import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.poliveira.parallaxrecyclerview.ParallaxRecyclerAdapter;

import java.util.ArrayList;
import java.util.List;


public class MainActivity extends FragmentActivity {

    private RecyclerView rvVertical;
    private RecyclerView rvHorizontal;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        rvVertical = (RecyclerView)findViewById(R.id.rvVertical);
        rvHorizontal = (RecyclerView)findViewById(R.id.rvHorizontal);

        ArrayList<HorizontalListModel> horizontalList = new ArrayList<HorizontalListModel>();
        ArrayList<VerticalListModel> verticalList = new ArrayList<VerticalListModel>();

        HorizontalListModel hModel;
        VerticalListModel vModel;

        for(int i = 0; i < 100; i ++){
            hModel = new HorizontalListModel();
            hModel.setDate(i);
            hModel.setUnion_tag(i);
            horizontalList.add(hModel);

            vModel = new VerticalListModel();
            vModel.setTitle("item " + i);
            vModel.setUnion_tag(i);
            verticalList.add(vModel);
        }

        MyHorizontalAdapter horizontalAdapter = new MyHorizontalAdapter(this, horizontalList);
        MyVerticalAdapter verticalAdapter = new MyVerticalAdapter(this, verticalList);

        LinearLayoutManager layoutManagerHorizontal = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
        LinearLayoutManager layoutManagerVertical = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);

        rvVertical.setLayoutManager(layoutManagerVertical);
        rvHorizontal.setLayoutManager(layoutManagerHorizontal);

        rvVertical.setAdapter(verticalAdapter);
        rvHorizontal.setAdapter(horizontalAdapter);

        int width = getWindowManager().getDefaultDisplay().getWidth();
        int height = getWindowManager().getDefaultDisplay().getHeight();

        Log.e("screen size: ", "height: " + height + " width: " + width);

        rvHorizontal.setOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                rvVertical.scrollBy(dy, dx);
            }
        });

        rvVertical.setOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                rvHorizontal.scrollBy(dy, dx);
            }
        });

    }

    class MyHorizontalAdapter extends ParallaxRecyclerAdapter<HorizontalListModel> {
        Activity activity;
        List<HorizontalListModel> list;

        public MyHorizontalAdapter(Activity activity, List<HorizontalListModel> list){
            super(list);
            this.list = list;
            this.activity = activity;
        }

        @Override
        public void onBindViewHolderImpl(RecyclerView.ViewHolder viewHolder, ParallaxRecyclerAdapter<HorizontalListModel> adapter, int i) {
            ((ViewHolder) viewHolder).day.setText(String.valueOf(list.get(i).getDate()));
        }

        @Override
        public RecyclerView.ViewHolder onCreateViewHolderImpl(ViewGroup viewGroup, ParallaxRecyclerAdapter<HorizontalListModel> adapter, int i) {
            return new ViewHolder(activity.getLayoutInflater().inflate(R.layout.horizontal, viewGroup, false));
        }

        @Override
        public int getItemCountImpl(ParallaxRecyclerAdapter<HorizontalListModel> adapter) {
            return list.size();
        }

        class ViewHolder extends RecyclerView.ViewHolder{
            private TextView day;
            public ViewHolder(View holderView) {
                super(holderView);
                day = (TextView) holderView.findViewById(R.id.day);
            }
        }
    }

    class MyVerticalAdapter extends ParallaxRecyclerAdapter<VerticalListModel> {
        Activity activity;
        List<VerticalListModel> list;

        public MyVerticalAdapter(Activity activity, List<VerticalListModel> list){
            super(list);
            this.list = list;
            this.activity = activity;
        }

        @Override
        public void onBindViewHolderImpl(RecyclerView.ViewHolder viewHolder, ParallaxRecyclerAdapter<VerticalListModel> adapter, int i) {
            ((ViewHolder) viewHolder).text.setText(list.get(i).getTitle());
        }

        @Override
        public RecyclerView.ViewHolder onCreateViewHolderImpl(ViewGroup viewGroup, ParallaxRecyclerAdapter<VerticalListModel> adapter, int i) {
            return new ViewHolder(activity.getLayoutInflater().inflate(R.layout.vertical, viewGroup, false));
        }

        @Override
        public int getItemCountImpl(ParallaxRecyclerAdapter<VerticalListModel> adapter) {
            return list.size();
        }

        class ViewHolder extends RecyclerView.ViewHolder{
            private TextView text;
            public ViewHolder(View holderView) {
                super(holderView);
                text = (TextView) holderView.findViewById(R.id.text);
            }
        }
    }
}

private static boolean onScrollVertical = true;
private static boolean onScrollHorizontal = true;

  rvHorizontal.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);

            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                if(onScrollVertical){
                    onScrollHorizontal = false;
                    rvVertical.scrollBy(dy, dx);
                    onScrollHorizontal = true;
                }
            }
        });


        rvVertical.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }

            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                if(onScrollHorizontal){
                    onScrollVertical = false;
                    rvHorizontal.scrollBy(dy, dx);
                    onScrollVertical = true;
                }
            }
        });