protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            SetContentView(Resource.Layout.activity_bcr_customview);
            linearLayout = (FrameLayout)FindViewById(Resource.Id.rim);
            light_layout = (View)FindViewById(Resource.Id.light_layout);
            img          = (ImageView)FindViewById(Resource.Id.imageButton2);
            callback     = new CustomViewBcrResultCallback(this);
            // Calculate the coordinate information of the custom interface
            Rect mScanRect = CreateScanRectFromCamera();

            remoteView = new CustomView.Builder()
                         .SetContext(this)
                         // Set the rectangular coordinate setting of the scan frame, required, otherwise it will not be recognized.
                         .SetBoundingBox(mScanRect)
                         // Set the type of result that the bank card identification expects to return.
                         // MLBcrCaptureConfig.ResultSimple:Only identify the card number and validity period information.
                         // MLBcrCaptureConfig.ResultAll:Identify information such as card number, expiration date, issuing bank, issuing organization, and card type.
                         .SetResultType(MLBcrCaptureConfig.ResultSimple)
                         // Set result monitoring
                         .SetOnBcrResultCallback(callback).Build();

            // External calls need to be made explicitly, depending on the life cycle of the current container Activity or ViewGroup
            remoteView.OnCreate(savedInstanceState);
            FrameLayout.LayoutParams lparams = new FrameLayout.LayoutParams(LinearLayout.LayoutParams.MatchParent,
                                                                            LinearLayout.LayoutParams.MatchParent);
            linearLayout.AddView(remoteView, lparams);
            // Draw custom interface according to coordinates
            // In this step, you can also draw other such as scan lines, masks, and draw prompts or other buttons according to your needs.
            AddMainView(mScanRect);

            light_layout.Click += delegate
            {
                remoteView.SwitchLight();
                isLight = !isLight;
                if (isLight)
                {
                    img.SetBackgroundResource(Resource.Drawable.rn_eid_ic_hivision_light_act);
                }
                else
                {
                    img.SetBackgroundResource(Resource.Drawable.rn_eid_ic_hivision_light);
                }
            };
        }