<?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=".List_Main">

    <TextView
        android:id="@+id/tvString"
        android:layout_width="match_parent"
        android:layout_height="120dp"
        android:background="@drawable/bg"
        android:gravity="center"
        android:textColor="#ffffff"
        android:textSize="30sp"
        app:fontFamily="sans-serif-condensed-light" />
        
</LinearLayout>

public class MainActivity extends AppCompatActivity {
    private static String IP_ADDRESS = "PHP서버주소";
    private static String TAG = "그룹명";
    private static String filename = "파일명.php";
    private String mJsonString;
    private TextView tvString;
    
  	MainActivity.GetData task;

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

		tvString = (TextView) findViewById(R.id.tvString);

        //처음 시작될 때 AsyncTask 시작
        task = new GetData();
        task.execute("http://" + IP_ADDRESS + "/" + filename, "");

    }
   
   //PHP주소로부터 데이터를 받아오는 함수
   private class GetData extends AsyncTask<String, Void, String> {

        ProgressDialog progressDialog;
        String errorString = null;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            progressDialog = ProgressDialog.show(List_Main.this,
                    "Please Wait", null, true, true);
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            progressDialog.dismiss();
            Log.d(TAG, "response - " + result);

            mJsonString = result;
            showResult();

        }


        @Override
        protected String doInBackground(String... params) {

            String serverURL = params[0];
            String postParameters = params[1];


            try {

                URL url = new URL(serverURL);
                HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();


                httpURLConnection.setReadTimeout(5000);
                httpURLConnection.setConnectTimeout(5000);
                httpURLConnection.setRequestMethod("POST");
                httpURLConnection.setDoInput(true);
                httpURLConnection.connect();


                OutputStream outputStream = httpURLConnection.getOutputStream();
                outputStream.write(postParameters.getBytes("UTF-8"));
                outputStream.flush();
                outputStream.close();


                int responseStatusCode = httpURLConnection.getResponseCode();
                Log.d(TAG, "response code - " + responseStatusCode);

                InputStream inputStream;
                if (responseStatusCode == HttpURLConnection.HTTP_OK) {
                    inputStream = httpURLConnection.getInputStream();
                } else {
                    inputStream = httpURLConnection.getErrorStream();
                }


                InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "UTF-8");
                BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

                StringBuilder sb = new StringBuilder();
                String line;

                while ((line = bufferedReader.readLine()) != null) {
                    sb.append(line);
                }

                bufferedReader.close();

                return sb.toString().trim();


            } catch (Exception e) {

                Log.d(TAG, "GetData : Error ", e);
                errorString = e.toString();

                return null;
            }

        }
    }


    private void showResult() {

        String TAG_JSON = "그룹명";
        String TAG_INDEX_NO = "field1";
        String TAG_S_DATE = "field2";
        String TAG_STIME = "field3";
        String TAG_ETIME = "field4";
       
        try {
            JSONObject jsonObject = new JSONObject(mJsonString);
            JSONArray jsonArray = jsonObject.getJSONArray(TAG_JSON);


            LastInt = jsonArray.length();

            for (int i = 0; i < jsonArray.length(); i++) {

                JSONObject item = jsonArray.getJSONObject(i);

				mJsonString = item.getString(TAG_INDEX_NO) +", "+ item.getString(TAG_S_DATE)
                +", "+item.getString(TAG_STIME)+", "+item.getString(TAG_ETIME);

            }
			tvString.setText(mJsonString);

        } catch (JSONException e) {

            Log.d(TAG, "showResult : ", e);
        }


    }

<?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=".List_Main">

    <TextView
        android:id="@+id/btnHome"
        android:layout_width="match_parent"
        android:layout_height="120dp"
        android:background="@drawable/bg"
        android:gravity="center"
        android:textColor="#ffffff"
        android:textSize="30sp"
        app:fontFamily="sans-serif-condensed-light" />


    <View
        android:id="@+id/view4"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textView1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="NO"
            android:textColor="#E91E63"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="DATE"
            android:textColor="#E91E63"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView22"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="START"
            android:textColor="#E91E63"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView23"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="END"
            android:textColor="#E91E63"
            android:textSize="18sp" />

    </LinearLayout>

    <View
        android:id="@+id/view5"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />

    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
        android:id="@+id/swipe_layout"
        android:layout_width="match_parent"
        android:layout_height="450dp">

        <ListView
            android:id="@+id/listView_main_list"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical" />
    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

    <View
        android:id="@+id/view2"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="horizontal">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="샴푸"
            android:textColor="#000000"
            android:textSize="60dp" />

        <TextView
            android:id="@+id/textView7"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="트리트먼트"
            android:textColor="#000000"
            android:textSize="60dp" />

        <TextView
            android:id="@+id/textView8"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="바디워시"
            android:textColor="#000000"
            android:textSize="60dp" />
    </LinearLayout>

    <View
        android:id="@+id/view"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="3"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/tvSam"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="90dp" />

