NavigationDrawerAdapter.java

package com.cjj.nices.adapter;

import android.graphics.Color;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.cjj.nices.activity.R;
import com.cjj.nices.activity.R.color;
import com.cjj.nices.activity.R.id;
import com.cjj.nices.activity.R.layout;
import com.cjj.nices.callback.NavigationDrawerCallbacks;
import com.cjj.nices.model.NavigationItem;
import com.cjj.nices.model.NicesApplication;

import static com.norbsoft.typefacehelper.TypefaceHelper.typeface;
import java.util.List;

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

    private List<NavigationItem> mData;
    private NavigationDrawerCallbacks mNavigationDrawerCallbacks;
    private int mSelectedPosition;
    private int mTouchedPosition;
    private boolean isClick = false;

    public NavigationDrawerAdapter(List<NavigationItem> data) {
        mData = data;
    }

    public NavigationDrawerCallbacks getNavigationDrawerCallbacks() {
        return mNavigationDrawerCallbacks;
    }

    public void setNavigationDrawerCallbacks(NavigationDrawerCallbacks navigationDrawerCallbacks) {
        mNavigationDrawerCallbacks = navigationDrawerCallbacks;
    }

    @Override
    public NavigationDrawerAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.drawer_row, viewGroup, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(NavigationDrawerAdapter.ViewHolder viewHolder, final int i) {
        viewHolder.textView.setText(mData.get(i).getText());
        viewHolder.textView.setCompoundDrawablesWithIntrinsicBounds(mData.get(i).getDrawable(), null, null, null);
        typeface(viewHolder.itemView,NicesApplication.nicesApplication.getKatongTypeface());
        viewHolder.itemView.setOnTouchListener(new View.OnTouchListener() {
                                                   @Override
                                                   public boolean onTouch(View v, MotionEvent event) {

                                                       switch (event.getAction()) {
                                                           case MotionEvent.ACTION_DOWN:
                                                               touchPosition(i);
                                                               return false;
                                                           case MotionEvent.ACTION_CANCEL:
                                                               touchPosition(-1);
                                                               return false;
                                                           case MotionEvent.ACTION_MOVE:
                                                               return false;
                                                           case MotionEvent.ACTION_UP:
                                                               touchPosition(-1);
                                                               return false;
                                                       }
                                                       return true;
                                                   }
                                               }
        );
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
                                                   @Override
                                                   public void onClick(View v) {
                                                       if (mNavigationDrawerCallbacks != null)
                                                           mNavigationDrawerCallbacks.onNavigationDrawerItemSelected(i);
                                                   }
                                               }
        );

        //TODO: selected menu position, change layout accordingly
        if (mSelectedPosition == i || mTouchedPosition == i) {
            viewHolder.itemView.setBackgroundColor(viewHolder.itemView.getContext().getResources().getColor(R.color.selected_gray));
            setTextSelectColor(i,viewHolder.textView);
        } else {
        	viewHolder.textView.setTextColor(Color.BLACK);
            viewHolder.itemView.setBackgroundColor(Color.TRANSPARENT);
        }
    }

    private void setTextSelectColor(int index,TextView tv) {
    	switch(index)
    	{
    	case 0:
    		tv.setTextColor(Color.RED);
    		break;
    	case 1:
    		tv.setTextColor(Color.rgb(52, 134, 248));
    		break;
    	case 2:
    		tv.setTextColor(Color.rgb(251, 192, 45));
    		break;
    	case 3:
    		tv.setTextColor(Color.rgb(250, 67, 122));
    	
    		break;
    	}
	}

	private void touchPosition(int position) {
        int lastPosition = mTouchedPosition;
        mTouchedPosition = position;
        if (lastPosition >= 0)
            notifyItemChanged(lastPosition);
        if (position >= 0)
            notifyItemChanged(position);
    }

    public void selectPosition(int position) {
        int lastPosition = mSelectedPosition;
        mSelectedPosition = position;
        notifyItemChanged(lastPosition);
        notifyItemChanged(position);
    }

    @Override
    public int getItemCount() {
        return mData != null ? mData.size() : 0;
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView textView;

        public ViewHolder(View itemView) {
            super(itemView);
            textView = (TextView) itemView.findViewById(R.id.item_name);
        }
    }
}