공공데이터(data.go.kr)에서 전주시내버스 승강장 정보 가져오기

Posted on: 2021년 08월 01일 2021년 08월 01일
Categories: 강의자료, 안드로이드

http://www.data.go.kr 에 가입
1. [전라북도 전주시_승강장 정보 서비스] 활용 신청 -> 신청 1일 후부터 사용 가능, 일반 인증키 번호 받음
2. 참고문서(IROS_SS_ID_DV_0501_OpenAPI활용가이드_전주시버스정보시스템_승강장정보서비스__v1.2)를 참조하여 프로그래밍
3. 승강장정보 검색 결과 : 승강장명으로 검색
MyConst.java 에 일반 인증키 번호 추가

public class MyConst { public static final String DATA_POST_KEY = "data.go.kr에 받은 인증키 번호"; }

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public class MyConst {
public static final String DATA_POST_KEY = "data.go.kr에 받은 인증키 번호";
}

Traffic 허용해주기 위해 /res/xml/network_security_config.xml 파일 생성

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <domain-config cleartextTrafficPermitted="true">
        <domain includeSubdomains="true">openapi.jeonju.go.kr</domain>
    </domain-config>
</network-security-config>

<?xml version="1.0" encoding="utf-8"?>

<network-security-config>

<domain-config cleartextTrafficPermitted="true">

<domain includeSubdomains="true">openapi.jeonju.go.kr</domain>

</domain-config>

</network-security-config>

AndroidManifest.xml 에 위 xml 파일 등록

AdnroidManifest.xml 에 인터넷 사용 가능하도록 추가

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="kr.co.moak.proj001address">

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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="kr.co.moak.proj001address">

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

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

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<activity

android:name=".MainActivity"

android:label="@string/app_name"

android:theme="@style/AppTheme.NoActionBar">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

/layout/activity_main.xml 수정

<?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:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/b1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="+" />

    <Button
        android:id="@+id/b2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="-" />

    <ListView
        android:id="@+id/lstView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

<?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:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<Button

android:id="@+id/b1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="+" />

<Button

android:id="@+id/b2"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="-" />

<ListView

android:id="@+id/lstView"

android:layout_width="match_parent"

android:layout_height="match_parent"/>

</LinearLayout>

MainActivity 클래스 수정 1 : AsyncTask 클래스 사용하여 인터넷에서 자료 다운로드

package kr.co.moak.aithird;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import java.net.URL;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

public class MainActivity extends AppCompatActivity {

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

        Button b1 = (Button)this.findViewById(R.id.b1);

        b1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String apiKey = MyConst.API_KEY;
                String searchFld = "stopnm";
                String searchNm = "전주대";

                // 승강장명 목록 조회
                String   url = "http://openapi.jeonju.go.kr/jeonjubus/openApi/traffic/bus_location2_stopnm_common.do"
                    + "?ServiceKey=" + apiKey + "&searchFld=stopnm&searchNm=" + searchNm;

                new MyAsyncTask(getBaseContext()).execute(url);
            }
        });

    }

    class MyAsyncTask extends AsyncTask<String, Integer, Document>{

        private Context m_context;

        public MyAsyncTask(Context context){
            this.m_context = context;
        }

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

        @Override
        protected Document doInBackground(String... urls) {
            URL url;
            Document doc = null;
            try{
                url = new URL(urls[0]);
                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
                DocumentBuilder db = dbf.newDocumentBuilder();
                doc = db.parse(new InputSource(url.openStream()));
                doc.getDocumentElement().normalize();
            }catch (Exception e){
                Log.v("MYTAG", "Parsing Error");
            }

            Log.v("MYTAG", urls[0]);

            return doc;
        }

        @Override
        protected void onPostExecute(Document doc) {
            NodeList nodeList = doc.getElementsByTagName("list");
            Log.v("MYTAG", "cnt: " + nodeList.getLength());
            for(int i = 0; i<nodeList.getLength(); i++) {
                NodeList childList = nodeList.item(i).getChildNodes();
                for(int j=0; j<childList.getLength(); j++){
                    Log.v("MYTAG", childList.item(j).getNodeName() + " "+ childList.item(j).getTextContent());
                }
            }
            //super.onPostExecute(document);
        }
    }
}

package kr.co.moak.aithird;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import org.w3c.dom.Document;

import org.w3c.dom.NodeList;

import org.xml.sax.InputSource;

import java.net.URL;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button b1 = (Button)this.findViewById(R.id.b1);

b1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

String apiKey = MyConst.API_KEY;

String searchFld = "stopnm";

String searchNm = "전주대";

// 승강장명 목록 조회

String url = "http://openapi.jeonju.go.kr/jeonjubus/openApi/traffic/bus_location2_stopnm_common.do"

+ "?ServiceKey=" + apiKey + "&searchFld=stopnm&searchNm=" + searchNm;

new MyAsyncTask(getBaseContext()).execute(url);

}

});

}

class MyAsyncTask extends AsyncTask<String, Integer, Document>{

private Context m_context;

public MyAsyncTask(Context context){

this.m_context = context;

}

@Override

protected void onPreExecute() {

super.onPreExecute();

}

@Override

protected Document doInBackground(String... urls) {

URL url;

Document doc = null;

try{

url = new URL(urls[0]);

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

DocumentBuilder db = dbf.newDocumentBuilder();

doc = db.parse(new InputSource(url.openStream()));

doc.getDocumentElement().normalize();

}catch (Exception e){

Log.v("MYTAG", "Parsing Error");

}

Log.v("MYTAG", urls[0]);

return doc;

