使用Recyclerview实现线性布局和网格布局数据展示

         效果实现图

使用的依赖和权限

implementation 'com.facebook.fresco:fresco:0.12.0'
implementation 'com.squareup.okhttp3:okhttp:3.4.2'
implementation 'com.google.code.gson:gson:2.2.4'
implementation 'com.android.support:recyclerview-v7:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'

<uses-permission android:name="android.permission.INTERNET"/>

activity_questions

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".QuestionsActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="线性布局"
            android:id="@+id/ll"/>
        <Button
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="表格布局"
            android:id="@+id/bg"/>
    </LinearLayout>

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

item

<?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">
    <com.facebook.drawee.view.SimpleDraweeView
        android:id="@+id/iv"
        android:layout_width="match_parent"
        android:layout_height="300dp" />

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/textView"
            android:textSize="20dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="商品信息：" />
        <TextView
            android:id="@+id/tv"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="tv" />
        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <TextView
                android:id="@+id/textView2"
                android:textSize="20dp"
                android:layout_width="80dp"
                android:layout_height="wrap_content"
                android:text="价格：" />
            <TextView
                android:id="@+id/tv2"
                android:textSize="20dp"
                android:textColor="#f00"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="tv2" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

QuestionsActivity

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.view.View;
import android.widget.Button;

import com.bwie.test.adapter.RecyclerviewAdapter;
import com.bwie.test.bean.Bean;
import com.google.gson.Gson;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class QuestionsActivity extends AppCompatActivity implements View.OnClickListener{
    private static final int SUCCESS = 492;
    List<Bean.JsonBean> datas = new ArrayList<>();
    String path = "http://p6acqdvet.bkt.clouddn.com/_data_json.json";
    Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                case SUCCESS:
                    String tvv = (String) msg.obj;
                    Gson gson = new Gson();
                    Bean bean = gson.fromJson(tvv, Bean.class);
                    List<Bean.JsonBean> data = bean.getJson();
                    datas.addAll(data);
            }
        }
    };
    private RecyclerviewAdapter adapter;
    private RecyclerView mRlv;
    private Button ll;
    private Button bg;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_questions);
        //隐藏原有标题
        getSupportActionBar().hide();
        initadd();//初始化
        getOk();
    }

    private void initadd() {
        mRlv = (RecyclerView) findViewById(R.id.rlv);
        ll = findViewById(R.id.ll);//线性布局
        bg = findViewById(R.id.bg);//表格布局
        //按钮的监听
        ll.setOnClickListener(this);
        bg.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.ll:
                //线性布局管理器
                mRlv.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));
                setadapter();
                break;
            case R.id.bg:
                //表格布局管理器
                mRlv.setLayoutManager(new GridLayoutManager(this,2));
                setadapter();
                break;
        }
    }

    private void setadapter() {
        adapter = new RecyclerviewAdapter(this, datas);
        mRlv.setAdapter(adapter);
        adapter.SetOnItemClickListener(new RecyclerviewAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(int position) {
                adapter.swipe(position);
            }
        });
    }

    private void getOk() {
        new Thread() {
            @Override
            public void run() {
                super.run();
                //请求网络得到相应对象
                OkHttpClient client = new OkHttpClient.Builder().build();
                Request request = new Request.Builder().url(path).build();
                try {
                    Response response = client.newCall(request).execute();
                    //得到数据并转型
                    String s = response.body().string();
                    //更新UI不能在子线程中,使用Handler
                    Message message = handler.obtainMessage();
                    message.obj = s;
                    message.what = SUCCESS;
                    handler.sendMessage(message);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }.start();
        return;
    }
}

app文件夹下MyApp

import android.app.Application;
import com.facebook.drawee.backends.pipeline.Fresco;

public class MyApplication extends Application{
    @Override
    public void onCreate() {
        super.onCreate();
        //初始化fresco
        Fresco.initialize(this);
    }
}

inter文件夹下ItemTouchCallBack

import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.helper.ItemTouchHelper;
import com.bwie.test.adapter.RecyclerviewAdapter;

public class ItemTouchCallBack extends ItemTouchHelper.Callback{
    private RecyclerviewAdapter myAdapter;

    public ItemTouchCallBack(RecyclerviewAdapter myAdapter) {
        this.myAdapter = myAdapter;
    }

    /**
     * 获取移动的标记  移动和删除
     * @param recyclerView
     * @param viewHolder
     * @return
     */
    @Override
    public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
        //设置移动的标记
        int dragFlag=ItemTouchHelper.UP|ItemTouchHelper.DOWN|ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT;
        //设置删除的标记
        int swipFlag=ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT;
        //制作两种标记
        int i = ItemTouchHelper.Callback.makeMovementFlags(dragFlag, swipFlag);
        return i;
    }

    /**
     * @param recyclerView
     * @param viewHolder   原先的viewHolder
     * @param target       拖动后的viewHolder
     * @return
     */
    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, 
                                           RecyclerView.ViewHolder target) {
        //切换位置
        int oldPosition = viewHolder.getAdapterPosition();
        int newPosition = target.getAdapterPosition();
        //交换位置--
        myAdapter.onMove(oldPosition,newPosition);
        return true;
    }

    /**
     * 左右移动
     * @param viewHolder
     * @param direction
     */
    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        int adapterPosition = viewHolder.getAdapterPosition();
        myAdapter.swipe(adapterPosition);
    }
}