        <TextView
            android:id="@+id/tvTri"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="90dp" />

        <TextView
            android:id="@+id/tvBod"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="90dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btnReSam"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#000000"
            android:text="리필"
            android:textColor="#ffffff" />

        <Button
            android:id="@+id/btnReTri"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#000000"
            android:text="리필"
            android:textColor="#ffffff" />

        <Button
            android:id="@+id/btnReBod"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#000000"
            android:text="리필"
            android:textColor="#ffffff" />
    </LinearLayout>

</LinearLayout>

public class List_Main extends AppCompatActivity {

    private SwipeRefreshLayout mSwipeRefreshLayout;

    private ListAdapter adapter;
    private ListView listView;
    private String result_data;

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

        listView = (ListView) findViewById(R.id.listView_main_list);

        mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_layout);
        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {


                mSwipeRefreshLayout.setRefreshing(false);
            }
        });
    }

    public void setList(){
        for (int i = 0; i < jsonArray.length(); i++) {
					//데이터 가져와 PersonalData라는 Class의 생성자를 통해 변수에 데이터를 넣는다. 한번에 데이터를 전달달하
                    PersonalData personalData = new PersonalData();
                    personalData.setIndex_no(i + 1 + "");
                    personalData.setS_date(s_date);
                    personalData.setStime(stime);
                    personalData.setEtime(etime);
					//데이터 어뎁터에 추가
                    adapter.addItem(personalData);
              		}
            //리스트뷰에 어뎁터 적용
    		listView.setAdapter((android.widget.ListAdapter) adapter);
    }
    
}

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

    android:gravity="center"
    android:orientation="vertical">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textView_list_id"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView_list_date"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView_list_stime"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView_list_etime"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

    </LinearLayout>
<!--
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textView3"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="SHAMPOO"
            android:textColor="#E91E63"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="RINSE"
            android:textColor="#E91E63"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"

            android:gravity="center"
            android:text="BODY"
            android:textColor="#E91E63"
            android:textSize="18sp" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/textView_list_one"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView_list_two"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/textView_list_tree"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:textColor="#000000"
            android:textSize="18sp" />

    </LinearLayout>
!-->
</LinearLayout>

package kr.ac.jj.hackathon113app;


import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;


import java.util.ArrayList;

public class ListAdapter extends BaseAdapter {

    private ArrayList<PersonalData> listCustom = new ArrayList<>();

    // ListView에 보여질 Item 수
    @Override
    public int getCount() {
        return listCustom.size();
    }

    // 하나의 Item(ImageView 1, TextView 2)
    @Override
    public Object getItem(int position) {
        return listCustom.get(position);
    }

    // Item의 id : Item을 구별하기 위한 것으로 position 사용
    @Override
    public long getItemId(int position) {
        return position;
    }

    // 실제로 Item이 보여지는 부분
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        CustomViewHolder holder = new CustomViewHolder();
        if (convertView == null) {
            convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_list_data, null, false);
			//layout.item_list_data.xml에 있는 텍스트뷰 변수로 연결
            holder.Index_no = (TextView) convertView.findViewById(R.id.textView_list_id);
            holder.s_date = (TextView) convertView.findViewById(R.id.textView_list_date);
            holder.s_stime = (TextView) convertView.findViewById(R.id.textView_list_stime);
            holder.e_stime = (TextView) convertView.findViewById(R.id.textView_list_etime);
            convertView.setTag(holder);
            
        } else {
            holder = (CustomViewHolder) convertView.getTag();
        }
		//PersonalData 생성자 불러 변수에 추가
        PersonalData dto = listCustom.get(position);
        holder.Index_no.setText(dto.getIndex_no());
        holder.s_date.setText(dto.getS_date());
        holder.s_stime.setText(dto.getStime());
        holder.e_stime.setText(dto.getStime());

        return convertView;
    }

    class CustomViewHolder {
    	//텍스트뷰 변수선언
        TextView Index_no;
        TextView s_date;
        TextView s_stime;
        TextView e_stime;

    }

    // MainActivity에서 Adapter에있는 ArrayList에 data를 추가시켜주는 함수
    public void addItem(PersonalData dto) {
        listCustom.add(dto);
    }
}

public class PersonalData {
    private String index_no;
    private String s_date;
    private String stime;
    private String etime;


    public PersonalData(String index_no, String s_date, String stime, String etime) {
        this.index_no = index_no;
        this.s_date = s_date;
        this.stime = stime;
        this.etime = etime;
    }

    public PersonalData() {

    }

    public String getEtime() {
        return etime;
    }

    public void setEtime(String etime) {
        this.etime = etime;
    }

    public String getIndex_no() {
        return index_no;
    }

    public void setIndex_no(String index_no) {
        this.index_no = index_no;
    }

    public String getS_date() {
        return s_date;
    }

    public void setS_date(String s_date) {
        this.s_date = s_date;
    }


    public String getStime() {
        return stime;
    }

    public void setStime(String stime) {
        this.stime = stime;
    }

}