private void OpenCamera()
{
if (_cameraSurface == null)
{
_cameraSurface = new CameraSurface(this);
_cameraFrameLayout.AddView(_cameraSurface);
}
if (_camera == null)
{
// Camera2 API has more capabilities but is more complex to use and not needed for current requirements of Umbella modules
#pragma warning disable 0618
_camera = global::Android.Hardware.Camera.Open();
_cameraSurface.OpenCamera(_camera);
}
else
{
_camera.StartPreview();
}
_ = StartSendingPhotoAsync();
}
protected override async void OnPause()
{
base.OnPause();
_working = false;
if (_camera != null && _cameraSurface != null)
{
await _takePhotoLock.WaitAsync();
_cameraFrameLayout?.RemoveView(_cameraSurface);
_cameraSurface.ReleaseResources();
_cameraSurface = null;
ReleaseCamera();
UnsubscribeFromEvents();
_takePhotoLock.Release();
}
else
{
UnsubscribeFromTakenPhotoButtonsBarEvents();
}
ViewModel.PropertyChanged -= ViewModel_PropertyChanged;
}