本文实例为大家分享了Android九宫格图片展示的具体代码，供大家参考，具体内容如下
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<NewsData.DataBean> 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<NewsData.DataBean> 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<NewsData.DataBean> 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.DataBean>) newsData.getData();
md.setdata((ArrayList<NewsData.DataBean>) 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) {
}
}
效果图：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
