RecyclerView的使用(二)点击事件

RecyclerView的使用(二)点击事件

RecyclerView的实现了很多功能,但同时有很多功能是需要我们去实现的。RecyclerView的点击事件就需要我们自己去处理。方法就是通过Adapter的View 实现OnClickListener的监听。

基本的Adapter代码为

public class LinearAdapter extends RecyclerView.Adapter<LinearAdapter.MyViewHolder>{
    private Context mContext;
    private List<String> mDatas;
    LinearAdapter(Context mContext,List<String> mDatas){
        this.mContext = mContext;
        this.mDatas = mDatas;
    }
    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(mContext).inflate(R.layout.item_linear,parent,false);
        return new MyViewHolder(v);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        holder.tv.setText(mDatas.get(position));
    }

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

    public class MyViewHolder extends RecyclerView.ViewHolder {
        TextView tv;

        public MyViewHolder(View itemView) {
            super(itemView);
            tv = (TextView) itemView.findViewById(R.id.adapter_linear_text);
        }
    }
}

首先我们需要定义一个接口

    public interface OnItemClickListener{
        //点击事件
        void onItemClick(View v,int position);
        //长按事件
        void onItemLongClick(View v,int position);
    }

    //添加Set方法
        public void setOnItemClickListener(OnItemClickListener mListener){
        this.mListener = mListener;
    }

在onBindViewHolder中添加点击事件回调

holder.tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onItemClick(v, holder.getLayoutPosition());
            }
        });
        holder.tv.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                mListener.onItemLongClick(v, holder.getLayoutPosition());
                return false;
            }
        });

在Activity中使用

//设置Adapter
        mAdapter = new LinearAdapter(this,mDatas);
        mAdapter.setOnItemClickListener(new LinearAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(View v, int position) {
                Toast.makeText(ListViewActivity.this, "点击的位置是："+position, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onItemLongClick(View v, int position) {
                Toast.makeText(ListViewActivity.this, "长点的是："+ position, Toast.LENGTH_SHORT).show();
            }
        });

这样就实现了Item的点击事件