private void TryStart()
{
if (textureView != null && surfaceTexture != null)
{
// If necessary, stops the previously used camera object.
this.Cleanup();
camera = Hardware.Camera.Open();
// set resolution, frame rate, preview format, etc.
var parameters = camera.GetParameters();
parameters.SetPictureSize(640, 480);
camera.SetParameters(parameters);
textureView.LayoutParameters = new FrameLayout.LayoutParams(width, height);
try
{
camera.SetPreviewTexture(surfaceTexture);
camera.StartPreview();
}
catch (IOException ex)
{
var msg = ex.Message;
CurrentState = ScenarioState.Idle;
}
}
}
public void OnPictureTaken(byte[] data, Hardware.Camera camera)
{
// Sets the task result.
var ms = new MemoryStream(data);
pictureResult.SetResult(ms);
camera.StartPreview();
}
private void Cleanup()
{
if (camera != null)
{
camera.SetPreviewTexture(null);
camera.StopPreview();
camera.Release();
camera = null;
this.surfaceTexture = null;
this.textureView = null;
this.pictureResult = null;
CurrentState = ScenarioState.Idle;
}
}
