RecyclerView + Viewholder

ClickableRecyclerViewAdapter.java

package com.yatoo.adapter.recyclerView;


import android.support.v7.widget.RecyclerView;
import android.view.ViewGroup;

/**
 * Created by student5303 on 4/04/16.
 */
public abstract class ClickableRecyclerViewAdapter<VH extends com.yatoo.adapter.recyclerView.ClickableViewHolder> extends RecyclerView.Adapter implements com.yatoo.adapter.recyclerView.ClickableViewHolder.ClickableViewHolderListener {

    public interface ClickableRecyclerViewAdapterListener {
        void onClick(int position);
    }

    private ClickableRecyclerViewAdapterListener listener;

    @Override
    public VH onCreateViewHolder(ViewGroup parent, int viewType) {
        VH clickableViewHolder = instantiateViewHolder(parent, viewType);
        clickableViewHolder.setListener(this);

        return clickableViewHolder;
    }

    public void setListener(ClickableRecyclerViewAdapterListener listener) {
        this.listener = listener;
    }

    @Override
    public final void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        bindCurrentViewHolder((VH)holder, position);
    }

    public abstract void bindCurrentViewHolder(VH holder, int position);

    public abstract VH instantiateViewHolder(ViewGroup parent, int viewType);

    @Override
    public void onClick(int position) {
        if(listener!=null) {
            listener.onClick(position);
        }
    }
}

ClickableViewHolder.java

package com.yatoo.adapter.recyclerView;

import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;

import com.like.LikeButton;
import com.like.OnLikeListener;
import com.yatoo.R;

/**
 * Created by student5303 on 4/04/16.
 */
public class ClickableViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

    public interface ClickableViewHolderListener {
        void onClick(int position);
    }

    private ClickableViewHolderListener listener;

    public ClickableViewHolder(View itemView) {
        super(itemView);

        itemView.setOnClickListener(this);
    }

    public void setListener(ClickableViewHolderListener listener) {
        this.listener = listener;
    }

    @Override
    public void onClick(View view) {
        if(listener!=null) {
            listener.onClick(getAdapterPosition());
        }
    }
}

ItemAdapter.java

package com.yatoo.adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;

import com.yatoo.R;
import com.yatoo.adapter.recyclerView.ClickableRecyclerViewAdapter;
import com.yatoo.model.Item;

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

/**
 * Created by student5303 on 16/03/16.
 */
public class ItemAdapter extends ClickableRecyclerViewAdapter<ItemViewHolder> {

    private List<Item> listItems;
    private LayoutInflater layoutInflater;
    private Context context;
    private int lastPosition = -1;


    public ItemAdapter(Context context) {
        layoutInflater = LayoutInflater.from(context);
        listItems = new ArrayList<>();
        this.context=context;
    }

    public void refreshItem(List<Item> items) {
        listItems.clear();
        listItems.addAll(items);
        this.notifyDataSetChanged();
    }

    @Override
    public void bindCurrentViewHolder(ItemViewHolder holder, int position) {
        Item item = listItems.get(position);
        holder.setItem(item, context);
        //setAnimation(rowItem, position);
        // Set the view to fade in
        //setFadeAnimation(holder.itemView);
    }

    @Override
    public ItemViewHolder instantiateViewHolder(ViewGroup parent, int viewType) {
        //Similaire à l'adapter d'une ListView
        View rowItem = layoutInflater.inflate(R.layout.row_item,
                parent, false);

        ItemViewHolder itemViewHolder = new ItemViewHolder(rowItem);
        itemViewHolder.setListener(this);

        return itemViewHolder;
    }

    @Override
    public int getItemCount() {
        return listItems.size();
    }


    /**
     * Here is the key method to apply the animation
     */
    private void setAnimation(View viewToAnimate, int position)
    {
        // If the bound view wasn't previously displayed on screen, it's animated
        if (position > lastPosition)
        {
            Animation animation = AnimationUtils.loadAnimation(context, android.R.anim.slide_in_left);
            viewToAnimate.startAnimation(animation);
            lastPosition = position;
        }
    }

    private void setFadeAnimation(View view) {
        AlphaAnimation anim = new AlphaAnimation(0.0f, 1.0f);
        anim.setDuration(1000);
        view.startAnimation(anim);
    }
}

