activity_fin_news

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">

        <ListView
            android:id="@+id/mylistview"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            >
        </ListView>

</LinearLayout>

FinNews.java

package com.example.stock;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;

public class FinNews extends AppCompatActivity {


    ListView listview; // 把視圖的元件宣告成全域變數
    String result; // 儲存JSON資料用的字串

    ArrayList<News> arrayOfWebData = new ArrayList<>();
    static ArrayList<String> resultRow;

    // this is the result object
    class News {
        public String title;
        public String url;
        public String urlToImage;
        public String publishedAt;

    }
    FancyAdapter aa = null;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fin_news);

        // 宣告執行緒
        Thread thread = new Thread(mutiThread);
        thread.start(); // 開始執行

        listview = (ListView) findViewById(R.id.mylistview);

        //we initialize our fancy adapter object, we already declared it above
        //in the class definition
        aa = new FancyAdapter();

        // here we set the adapter, this turns it on
        listview.setAdapter(aa);


    }

    class FancyAdapter extends ArrayAdapter<News>{
        FancyAdapter() {
            super(FinNews.this, android.R.layout.simple_list_item_1, arrayOfWebData);
        }

        public View getView(int position, View convertView,
                            ViewGroup parent) {
            ViewHolder holder;
            //we call an if statement on our view that is passed in,
            //to see if it has been recycled or not.  if it has been recycled,
            //then it already exists and we do not need to call the inflater function
            //this saves us A HUGE AMOUNT OF RESOURCES AND PROCESSING
            //this is the proper way to do it
            if (convertView==null) {
                LayoutInflater inflater=getLayoutInflater();

                convertView=inflater.inflate(R.layout.news_row, null);

                //here is something new.  we are using a class called a view holder
                holder=new ViewHolder(convertView);
                
                //we are using that class to cache the result of the findViewById function
                //which we then store in a tag on the view
                convertView.setTag(holder);
            }
            else
            {
                holder=(ViewHolder)convertView.getTag();
            }
            holder.populateFrom(arrayOfWebData.get(position));

            return(convertView);
        }
    }

    class ViewHolder {
        public TextView title = null;
        public TextView url = null;
        public TextView urlToImage = null;
        public TextView publishedAt = null;

        ViewHolder(View row) {
            title=(TextView)row.findViewById(R.id.title);
            url=(TextView)row.findViewById(R.id.url);
            urlToImage=(TextView)row.findViewById(R.id.urlToImage);
            publishedAt=(TextView)row.findViewById(R.id.publishedAt);
        }
        //notice we had to change our populate from to take an arguement of type person
        void populateFrom(News r) {
            title.setText(r.title);
            url.setText(r.url);
            urlToImage.setText(r.urlToImage);
            publishedAt.setText(r.publishedAt);
        }
    }

    /* ======================================== */

    // 建立一個執行緒執行的事件取得網路資料
    // Android 有規定，連線網際網路的動作都不能再主線程做執行
    // 畢竟如果使用者連上網路結果等太久整個系統流程就卡死了
    private Runnable mutiThread = new Runnable(){
        public void run()
        {
            try {

                URL url = new URL("http://25.94.188.7/GetData.php"); // 25.94.188.7 // 192.168.43.88
                // 開始宣告 HTTP 連線需要的物件，這邊通常都是一綑的
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                // 建立 Google 比較挺的 HttpURLConnection 物件
                connection.setRequestMethod("POST");
                // 設定連線方式為 POST
                connection.setDoOutput(true); // 允許輸出
                connection.setDoInput(true); // 允許讀入
                connection.setUseCaches(false); // 不使用快取
                connection.connect(); // 開始連線

                int responseCode =
                        connection.getResponseCode();
                // 建立取得回應的物件
                if(responseCode ==
                    HttpURLConnection.HTTP_OK){
                // 如果 HTTP 回傳狀態是 OK ，而不是 Error
                InputStream inputStream =
                        connection.getInputStream();
                // 取得輸入串流
                BufferedReader bufReader = new BufferedReader(new InputStreamReader(inputStream, "utf-8"), 8);
                // 讀取輸入串流的資料
                String box = ""; // 宣告存放用字串
                String line = null; // 宣告讀取用的字串
                while((line = bufReader.readLine()) != null) {
                    box += line + "\n";
                    // 每當讀取出一列，就加到存放字串後面
                }
                inputStream.close(); // 關閉輸入串流
                result = box; // 把存放用字串放到全域變數
            }
            // 讀取輸入串流並存到字串的部分
            // 取得資料後想用不同的格式
            // 例如 Json 等等，都是在這一段做處理

            // parse json data

                try{
                    JSONArray jArray = new JSONArray(result);
                    for(int i = 0; i < jArray.length(); i++){
                    
                        //get our object, this is one person's worth of data
                        JSONObject json_data = jArray.getJSONObject(i);
                        
                        //create a new person
                        News resultRow = new News();
                        
                        //set that person's attributes
                        resultRow.title = json_data.getString("title");
                        resultRow.url = json_data.getString("url");
                        resultRow.urlToImage = json_data.getString("urlToImage");
                        resultRow.publishedAt = json_data.getString("publishedAt");
                        
                        //this is our arrayList object, we add our Person object to it
                        arrayOfWebData.add(resultRow);

                    }

                }
                catch(JSONException e){
                    Log.e("log_tag", "Error parsing data "+e.toString());
                }

            }
            catch(Exception e) {
                result = e.toString(); // 如果出事，回傳錯誤訊息
            }

            Log.e("執行完","Thread");
        }
    };

}

news_row

<?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/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#EE0000" />
    <TextView
        android:id="@+id/url"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#00EE00" />
    <TextView
        android:id="@+id/urlToImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#0000EE" />
    <TextView
        android:id="@+id/publishedAt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#FF00FF" />

</LinearLayout>