public static void Share(Context context, Bitmap bitmap, string bitmapSavePath, string title, string subject, string message)
{
bitmap.SaveToFile(bitmapSavePath);
Intent i = new Intent(Intent.ActionSend);
i.SetType("image/png");
i.PutExtra(Intent.ExtraSubject, subject);
i.PutExtra(Intent.ExtraText, message);
File f = new File(bitmapSavePath);
i.PutExtra(Intent.ExtraStream, Uri.FromFile(f));
context.StartActivity(Intent.CreateChooser(i, title));
}