bug:scroll up or down will be flashing about adaptivetablelayout HOT 3 CLOSED

public void scrollBy(int x, int y) {
    // block scroll one axle
    int tempX = mState.isRowDragging() ? 0 : x;
    int tempY = mState.isColumnDragging() ? 0 : y;

    int diffX = tempX;
    int diffY = tempY;

    int shadowShiftX = mManager.getColumnCount() * mSettings.getCellMargin();
    int shadowShiftY = mManager.getRowCount() * mSettings.getCellMargin();

    long maxX = mManager.getFullWidth() + shadowShiftX;
    long maxY = mManager.getFullHeight() + shadowShiftY;

    if (mState.getScrollX() + tempX < 0) {
        // scroll over view to the left
        diffX = mState.getScrollX();
        mState.setScrollX(0);
    } else if (mSettings.getLayoutWidth() > maxX) {
        // few items and we have free space.
        diffX = 0;
        mState.setScrollX(0);
    } else if (mState.getScrollX() + mSettings.getLayoutWidth() + tempX > maxX) {
        // scroll over view to the right
        diffX = (int) (maxX - mState.getScrollX() - mSettings.getLayoutWidth());

        mState.setScrollX(mState.getScrollX() + diffX);
    } else {
        mState.setScrollX(mState.getScrollX() + tempX);
    }

    if (mState.getScrollY() + tempY < 0) {
        // scroll over view to the top
        diffY = mState.getScrollY();
        mState.setScrollY(0);
    } else if (mSettings.getLayoutHeight() > maxY) {
        // few items and we have free space.
        diffY = 0;
        mState.setScrollY(0);
    } else if (mState.getScrollY() + mSettings.getLayoutHeight() + tempY > maxY) {
        // scroll over view to the bottom
        diffY = (int) (maxY - mState.getScrollY() - mSettings.getLayoutHeight());
        mState.setScrollY(mState.getScrollY() + diffY);
    } else {
        mState.setScrollY(mState.getScrollY() + tempY);
    }

    if (diffX == 0 && diffY == 0) {
        return;
    }

    if (mAdapter != null) {
        // refresh views
        recycleViewHolders();
        mVisibleArea.set(mState.getScrollX(),
                mState.getScrollY(),
                mState.getScrollX() + mSettings.getLayoutWidth(),
                mState.getScrollY() + mSettings.getLayoutHeight());
        addViewHolders(mVisibleArea);
        refreshViewHolders();
    }
}