to create overlap recyclerView items

OverlapItemDecoration.java

/*
 * Copyright (c) 2018, irsalshabirin
 *
 * Licensed under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * Created by irsalshabirin on 23/3/18.
 */

class OverlapItemDecoration extends RecyclerView.ItemDecoration {
    private int mHorizontalSpace = 0;
    private int mVerticalSpace = 0;

    /**
     * @param mHorizontalSpace the value can be either positive or negative
     * @param mVerticalSpace   the value can be either positive or negative
     */
    public OverlapItemDecoration(int mHorizontalSpace, int mVerticalSpace) {
        this.mHorizontalSpace = mHorizontalSpace;
        this.mVerticalSpace = mVerticalSpace;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        int position = parent.getChildAdapterPosition(view);
        boolean reverseLayout = false;
        if (parent.getLayoutManager() instanceof LinearLayoutManager) {
            reverseLayout = ((LinearLayoutManager) parent.getLayoutManager()).getReverseLayout();
        } else {
            return;
        }
        if (position != 0) {
            if (reverseLayout) {
                // mVerticalSpace must negative value
                // top left
                outRect.set(
                        ((position) * mHorizontalSpace),
                        0,
                        0,
                        (mVerticalSpace + Math.abs(mHorizontalSpace))
                );

                // top right
                outRect.set(
                        ((position) * Math.abs(mHorizontalSpace)),
                        0,
                        0,
                        (mVerticalSpace + Math.abs(mHorizontalSpace))
                );
            } else {
                // mVerticalSpace must negative value
                // TODO: 26/03/18 bottom left   

                // bottom right
                outRect.set(
                        ((position) * Math.abs(mHorizontalSpace)),
                        (mVerticalSpace + Math.abs(mHorizontalSpace)),
                        0,
                        0
                );
            }
        }
    }
}

example use :
recyclerView.addItemDecoration(new OverlapItemDecoration(-12, -100));

result :