package org.androidtown.location;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import android.widget.EditText;

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

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


public class ParentActivity extends AppCompatActivity {


    Button button;
    EditText gpsinfo;
    EditText txt;
    phpDown task;
    ArrayList<ListItem> listItem = new ArrayList<ListItem>();
    ListItem Item;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_parent);
        task = new phpDown();
        gpsinfo = (EditText) findViewById(R.id.gpsinfo);
        txt = (EditText) findViewById(R.id.editText3);
        task.execute("http://gpsserver.iptime.org/load.php");
        Button button = (Button) findViewById(R.id.button6);
    } //oncreate

    public class ListItem {

private String[] mData;

        public ListItem(String[] data) {
mData = data;
        }

public ListItem(String txt1, String txt2) {
mData = new String[100];
            mData[0] = txt1;
            mData[1] = txt2;
        }

public String[] getData() {
return mData;
        }

public String getData(int index) {
return mData[index];
        }

public void setData(String[] data) {
mData = data;
        }
    }

private class phpDown extends AsyncTask<String, Integer, String> {


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

            StringBuilder jsonHtml = new StringBuilder();
            try {
// 연결 url 설정
                URL url = new URL(urls[0]);
                // 커넥션 객체 생성
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                // 연결되었으면.
                if (conn != null) {
                    conn.setConnectTimeout(10000);
                    conn.setUseCaches(false);
                    // 연결되었음 코드가 리턴되면.
                    if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                        BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
                        for (; ; ) {
// 웹상에 보여지는 텍스트를 라인단위로 읽어 저장.
                            String line = br.readLine();
                            if (line == null) break;
                            // 저장된 텍스트 라인을 jsonHtml에 붙여넣음
                            jsonHtml.append(line + "\n");
                        }
                        br.close();
                    }
                    conn.disconnect();
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
return jsonHtml.toString();

        }

protected void onPostExecute(final String str) {


//            gpsinfo.setText(str);


            String txt1;
            String txt2;
            try {

                JSONObject root = new JSONObject(str);
                JSONArray ja = root.getJSONArray("results");
                for (int i = 0; i < ja.length(); i++) {
                    JSONObject jo = ja.getJSONObject(i);
                    txt1 = jo.getString("Latitude");
                    txt2 = jo.getString("Longitude");
                    listItem.add(new ListItem(txt1, txt2));
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

gpsinfo.setText(listItem.get(0).getData(0) + "  " + listItem.get(0).getData(1));


        } //onPostExcute


    } //class main


} //Maii


doinBackground는 php에서 json형식으로 보내준 파일 읽어오는곳이고 onPostExecute 에서 레이아웃에 출력할수있게 짜진 코드인데요