拖动时更改DragShadowBuilder（Android）

Question

我想在拖动图像向左拖动时将拖动图像颜色的边框更改为红色，如果向右拖动则将蓝色更改为蓝色。不是拖后但是在拖动时。这可能吗？我正在谈论的是在拖动时更改DragShadowBuilder图像。我有这段代码：

drop.setOnDragListener(new View.OnDragListener() {
        @Override
        public boolean onDrag(View v, DragEvent event) {
            Float y1 = event.getX();
            Float x1 = event.getY();
            switch (event.getAction()) {
                case DragEvent.ACTION_DRAG_STARTED:
                    // Do nothing
                    break;

                case DragEvent.ACTION_DRAG_ENTERED:
                    x1 =  event.getX();
                    y1 =  event.getY();
                    break;

                case DragEvent.ACTION_DRAG_EXITED:
                    Log.d("msg", "Action is DragEvent.ACTION_DRAG_EXITED");
                    cView.setVisibility(View.VISIBLE);
                    break;

                case DragEvent.ACTION_DRAG_LOCATION:
                    Float x2 = event.getX();
                    Float y2 = event.getY();
                    if (x2 > x1) {
                        cView.setBorderColor(Integer.parseInt("2E4172", 16) + 0xFF000000);
                        cView.setShadowColor(Integer.parseInt("4F628E", 16) + 0xFF000000);
                    } else {
                        cView.setBorderColor(Integer.parseInt("AA3939", 16) + 0xFF000000);
                        cView.setShadowColor(Integer.parseInt("D46A6A", 16) + 0xFF000000);
                    }
                    break;

                case DragEvent.ACTION_DRAG_ENDED:
                    // Do nothing
                    cView.setVisibility(View.VISIBLE);
                    break;

                case DragEvent.ACTION_DROP:
                    // Do nothing
                    Log.d("Drop Location", Float.toString(event.getX()) + " : " + Float.toString(event.getY()));
                    cView.setVisibility(View.VISIBLE);
                    String direction = new String();
                    x2 = event.getX();
                    y2 = event.getY();
                    if (x2 > x1) {
                        direction = "right";
                    } else {
                        direction = "left";
                    }

                    Log.d("Going to Directon", direction);
                    break;
                default:
                    break;
            }
            return true;
        }
    });
    cView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            Log.d("Motion Action", event.toString());
            switch (event.getActionMasked()) {

                case MotionEvent.ACTION_DOWN: {
                    // store the X value when the user's finger was pressed down
                    ClipData data = ClipData.newPlainText("", "");
                    View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(cView);
                    cView.startDrag(data, shadowBuilder, cView, 0);
                    cView.setVisibility(View.INVISIBLE);
                    return true;
                }

                case MotionEvent.ACTION_MOVE: {

                }

            }
            return true;
        }
    });