package com.example.hotsearch;
import android.app.AlertDialog;

import android.content.Context;

import android.graphics.Color;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import androidx.annotation.NonNull;

import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;

import java.util.List;
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {

List<New_> allNews = new ArrayList<>();
public void setAllNews(List<New_> allNews) {
    this.allNews = allNews;
}

@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
    View itemViem = layoutInflater.inflate(R.layout.cell_normal, parent,false);
    return new MyViewHolder(itemViem);
}

@Override
public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
    New_ new_ = allNews.get(position);
    if (position+1<=3){
        holder.textViewNumber.setTextSize(24);
        holder.textViewNumber.setTextColor(Color.parseColor("#ffcc0000"));
    }
    holder.textViewNumber.setText(String.valueOf(position+1));
    holder.editTextTitle.setText(new_.getTitle());
    holder.editTextTitle.setBackground(null);

//        holder.editTextTitle.setEnabled(false);

holder.editTextTitle.setFocusable(false);

if (new_.getCommentCount()>10000){

holder.buttonHot.setText("爆");

holder.buttonHot.setBackgroundResource(R.drawable.btn_circle_bao);

}else if (new_.getCommentCount()>5000){

holder.buttonHot.setBackgroundResource(R.drawable.btn_circle_hot);

}

if (new_.getCommentCount()<5000){

holder.buttonHot.setVisibility(View.INVISIBLE);

}

//直接关闭掉RecyclerView的复用功能

holder.setIsRecyclable(false);

holder.editTextTitle.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {
        }
    });
    holder.textViewSearchNum.setText(String.valueOf(new_.getCommentCount()));
}

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

//用来管理我们新建的ConstraintLayout
static class MyViewHolder extends RecyclerView.ViewHolder {
    TextView textViewNumber,textViewSearchNum;
    EditText editTextTitle;
    Button buttonHot;
    public MyViewHolder(@NonNull View itemView) {
        super(itemView);
        textViewNumber = itemView.findViewById(R.id.textViewNumber);
        editTextTitle = itemView.findViewById(R.id.editTextTitle);
        textViewSearchNum = itemView.findViewById(R.id.textViewSearchNum);
        buttonHot = itemView.findViewById(R.id.buttonHot);
    }
}

}

  
package com.example.hotsearch;
import androidx.appcompat.app.AppCompatActivity;

import androidx.lifecycle.Observer;

import androidx.lifecycle.ViewModelProviders;

import androidx.recyclerview.widget.LinearLayoutManager;

import androidx.recyclerview.widget.RecyclerView;
import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;
import com.google.gson.Gson;

import com.google.gson.reflect.TypeToken;
import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.List;
public class MainActivity extends AppCompatActivity {

NewsViewModel newsViewModel;

RecyclerView recyclerView;

MyAdapter myAdapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final String[] url = {"http://192.168.0.101:8081/new/getTopNewsServlet"};

recyclerView = findViewById(R.id.RecyclerView);

myAdapter = new MyAdapter();

newsViewModel = ViewModelProviders.of(this).get(NewsViewModel.class);

recyclerView.setLayoutManager(new LinearLayoutManager(this));

recyclerView.setAdapter(myAdapter);

newsViewModel.getJson(url[0]);

newsViewModel.getAllNews().observe(this, new Observer<List<New_>>() {

@Override

public void onChanged(List<New_> new_s) {

myAdapter.setAllNews(new_s);

myAdapter.notifyDataSetChanged();

}

});
}

@Override
protected void onDestroy() {
    super.onDestroy();
    newsViewModel.deleteWords();
}

}

  
<!-- 圆角的半径 -->
<corners android:radius="5dp"/>
<!-- 填充颜色 -->
<solid android:color="#B22222"/>

  
<!-- 圆角的半径 -->
<corners android:radius="5dp"/>
<!-- 填充颜色 -->
<solid android:color="#B22222"/>