private void updateCameraRunningState(PropertyChangedEventArgs e)
{
if (e.PropertyName == BarcodeScanner.PreviewActiveProperty.PropertyName)
{
if (barcodeScanner.PreviewActive)
{
startSession();
barcodeScanner.OnPreviewActivated();
}
else
{
stopSession();
barcodeScanner.OnPreviewDeactivated();
}
}
if (e.PropertyName == VisualElement.IsEnabledProperty.PropertyName)
{
if (barcodeScanner.IsEnabled)
{
startSession();
barcodeScanner.OnCameraOpened();
}
else
{
stopSession();
barcodeScanner.OnCameraReleased();
}
}
}
public void HaltPreview()
{
try {
autoFocus.Enabled = false;
cameraSource?.StopPreview();
previewActive = false;
renderer.OnPreviewDeactivated();
} catch (Exception ex) {
this.Debug("Unable to halt preview.");
this.Debug(ex.ToString());
}
}
