简单利用RecyclerView实现ListView的点击事件

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首先点击file-->project-->选中新创建的工程-->dependencies-->点击“+”号-->选中第一个-->找到recyclerview-v7 (com.android.support:recyclerview-v7:25.3.1)-->ok

接着创建布局：

<android.support.v7.widget.RecyclerView    android:id="@+id/rv"    android:layout_width="match_parent"    android:layout_height="match_parent" />

public class MainActivity extends AppCompatActivity {    RecyclerView rv;    List<String> list=new ArrayList<String>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        rv= (RecyclerView) findViewById(R.id.rv);        //模拟假数据        for(int i=0;i<100;i++){            list.add("条目"+i);        }        LinearLayoutManager manager=new LinearLayoutManager(this);        rv.setLayoutManager(manager);        //创建适配器        MyAdapter adapter=new MyAdapter();        rv.setAdapter(adapter);        //设置点击事件        adapter.setOnItemClickListener(new OnItemClickListener() {            @Override            public void OnItemClick(View view, int position) {                Toast.makeText(MainActivity.this,"------"+position,Toast.LENGTH_LONG).show();            }        });    }    public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{        //利用接口回调实现点击事件        OnItemClickListener listener;        public void setOnItemClickListener(OnItemClickListener listener){            this.listener=listener;        }        @Override        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {            //加载布局            View view=View.inflate(MainActivity.this,R.layout.item,null);            //每次点击时都会调用此方法            view.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    //有可能传过来的listener为null                    if(listener!=null){                        //view为每次点击时的条目                        //view.getTag()获得条目下标position                        listener.OnItemClick(view,(int)view.getTag());                    }                }            });            //返回加载的视图            return new LeftViewHolder(view);        }        @Override        public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {            //为每个条目赋值            ((LeftViewHolder)holder).tv.setText(list.get(position));            //把条目的下标position设置给holder            holder.itemView.setTag(position);        }        @Override        public int getItemCount() {            //用三元表达式  如果集合list为空的话返回数目为零否则返回集合数目            return list!=null?list.size():0;        }        public class LeftViewHolder extends RecyclerView.ViewHolder{            TextView tv;            public LeftViewHolder(View itemView) {                super(itemView);                tv=itemView.findViewById(R.id.tv);            }        }    }    public interface OnItemClickListener{        public void OnItemClick(View view,int position);    }}

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