RecyclerBaseAdapter 和 OnItemClickListener

import android.support.v7.widget.RecyclerView.Adapter;
import android.support.v7.widget.RecyclerView.ViewHolder;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;

import com.tech.frontier.demo.listeners.OnItemClickListener;

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

/**
 * 適用於RecyclerView的抽象Adapter，封裝了數據集、ViewHolder的建立與綁定過程,簡化子類的操做
 *
 * @param <D> 數據集中的類型，例如Article等
 * @param <V> ViewHolder類型
 */
public abstract class RecyclerBaseAdapter<D, V extends ViewHolder> extends Adapter<V> {
    /**
     * RecyclerView中的數據集
     */
    protected final List<D> mDataSet = new ArrayList<D>();
    /**
     * 點擊事件處理回調
     */
    private OnItemClickListener<D> mItemClickListener;

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

    protected D getItem(int position) {
        return mDataSet.get(position);
    }

    public void addItems(List<D> items) {
        // 移除已經存在的數據,避免數據重複
        items.removeAll(mDataSet) ;
        // 添加新數據
        mDataSet.addAll(items);
        notifyDataSetChanged();
    }
    
    public void clear() {
        mDataSet.clear();
        notifyDataSetChanged();
    }

    /*
     * 綁定數據,主要分爲兩步,綁定數據與設置每項的點擊事件處理
     * @see
     * android.support.v7.widget.RecyclerView.Adapter#onBindViewHolder(android
     * .support.v7.widget.RecyclerView.ViewHolder, int)
     */
    @Override
    public final void onBindViewHolder(V viewHolder, int position) {
        final D item = getItem(position);
        bindDataToItemView(viewHolder, item);
        setupItemViewClickListener(viewHolder, item);
    }

    protected View inflateItemView(ViewGroup viewGroup, int layoutId) {
        return LayoutInflater.from(viewGroup.getContext()).inflate(layoutId, viewGroup, false);
    }

    public void setOnItemClickListener(OnItemClickListener<D> mItemClickListener) {
        this.mItemClickListener = mItemClickListener;
    }

    /**
     * ItemView的點擊事件
     * 
     * @param viewHolder
     * @param position
     */
    protected void setupItemViewClickListener(V viewHolder, final D item) {
        viewHolder.itemView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                if (mItemClickListener != null) {
                    mItemClickListener.onClick(item);
                }
            }
        });
    }

    /**
     * 將數據綁定到ItemView上
     */
    protected abstract void bindDataToItemView(V viewHolder, D item);

}

OnItemClickListener

public interface OnItemClickListener<T> {
    public void onClick(T item);
}