recyclerView 添加点击事件与下滑线

activity中的代码---------------------------

public class ThirdActivity extends Activity implements OnItemClickListner {

    private RecyclerView recyclerView;
    private ArrayList<String> list;
    private MoreItemAdapter moreItemAdapter;


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


        recyclerView = findViewById(R.id.recycler_view);


        //数据
        list = new ArrayList<>();
        for (int i=0; i<1000;i++){
            list.add("这是条目"+i);
        }


        recyclerView.setLayoutManager(new LinearLayoutManager(ThirdActivity.this));


        //添加分割线....new DividerItemDecoration(this, DividerItemDecoration.VERTICAL)默认的类似黑色的分割线


        //可以使用shape画出一条分割线....然后使用自己的分割线(自己试)
        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
        dividerItemDecoration.setDrawable(getResources().getDrawable(R.mipmap.ic_launcher));


        recyclerView.addItemDecoration(dividerItemDecoration);


        //
        moreItemAdapter = new MoreItemAdapter(ThirdActivity.this, list);
        recyclerView.setAdapter(moreItemAdapter);


        //设置条目的点击事件....实际上是对适配器设置点击事件
        moreItemAdapter.setOnitemClickListner(this);


    }


    @Override
    public void onItemClick(int position) {
        Toast.makeText(ThirdActivity.this,"点击了:"+list.get(position),Toast.LENGTH_SHORT).show();
    }


    @Override
    public void onItemLongClickListner(int position) {
        Toast.makeText(ThirdActivity.this,"长按了:"+list.get(position),Toast.LENGTH_SHORT).show();
    }

}

适配器中的代码---------------------

/**
 * Created by Dash on 2017/11/27.
 *
 * 做多条目的适配器
 */
public class MoreItemAdapter extends RecyclerView.Adapter{
    private Context context;
    private ArrayList<String> list;
    private final int TEXT_ONLY = 0;
    private final int IMAGE_LEFT = 1;
    private final int IMAGE_RIGHT = 2;
    private OnItemClickListner onItemClickListner;




    public MoreItemAdapter(Context context, ArrayList<String> list) {
        this.context = context;
        this.list = list;
    }


    //根据当前展示的视图创建ViewHolder
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        RecyclerView.ViewHolder holder = null;
        View view;
        switch (viewType){
            case TEXT_ONLY:
                view = LayoutInflater.from(context).inflate(R.layout.item_water_layout,parent,false);
                holder = new TextOnlyHolder(view);


                break;
            case IMAGE_LEFT:
                view = LayoutInflater.from(context).inflate(R.layout.image_left_layout,parent,false);
                holder = new ImageLeftHolder(view);




                break;
            case IMAGE_RIGHT:


                view = LayoutInflater.from(context).inflate(R.layout.image_right_layout,parent,false);
                holder = new ImageRightHolder(view);


                break;
        }


        return holder;
    }


    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        //赋值
        if (getItemViewType(position) == TEXT_ONLY){
            ((TextOnlyHolder)holder).textView.setText(list.get(position));


            //触发点击事件
            ((TextOnlyHolder)holder).textView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    onItemClickListner.onItemClick(position);
                    //吐司
                }
            });


            ((TextOnlyHolder)holder).textView.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View view) {
                    onItemClickListner.onItemLongClickListner(position);


                    return true;//自己处理长按事件,,,事件不再向下传递,,,点击事件不会执行
                }
            });


        }else if (getItemViewType(position) == IMAGE_LEFT){
            ((ImageLeftHolder)holder).textView.setText(list.get(position));






        }else if (getItemViewType(position) == IMAGE_RIGHT){
            ((ImageRightHolder)holder).textView.setText(list.get(position));
        }


    }


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


    /**
     * 返回的是当前条目的类型
     * @param position
     * @return
     */
    @Override
    public int getItemViewType(int position) {
        if (position%3 == 0){
            return TEXT_ONLY;
        }else if (position%3 ==1){
            return IMAGE_LEFT;
        }else {
            return IMAGE_RIGHT;
        }
    }




    /**
     * new OnItemClickListner() {
    @Override
    public void onItemClick(int position) {
    Toast.makeText(ThirdActivity.this,"点击了:"+list.get(position),Toast.LENGTH_SHORT).show();
    }


    @Override
    public void onItemLongClickListner(int position) {
    Toast.makeText(ThirdActivity.this,"长按了:"+list.get(position),Toast.LENGTH_SHORT).show();
    }
    }
     * @param onItemClickListner
     */
    public void setOnitemClickListner(OnItemClickListner onItemClickListner) {
        this.onItemClickListner = onItemClickListner;


        //onItemClickListner.onItemClick();
    }
}

ViewHolder中的代码-----------------------

public class TextOnlyHolder extends RecyclerView.ViewHolder {


    public TextView textView;


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


        textView = itemView.findViewById(R.id.text_view);


    }
}