ItemViewHolder.java

package com.yatoo.adapter;

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.firebase.database.ChildEventListener;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.database.ValueEventListener;
import com.like.LikeButton;
import com.like.OnLikeListener;
import com.squareup.picasso.Picasso;
import com.yatoo.R;
import com.yatoo.activity.FavoritesActivity;
import com.yatoo.activity.ItemListingActivity;
import com.yatoo.adapter.recyclerView.ClickableViewHolder;
import com.yatoo.manager.SharedPreferenceManager;
import com.yatoo.model.Item;
import com.yatoo.model.Location;
import com.yatoo.utils.Constants;
import com.yatoo.utils.Utils;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;

public class ItemViewHolder extends ClickableViewHolder implements OnLikeListener{

    //private final LikeButton likeButton;
    private Item item;
    private TextView itemTitle, itemPublicationDate, itemLocation;
    private ImageView itemFrontImage;
    private SharedPreferences sp;
    private DatabaseReference mFirebaseRef;
    private Context context;
    private String UserUID;
    private static LikeButton likeButton;


    public ItemViewHolder(View itemView) {
        super(itemView);

        itemTitle = (TextView) itemView.findViewById(R.id.row_item_title_textview);
        itemPublicationDate = (TextView) itemView.findViewById(R.id.row_item_publication_date_textview);
        itemFrontImage = (ImageView) itemView.findViewById(R.id.row_item_thumbnail_imageView);
        itemLocation = (TextView) itemView.findViewById(R.id.row_item_location);
        UserUID = SharedPreferenceManager.getUserUid(itemView.getContext());

        likeButton = (LikeButton) itemView.findViewById(R.id.like_button);
        likeButton.setOnLikeListener(this);

    }

    public void setItem(Item item, Context context) {

        //We check if the item is in the favoriteArray
        for (String s : ItemListingActivity.itemFavoriteArrayList) {
            int i = s.indexOf(item.getUniqueID());
            if (i >= 0) {
                likeButton.setLiked(true);
            }
        }

        this.item = item;
        this.context = context;

        itemTitle.setText(item.getTitle());
        itemLocation.setText(item.getLocation().getCity());
        itemPublicationDate.setText(Utils.getHumanReadableDate(itemView, new Date(item.getPublishedDate())));

        if(item.getFrontImage() != null){

            Picasso.with(context)
                    .load(item.getFrontImage())
                    .into(itemFrontImage);
        }
    }

    @Override
    public void liked(LikeButton likeButton) {

        mFirebaseRef = FirebaseDatabase.getInstance().getReference();
        DatabaseReference queryRef = mFirebaseRef.child("users").child(UserUID).child("favorites").child(item.getUniqueID());

        queryRef.setValue(item, new DatabaseReference.CompletionListener() {
            @Override
            public void onComplete(DatabaseError firebaseError, DatabaseReference firebase) {
                if (firebaseError != null) {
                    Utils.showSnack(itemView, R.string.error_data_not_saved +" "+firebaseError.getMessage());
                }
            }
        });
    }

    @Override
    public void unLiked(LikeButton likeButton) {

        mFirebaseRef = FirebaseDatabase.getInstance().getReference();
        DatabaseReference queryRef = mFirebaseRef.child("users").child(UserUID).child("favorites").child((item.getUniqueID()));

        queryRef.setValue(null, new DatabaseReference.CompletionListener() {
            @Override
            public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
                Log.v(Constants.LOG_TAG, "Viewholder: in on complte Unlike");
                Utils.showSnack(itemView, context.getString(R.string.item_favorite_removed));
            }
        });
    }
}