RecyclerView实现简单点击事件

Adapter类中的内容

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements View.OnClickListener {
    private String[] datas;

    public MyAdapter(String[] datas) {
        this.datas = datas;
    }

    private OnItemClickListener mOnItemClickListener = null;

    //define interface
    public static interface OnItemClickListener {
        void onItemClick(View view, int position);
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item, viewGroup, false);
        ViewHolder vh = new ViewHolder(view);
        //将创建的View注册点击事件
        view.setOnClickListener(this);
        return vh;
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int position) {
        viewHolder.mTextView.setText(datas[position]);
        //将position保存在itemView的Tag中，以便点击时进行获取
        viewHolder.itemView.setTag(position);
    }

    @Override
    public void onClick(View v) {
        if (mOnItemClickListener != null) {
            //注意这里使用getTag方法获取position
            mOnItemClickListener.onItemClick(v, (int) v.getTag());
        }
    }

    public void setOnItemClickListener(OnItemClickListener listener) {
        this.mOnItemClickListener = listener;
    }


    //获取数据的数量
    @Override
    public int getItemCount() {
        return datas.length;
    }

    //自定义的ViewHolder，持有每个Item的的所有界面元素
    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView;

        public ViewHolder(View view) {
            super(view);
            mTextView = (TextView) view.findViewById(R.id.text);
        }
    }
}

xml布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:orientation="vertical">

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
LinearLayout>

MainActivity里的代码

public class MainActivity extends AppCompatActivity {
    private RecyclerView mRecyclerView;
    private LinearLayoutManager mLayoutManager;
    private MyAdapter mAdapter;
    private String[] data = new String[]{"1111", "2222", "3333", "4444", "5555", "6666", "7777", "8888", "9999", "aaaa", "bbbb", "cccc", "dddd", "eeee", "ffff", "gggg", "hhhh", "iiii", "jjjj", "kkkk"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mRecyclerView = (RecyclerView) findViewById(R.id.main_rcView);
        mLayoutManager = new LinearLayoutManager(this);
        mRecyclerView.setLayoutManager(mLayoutManager);
        //如果可以确定每个item的高度是固定的，设置这个选项可以提高性能
        mRecyclerView.setHasFixedSize(true);
        //创建并设置Adapter
        mAdapter = new MyAdapter(data);
        mRecyclerView.setAdapter(mAdapter);
        mAdapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(View view, int position) {
                Toast.makeText(MainActivity.this, data[position], 600).show();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        //getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        /*if (id == R.id.action_settings) {
            return true;
        }*/
        return super.onOptionsItemSelected(item);
    }
}