RecyclerView添加点击事件

最新推荐文章于 2023-11-07 16:15:35 发布

Liu_ser

最新推荐文章于 2023-11-07 16:15:35 发布

阅读量369

点赞数

CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/Liu_ser/article/details/78048048

本文介绍如何使用Android的RecyclerView组件创建一个新闻列表应用，包括依赖添加、布局配置、数据加载及适配器编写等步骤。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

添加依赖

compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'

布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="text.bwie.com.rkao_920.MainActivity">


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

    </android.support.v7.widget.RecyclerView>

</RelativeLayout>

条目布局----------------------------

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="wrap_content"
    android:layout_height="wrap_content">
<ImageView
    android:id="@+id/image"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="20sp"/>
</LinearLayout>

主类：-------------------------------------public class MainActivity extends AppCompatActivity {
     String utl="http://news-at.zhihu.com/api/4/news/latest";
    private RecyclerView recyclerView;
    ArrayList<Bean.StoriesBean> arr=new ArrayList<>();
    private MyAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        x.view().inject(this);
        recyclerView = (RecyclerView) findViewById(R.id.rv);
//这个recycle是listview格式
        recyclerView.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));
//数据请求      
  x.http().get(new RequestParams(utl), new Callback.CommonCallback<String>() {



            @Override
            public void onSuccess(String result) {
                Gson gson=new Gson();
                Bean bean = gson.fromJson(result, Bean.class);
                arr.addAll(bean.getStories());
                adapter = new MyAdapter(MainActivity.this,arr);
                recyclerView.setAdapter(adapter);
                //RecyclerView条目的点击事件
                adapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, int postion) {
                        Toast.makeText(MainActivity.this, arr.get(postion).getTitle(), Toast.LENGTH_SHORT).show();
                    }
                });
            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {

            }

            @Override
            public void onCancelled(CancelledException cex) {

            }

            @Override
            public void onFinished() {

            }
        });


    }
}

适配器----------------------------------------------------------------------

public class MyAdapter  extends RecyclerView.Adapter{
private View view;
private Context mcontext;
private ArrayList<Bean.StoriesBean> mlist=new ArrayList<>();
private OnItemClickListener mClickListener;

public MyAdapter(Context mcontext,ArrayList<Bean.StoriesBean> list) {
        this.mcontext = mcontext;
        this.mlist=list;
        }

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(mcontext).inflate(R.layout.item, null);
        return new ViewHolder(view,mClickListener);

        }

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        ViewHolder viewholder= (ViewHolder)holder;
        viewholder.textview.setText(""+mlist.get(position).getTitle());
        Glide.with(mcontext).load(mlist.get(position).getImages().get(0)).into(viewholder.ima);
        //只给标题设置的点击事件
     /*   viewholder.textview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(mcontext, mlist.get(position).getTitle(), Toast.LENGTH_SHORT).show();
            }
        });*/

        }
//手写的重置数据的方法
public void setdata(ArrayList<Bean.StoriesBean> list){
        if (list!=null&&list.size()>0){
        mlist.addAll(list);
        }

        }
//手写的获得视图的方法
public Bean.StoriesBean getItem(int position){
        return mlist.get(position);

        };

@Override
public int getItemCount() {
        return mlist.size();
        }
//自定义的方法
public void setOnItemClickListener(OnItemClickListener listener){
        this.mClickListener=listener;
        }
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
    private OnItemClickListener mListener;// 声明自定义的接口

    private TextView textview;
    private ImageView ima;
    //把定义的接口作为参数放到方法内
    public ViewHolder(View itemView,OnItemClickListener  listener) {
        super(itemView);

        mListener=listener;
        //给item设置点击事件
        itemView.setOnClickListener(this);

        textview=(TextView)itemView.findViewById(R.id.textview);
        ima=(ImageView)itemView.findViewById(R.id.image);
    }

    @Override
    public void onClick(View v) {
        // getpostion()为Viewholder自带的一个方法，用来获取RecyclerView当前的位置，将此作为参数，传出去
        mListener.onItemClick(v,getPosition());

    }
}
//手写的一个接口
public interface OnItemClickListener {
    public void onItemClick(View view, int postion);
}
}