Is it possible to make a drag shadow opaque?

Dont know if someone is aware of it or not, We can achieve the same using flag DRAG_FLAG_OPAQUE, So the correspondind startDrag method will look like as below:

    View.DragShadowBuilder dragShadowBuilder = new View.DragShadowBuilder(view);
    view.startDrag(clipData, dragShadowBuilder, view, DRAG_FLAG_OPAQUE);

As @Ernir says, there no API get DragShadow. But we know the drag location and drag view so we can draw it ourselves.

I write a simple and function limited demo you can download it here.

It implement a custom ViewGroup named DragContainer, Use it to wrap your original root view in your layout xml.

<info.dourok.android.demo.DragContainer xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <!-- original root view -->
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
         <!-- ... -->
    </RelativeLayout>

</info.dourok.android.demo.DragContainer>

call DragContainer#startDragChild to start drag like that(the demo have more detail):

in Activity:

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mDragContainer = (DragContainer) findViewById(R.id.root);
        View drag = mDragContainer.findViewById(R.id.drag);
        View drop = mDragContainer.findViewById(R.id.drop);
        drag.setTag(IMAGEVIEW_TAG);
        drag.setOnLongClickListener(new View.OnLongClickListener() {
            public boolean onLongClick(View v) {
                ClipData.Item item = new ClipData.Item((CharSequence) v
                        .getTag());
                ClipData dragData = new ClipData((CharSequence) v.getTag(),
                        new String[] { ClipDescription.MIMETYPE_TEXT_PLAIN },
                        item);
                return mDragContainer.startDragChild(v, dragData, // the data to
                                                                    // be
                                                                    // dragged
                        null, // no need to use local data
                        0 // flags (not currently used, set to 0)
                        );

            }
        });


    }

You also can extend DragContainer to draw custom drag shadow, This is a example for your requirement.

public class MyDragContainer extends DragContainer {
    public MyDragContainer(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public MyDragContainer(Context context) {
        super(context, null);
    }

    public MyDragContainer(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    int width;
    int height;
    Bitmap bitmap;

    @Override
    protected void onSetDragTarget(View v) {
        ImageView b = (ImageView) v;
        int x = Character.getNumericValue(b.getContentDescription().charAt(0));
        int y = Character.getNumericValue(b.getContentDescription().charAt(1));
        bitmap = InGameActivity.currentBoardState[x][y].getPicture();
        width = bitmap.getWidth();
        height = bitmap.getHeight();
    }

    @Override
    protected void drawDragShadow(Canvas canvas) {
        Rect source = new Rect(0, 0, InGameActivity.chessSquareHeightWidth, InGameActivity.chessSquareHeightWidth);

        int w =  InGameActivity.chessSquareHeightWidth;
        int h = InGameActivity.chessSquareHeightWidth;

        canvas.translate(getDragX() - w / 2, getDragY() - h / 2);

        canvas.drawBitmap(bitmap, null, source, null);
    }
}

I hope it will help.