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How to realize the data list display effect by using RecyclerView in Android

2025-02-25 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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今天小编给大家分享一下Android中如何利用RecyclerView实现数据列表展示效果的相关知识点,内容详细,逻辑清晰,相信大部分人都还太了解这方面的知识,所以分享这篇文章给大家参考一下,希望大家阅读完这篇文章后有所收获,下面我们一起来了解一下吧。

1.首先导入依赖:

compile 'com.android.support:recyclerview-v7:25.3.1'

2.适配器类:

public class NewsAdapter extends RecyclerView.Adapter { private View view; private Context mcontext; private ArrayList mlist=new ArrayList(); public NewsAdapter(Context mcontext) { this.mcontext = mcontext; } //找到需要导入的布局 @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { view = LayoutInflater.from(mcontext).inflate(R.layout.news_item, null); return new ViewHolder(view); } //加载相应的内容 @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { ViewHolder viewholder=(ViewHolder)holder; viewholder.textview.setText(""+getItem(position).getNews_title()); Glide.with(mcontext).load(getItem(position).getPic_url()).into(viewholder.ima); } //手写的重置数据的方法 public void setdata(ArrayList list){ if (list!=null&&list.size()>0){ mlist.addAll(list); } } //手写的获得视图的方法 public NewsData.DataBean getItem(int position){ return mlist.get(position); }; @Override public int getItemCount() { return mlist.size(); } //定义的ViewHolder类继承RecyclerView.ViewHolder 并找到布局中的ID public class ViewHolder extends RecyclerView.ViewHolder{ private TextView textview; private ImageView ima; public ViewHolder(View itemView) { super(itemView); textview=(TextView)itemView.findViewById(R.id.tv); ima=(ImageView)itemView.findViewById(R.id.image); } }}

3.主界面(用到RecyclerView的主要是initdata()方法和Handler):

public class MainActivity extends AppCompatActivity implements IMainView{ private MainPresenter mainp; private NewsAdapter md; private RecyclerView recy; private ArrayList mlist=new ArrayList(); private String url="http://api.expoon.com/AppNews/getNewsList/type/1/p/1"; private Handler hand=new Handler(){ @Override public void handleMessage(Message msg) { super.handleMessage(msg); Gson gson=new Gson(); if (msg.what==1) { NewsData newsData = gson.fromJson(msg.obj.toString(), NewsData.class); mlist=(ArrayList) newsData.getData(); md.setdata((ArrayList) mlist); md.notifyDataSetChanged(); } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initview(); initdata(); initdatafromserver(); } private void initview() { recy=(RecyclerView)findViewById(R.id.recy); } private void initdatafromserver() { //加载网络数据,找P层去要 mainp.loadDataFromServer(url); } private void initdata() { mainp=new MainPresenter(this); //设置适配器 md=new NewsAdapter(this); //创建默认的线性LayoutManager recy.setLayoutManager(new LinearLayoutManager(this)); recy.setAdapter(md); } //重写的IMainView类接口的两个方法 @Override public void successfulCallback(String str) { Message msg = Message.obtain(); msg.what=1; msg.obj=str; hand.sendMessage(msg); } @Override public void errCallback(int code, String msg) { }}以上就是"Android中如何利用RecyclerView实现数据列表展示效果"这篇文章的所有内容,感谢各位的阅读!相信大家阅读完这篇文章都有很大的收获,小编每天都会为大家更新不同的知识,如果还想学习更多的知识,请关注行业资讯频道。

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