private void OnChildAdded(object sender, ElementEventArgs e)
{
Device.BeginInvokeOnMainThread(() =>
{
LogScrollView.ScrollToAsync(LogLayout.Children.Last(), ScrollToPosition.MakeVisible, true);
});
}
void LogToScreen(string text)
{
Log.Text += $"{DateTime.Now.ToLongTimeString()}: {text}\n";
InvalidateMeasure();
LogScrollView.ScrollToAsync(Log, ScrollToPosition.End, false);
}