Show list by RecylerView

fragment_playlist.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#000000">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/songlist"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</FrameLayout>

ItemListener.java

package com.mikkipastel.exoplanet.playlist;

import android.view.View;

public interface ItemListener {
    void onClick(View v, int position);
}

PlaylistFragment.java

package com.mikkipastel.exoplanet.playlist;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.mikkipastel.exoplanet.R;
import com.mikkipastel.exoplanet.player.PlayerActivity;

public class PlaylistFragment extends Fragment implements ItemListener{

    RecyclerView songListView;
    RecyclerAdapter adapter;

    // sample to show before get from firebase storage
    int[] cover = {R.drawable.cover01,
            R.drawable.cover02,
            R.drawable.cover03,
            R.drawable.cover04,
            R.drawable.cover05};

    String[] songname = {"Breaks 6-29-2560 BE, 12_31 PM.wav",
            "Essential EDM 6-23-2560 BE, 5_24 PM.wav",
            "Hip Hop 6-27-2560 BE, 7_12 PM.wav",
            "House 2 6-28-2560 BE, 9_08 PM.wav",
            "House 6-23-2560 BE, 5_43 PM.wav"};

    public PlaylistFragment() {
        super();
    }

    public static PlaylistFragment newInstance() {
        PlaylistFragment fragment = new PlaylistFragment();
        Bundle args = new Bundle();
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_playlist, container, false);
        initInstances(rootView);
        return rootView;
    }

    public void initInstances(View rootView){
        songListView = (RecyclerView) rootView.findViewById(R.id.songlist);

        adapter = new RecyclerAdapter(this, getContext(), cover, songname);
        songListView.setNestedScrollingEnabled(false);
        songListView.setLayoutManager(new LinearLayoutManager(getActivity()
                , LinearLayoutManager.VERTICAL
                , false));
        songListView.setAdapter(adapter);
        adapter.notifyDataSetChanged();
    }

    @Override
    public void onStart() {
        super.onStart();
    }

    @Override
    public void onStop() {
        super.onStop();
    }

    /*
     * Save Instance State Here
     */
    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        // Save Instance State here
    }

    /*
     * Restore Instance State Here
     */
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        if (savedInstanceState != null) {
            // Restore Instance State here
        }
    }

    @Override
    public void onClick(View v, int position) {
        Intent intent = new Intent(getActivity(), PlayerActivity.class);
        intent.putExtra(PlayerActivity.BUNDLE_POSITION, position);
        startActivity(intent);
    }
}

RecyclerAdapter.java

package com.mikkipastel.exoplanet.playlist;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.mikkipastel.exoplanet.R;

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    Context mContext;
    int[] mCover;
    String[] mSongName;

    ItemListener mListener;

    protected int mItemCount = 0;

    public RecyclerAdapter(ItemListener listener, Context context, int[] cover, String[] songname){
        this.mContext = context;
        this.mCover = cover;
        this.mSongName = songname;

        this.mListener = listener;
    }

    @Override
    public RecyclerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item_track, parent, false);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        // set cover and track name
        ViewHolder mHolder = (ViewHolder) holder;
        mHolder.cover.setImageResource(mCover[position]);
        mHolder.name.setText(mSongName[position]);
        mHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onClick(v, position);
            }
        });
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        ImageView cover;
        TextView name;

        public ViewHolder(View view) {
            super(view);
            cover = (ImageView)view.findViewById(R.id.imageTrack);
            name = (TextView)view.findViewById(R.id.nameTrack);
        }
    }

    @Override
    public int getItemCount() {
        int itemCount = mItemCount;
        if (itemCount == 0) {
            itemCount = mSongName.length;
        }
        return itemCount;
    }

}