MoveSwipeListener

public interface MoveSwipeListener {
    void onMove(int oldPosition, int newPosition);
    void swipe(int position);
}

adapter文件夹下RecyclerviewAdapter

import android.content.Context;
import android.content.DialogInterface;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.bwie.test.bean.Bean;
import com.bwie.test.inter.MoveSwipeListener;
import com.bwie.test.mytestquestions.R;
import java.util.List;

public class RecyclerviewAdapter extends RecyclerView.Adapter implements MoveSwipeListener{
    private Context context;
    private List<Bean.JsonBean> datas;
    private OnItemClickListener onItemClickListener;

    public RecyclerviewAdapter(Context context, List<Bean.JsonBean> datas) {
        this.context = context;
        this.datas = datas;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LinearLayout.inflate(context, R.layout.item, null);
        MyViewHolder vh = new MyViewHolder(view);
        return vh;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder,final int position) {
        MyViewHolder vh = (MyViewHolder) holder;
        vh.tv.setText(datas.get(position).getName());
        vh.tv2.setText(datas.get(position).getAgio());
        vh.iv.setImageURI(Uri.parse(datas.get(position).getImage()));
//        ImageLoader.getInstance().displayImage(datas.get(position).getImage(),vh.iv, 
        //  ImageloaderUtil.getImageOptions());

//        final String picUrl = datas.get(position).getImage();
//        final Uri uri = Uri.parse(picUrl);
//        vh.iv.setImageURI(uri);

        vh.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (onItemClickListener != null){
                    onItemClickListener.onItemClick(position);
                }

                /**
                 * 点击条目删除
                 */
                AlertDialog.Builder builder = new AlertDialog.Builder(context);
                builder.setIcon(R.mipmap.ic_launcher);
                builder.setTitle("我是对话框");
                builder.setMessage("我是对话框的内容");
                builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(context, "点击了取消按钮", Toast.LENGTH_SHORT).show();
                        dialog.dismiss();
                    }
                });
                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(context, "点击了确定的按钮", Toast.LENGTH_SHORT).show();
                        dialog.dismiss();
                        //移除数据
                        datas.remove(position);
                        //条目刷新
                        notifyDataSetChanged();
                    }
                });
                AlertDialog dialog = builder.create();
                dialog.show();
            }
        });
    }

    @Override
    public int getItemCount() {
        return datas.size();
    }

    @Override
    public void onMove(int oldPosition, int newPosition) {
    }

    @Override
    public void swipe(int position) {
    }

    public interface OnItemClickListener {
        void onItemClick(int position);
    }

    public void SetOnItemClickListener(OnItemClickListener onItemClickListener){
        this.onItemClickListener = onItemClickListener;
    }

    private class MyViewHolder extends  RecyclerView.ViewHolder {
        private final ImageView iv;
        private final TextView tv;
        private final TextView tv2;
        public MyViewHolder(View itemView) {
            super(itemView);
            iv = itemView.findViewById(R.id.iv);
            tv = itemView.findViewById(R.id.tv);
            tv2 = itemView.findViewById(R.id.tv2);
        }
    }
}

bean文件夹下Bean

import java.util.List;

public class Bean {
    private List<JsonBean> json;
    private List<LikeBean> like;
    public List<JsonBean> getJson() {
        return json;
    }
    public void setJson(List<JsonBean> json) {
        this.json = json;
    }
    public List<LikeBean> getLike() {
        return like;
    }
    public void setLike(List<LikeBean> like) {
        this.like = like;
    }
    public static class JsonBean {
        private int id;
        private String image;
        private String name;
        private String price;
        private String agio;
        private String amount;
        private String chart;
        private List<SwiperBean> swiper;
        public int getId() {
            return id;
        }
        public void setId(int id) {
            this.id = id;
        }
        public String getImage() {
            return image;
        }
        public void setImage(String image) {
            this.image = image;
        }
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public String getPrice() {
            return price;
        }
        public void setPrice(String price) {
            this.price = price;
        }
        public String getAgio() {
            return agio;
        }
        public void setAgio(String agio) {
            this.agio = agio;
        }
        public String getAmount() {
            return amount;
        }
        public void setAmount(String amount) {
            this.amount = amount;
        }
        public String getChart() {
            return chart;
        }
        public void setChart(String chart) {
            this.chart = chart;
        }
        public List<SwiperBean> getSwiper() {
            return swiper;
        }
        public void setSwiper(List<SwiperBean> swiper) {
            this.swiper = swiper;
        }
        public static class SwiperBean {
            
            private String img;
            public String getImg() {
                return img;
            }
            public void setImg(String img) {
                this.img = img;
            }
        }
    }
    public static class LikeBean {
        private int id;
        private String image;
        private String name;
        private String price;
        private String amount;
        private String chart;
        private List<SwiperBeanX> swiper;
        public int getId() {
            return id;
        }
        public void setId(int id) {
            this.id = id;
        }
        public String getImage() {
            return image;
        }
        public void setImage(String image) {
            this.image = image;
        }
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public String getPrice() {
            return price;
        }
        public void setPrice(String price) {
            this.price = price;
        }
        public String getAmount() {
            return amount;
        }
        public void setAmount(String amount) {
            this.amount = amount;
        }
        public String getChart() {
            return chart;
        }
        public void setChart(String chart) {
            this.chart = chart;
        }
        public List<SwiperBeanX> getSwiper() {
            return swiper;
        }
        public void setSwiper(List<SwiperBeanX> swiper) {
            this.swiper = swiper;
        }
        public static class SwiperBeanX {
            private String img;
            public String getImg() {
                return img;
            }
            public void setImg(String img) {
                this.img = img;
            }
        }
    }
}