{
System.Diagnostics.Debug.WriteLine($"Error decoding heat map image: {e}");
}
});
}
private async void BaseWebViewScriptNotify(object sender, NotifyEventArgs e)
{
try
{
var bmp = new BitmapImage();
var imageBytes = HeatMapHelper.GetHeatMapImageBytes(e.Value);
using (var ms = new Windows.Storage.Streams.InMemoryRandomAccessStream())
{
using (var writer = new Windows.Storage.Streams.DataWriter(ms.GetOutputStreamAt(0)))
{
writer.WriteBytes(imageBytes);
await writer.StoreAsync();
}
await bmp.SetSourceAsync(ms);
}
imageBytes = null;
_img.Source = bmp;
_img.Visibility = Windows.UI.Xaml.Visibility.Visible;
}
catch { }
}