RecycleView多条目加载

1.导入RecycleView的依赖和
compile ‘com.android.support:recyclerview-v7:23.2.0’
//图片加载框架加载图片
compile ‘com.squareup.picasso:picasso:2.5.1’
2.创建适配器

import android.content.Context;import android.support.v7.widget.RecyclerView;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.TextView;import com.comm.text.R;import com.squareup.picasso.Picasso;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;/** * Created by Love_you on 2017/10/13 0013. */public class Recycler_variety_Adapter extends RecyclerView.Adapter {    //定义三种常量  表示三种条目类型    public static final int TYPE_PULL_IMAGE = 0;    public static final int TYPE_RIGHT_IMAGE = 1;    private Context context;    private JSONArray data;    private JSONArray image_list;    private String url;    public Recycler_variety_Adapter(Context context, JSONArray data) {        this.context = context;        this.data = data;    }    //加载视图    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        //创建不同的 ViewHolder        View view;        //根据viewtype来创建条目        if(viewType==TYPE_PULL_IMAGE){            view =View.inflate(context, R.layout.item_right_img,null);            return new PullImageHolder(view);        }else if(viewType==TYPE_RIGHT_IMAGE){            view =View.inflate(context,R.layout.item_pull_img,null);            return new RightImageHolder(view);        }        return null;    }    //加载数据    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        try {            JSONObject jsonObject = data.getJSONObject(position);            String title = jsonObject.getString("title");            Log.i("title",title);//            for (int i = 0; i < image_list.length(); i++) {//                url = image_list.getJSONObject(i).getString("url");//            }            if(holder instanceof PullImageHolder){                ((PullImageHolder) holder).textbiao.setText(title);            }else if(holder instanceof RightImageHolder){                ((RightImageHolder) holder).texttu.setText(title);                Picasso.with(context).load(image_list.getJSONObject(0).getString("url")).placeholder(R.mipmap.ic_launcher).into(((RightImageHolder) holder).imageView1);                Picasso.with(context).load(image_list.getJSONObject(1).getString("url")).placeholder(R.mipmap.ic_launcher).into(((RightImageHolder) holder).imageView2);                Picasso.with(context).load(image_list.getJSONObject(2).getString("url")).placeholder(R.mipmap.ic_launcher).into(((RightImageHolder) holder).imageView3);            }        } catch (JSONException e) {            e.printStackTrace();        }    }    //数量    @Override    public int getItemCount() {        return data.length();    }    //根据条件返回条目的类型    @Override    public int getItemViewType(int position) {        try {            JSONObject jsonObject = data.getJSONObject(position);            image_list = jsonObject.getJSONArray("image_list");            if(image_list.length()==0){                return TYPE_PULL_IMAGE;            }else if (image_list.length()==3){                return TYPE_RIGHT_IMAGE;            }        } catch (JSONException e) {            e.printStackTrace();        }        return TYPE_PULL_IMAGE;    }    /**     * 创建二种ViewHolder     */    private class PullImageHolder extends RecyclerView.ViewHolder {        private TextView textbiao;        public PullImageHolder(View itemView) {            super(itemView);            textbiao = itemView.findViewById(R.id.textbiao);        }    }    private class RightImageHolder extends RecyclerView.ViewHolder {        private TextView texttu;        private ImageView imageView1;        private ImageView imageView2;        private ImageView imageView3;        public RightImageHolder(View itemView) {            super(itemView);            texttu = itemView.findViewById(R.id.texttu);            imageView1 = itemView.findViewById(R.id.imageView1);            imageView2 = itemView.findViewById(R.id.imageView2);            imageView3 = itemView.findViewById(R.id.imageView3);        }    }}

3.写布局item_pull_img

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <ImageView            android:id="@+id/imageView1"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:src="@mipmap/ic_launcher"/>        <ImageView            android:id="@+id/imageView2"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:src="@mipmap/ic_launcher"/>        <ImageView            android:id="@+id/imageView3"            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:src="@mipmap/ic_launcher"/>    </LinearLayout>    <TextView        android:id="@+id/texttu"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:text="标题"/></LinearLayout>

写布局item_right_img

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:id="@+id/textbiao"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20dp"        android:text="展示标题"/></LinearLayout>

4.Acitvity的代码

import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.util.Log;import android.view.View;import com.comm.text.R;import com.comm.text.adapter.Recycler_variety_Adapter;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import java.io.IOException;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;import text.bwie.com.okhttpclient.util.OkHttp3Utils;public class MainActivity extends AppCompatActivity {    private RecyclerView recyclerView;    private String path="http://ic.snssdk.com/2/article/v25/stream/?count=20&min_behot_time=1455521444&bd_city=%E5%8C%97%E4%BA%AC%E5%B8%82&bd_latitude=40.049317&bd_longitude=116.296499&bd_loc_time=1455521401&loc_mode=5&lac=4527&cid=28883&iid=3642583580&device_id=11131669133&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=SCH-I919U&os_api=19&os_version=4.4.2&uuid=285592931621751&openudid=AC9E172CE2490000";    private JSONObject jsonObject= null;    private Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            if(msg.what==0){                String json = (String) msg.obj;                Log.i("json",json);                try {                    jsonObject = new JSONObject(json);                    JSONArray data = jsonObject.getJSONArray("data");                    Recycler_variety_Adapter adapter=new Recycler_variety_Adapter(MainActivity.this,data);                    recyclerView.setAdapter(adapter);                } catch (JSONException e) {                    e.printStackTrace();                }            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        isitView();//初始化控件        getData(path);//网络请求数据        /**         * 通过这三种方法进行三种不同的样式的显示         */        //设置LinearLayoutManager布局管理器        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);        //设置GridLayoutManager布局管理器        GridLayoutManager gridLayoutManager = new GridLayoutManager(this, 2);        //设置StaggeredGridLayoutManager布局管理器        StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL);        //把布局管理器给RecyclerView        recyclerView.setLayoutManager(linearLayoutManager);    }    //初始化控件    private void isitView() {        recyclerView = (RecyclerView) findViewById(R.id.recycle);    }    //网络请求数据    public void getData(String url) {        OkHttp3Utils.doGet(url, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String string = response.body().string();                Message message=new Message();                message.obj=string;                message.what=0;                handler.sendMessage(message);            }        });    }}