Simple RecyclerView.ItemDecoration with fluent api

SpacesItemDecoration.java

import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;


public class SpacesItemDecoration extends RecyclerView.ItemDecoration {

    private final int leftSpace;
    private final int topSpace;
    private final int rightSpace;
    private final int bottomSpace;
    private final boolean skipFirst;

    private SpacesItemDecoration() {
        this(0, 0, 0, 0, false);
    }

    private SpacesItemDecoration(int leftSpace, int topSpace, int rightSpace, int bottomSpace, boolean skipFirst) {
        this.leftSpace = leftSpace;
        this.topSpace = topSpace;
        this.rightSpace = rightSpace;
        this.bottomSpace = bottomSpace;
        this.skipFirst = skipFirst;
    }

    private SpacesItemDecoration(Builder builder) {
        leftSpace = builder.leftSpace;
        topSpace = builder.topSpace;
        rightSpace = builder.rightSpace;
        bottomSpace = builder.bottomSpace;
        skipFirst = builder.skipFirst;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        if (!skipFirst || parent.getChildAdapterPosition(view) != 0) {
            outRect.left = leftSpace;
            outRect.right = rightSpace;
            outRect.top = topSpace;
            outRect.bottom = bottomSpace;
        }
    }


    public static final class Builder {
        private int leftSpace = 0;
        private int topSpace = 0;
        private int rightSpace = 0;
        private int bottomSpace = 0;
        private boolean skipFirst = false;

        public Builder() {
        }

        public Builder left(int val) {
            leftSpace = val;
            return this;
        }

        public Builder top(int val) {
            topSpace = val;
            return this;
        }

        public Builder right(int val) {
            rightSpace = val;
            return this;
        }

        public Builder bottom(int val) {
            bottomSpace = val;
            return this;
        }

        public Builder skipFirst(boolean val) {
            skipFirst = val;
            return this;
        }

        public Builder vertical(int val) {
            topSpace = val;
            bottomSpace = val;
            return this;
        }

        public Builder horizontal(int val) {
            leftSpace = val;
            rightSpace = val;
            return this;
        }

        public SpacesItemDecoration build() {
            return new SpacesItemDecoration(this);
        }
    }
}

Example:

SpacesItemDecoration itemDecoration = new SpacesItemDecoration.Builder()
                .vertical(16)
                .horizontal(8)
                .build();

recyclerView.addItemDecoration(itemDecoration);