}

@Override

protected void onPostExecute(Document doc) {

NodeList nodeList = doc.getElementsByTagName("list");

Log.v("MYTAG", "cnt: " + nodeList.getLength());

for(int i = 0; i<nodeList.getLength(); i++) {

NodeList childList = nodeList.item(i).getChildNodes();

for(int j=0; j<childList.getLength(); j++){

Log.v("MYTAG", childList.item(j).getNodeName() + " "+ childList.item(j).getTextContent());

}

//super.onPostExecute(document);

}

<String, Integer, Document> : Document doInBackground(String)
1. 첫번째 String : doInBackground()에서 받는 매개변수 타입
2. 두번째 Integer : onProgressUpdate()에서 사용할 변수 타입
3. 세번째 Document : doInBackground()의 리턴 타입
onPreExecute() : 백그라운드 작업을 수행하기 전에 호출
onProgressUpdate() :
1. 백그라운드 작업의 진행 상태를 표시하기 위해 호출
2. 작업 수행 중간 중간에 UI 객체에 접근하는 경우에 사용
3. 작업 중간에 publishProgress()를 호출하면 실행 됨
doInBackground() :
1. 새로 만든 스레드에서 백그라운드 작업을 수행
2. excute(인수1, 인수2,…)의 인수들을 배열로 전달받음
  1. new MyAsyncTask(getContext()).execute(url);
  2. strUrl을 urls[0]로 받음
onPostExecute()
1. 백그라운드 작업이 끝난 후 호출
2. 메인 스레드에서 실행되며 전송받은 내용을 레이아웃에 나타내거나 DB에 저장 등의 작업을 수행

/layout/stop_list_item.xml 파일 생성

<?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/stopkname"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView" />

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

        <TextView
            android:id="@+id/stopx"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="TextView" />

        <TextView
            android:id="@+id/stopy"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="TextView" />
    </LinearLayout>

</LinearLayout>

<?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/stopkname"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="TextView" />

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal">

<TextView

android:id="@+id/stopx"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="TextView" />

<TextView

android:id="@+id/stopy"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="TextView" />

</LinearLayout>

StopAdapter 클래스 생성(StopAdapter.java)

package kr.co.moak.aithird;

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

import java.util.ArrayList;
import java.util.HashMap;

public class StopAdapter extends BaseAdapter {
    Context context;
    ArrayList<HashMap<String, String>> arList;
    LayoutInflater mInflater;

    public StopAdapter(Context context, ArrayList<HashMap<String, String>> arList){
        this.context = context;
        this.arList = arList;

        mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getCount() {
        return arList.size();
    }

    @Override
    public Object getItem(int i) {
        return arList.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        View row = mInflater.inflate(R.layout.stop_list_item, viewGroup, false);

        final String stopkname = arList.get(i).get("stopkname");
        ((TextView) row.findViewById(R.id.stopkname)).setText(stopkname);

        final String stopx = arList.get(i).get("stopx");
        ((TextView) row.findViewById(R.id.stopx)).setText(stopx);

        final String stopy = arList.get(i).get("stopy");
        ((TextView) row.findViewById(R.id.stopy)).setText(stopy);

        return row;
    }
}

package kr.co.moak.aithird;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;

import java.util.ArrayList;

import java.util.HashMap;

public class StopAdapter extends BaseAdapter {

Context context;

ArrayList<HashMap<String, String>> arList;

LayoutInflater mInflater;

public StopAdapter(Context context, ArrayList<HashMap<String, String>> arList){

this.context = context;

this.arList = arList;

mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

}

@Override

public int getCount() {

return arList.size();

}

@Override

public Object getItem(int i) {

return arList.get(i);

}

@Override

public long getItemId(int i) {

return i;

}

@Override

public View getView(int i, View view, ViewGroup viewGroup) {

View row = mInflater.inflate(R.layout.stop_list_item, viewGroup, false);

final String stopkname = arList.get(i).get("stopkname");

((TextView) row.findViewById(R.id.stopkname)).setText(stopkname);

final String stopx = arList.get(i).get("stopx");

((TextView) row.findViewById(R.id.stopx)).setText(stopx);

final String stopy = arList.get(i).get("stopy");

((TextView) row.findViewById(R.id.stopy)).setText(stopy);

return row;

}

MainActivity 클래스 수정 : 멤버 필드로 ArrayList와 Adapter 추가

MainActivity 클래스 수정 : onCreate() 함수에 ListView 추가

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

        Button b1 = (Button)this.findViewById(R.id.b1);

        b1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String apiKey = MyConst.API_KEY;
                String searchFld = "stopnm";
                String searchNm = "전주대";

                // 승강장명 목록 조회
                String   url = "http://openapi.jeonju.go.kr/jeonjubus/openApi/traffic/bus_location2_stopnm_common.do"
                    + "?ServiceKey=" + apiKey + "&searchFld=stopnm&searchNm=" + searchNm;

                new MyAsyncTask(getBaseContext()).execute(url);
            }

        });

        ListView lstView = (ListView)this.findViewById(R.id.lstView);
        m_arList = new ArrayList<>();
        m_adapter = new StopAdapter(this.getApplicationContext(), m_arList);
        lstView.setAdapter(m_adapter);

        lstView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                Toast.makeText(getApplicationContext(), m_arList.get(i).get("stopkname"), Toast.LENGTH_SHORT).show();
            }
        });
    }

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button b1 = (Button)this.findViewById(R.id.b1);

b1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

String apiKey = MyConst.API_KEY;

String searchFld = "stopnm";

String searchNm = "전주대";

// 승강장명 목록 조회

String url = "http://openapi.jeonju.go.kr/jeonjubus/openApi/traffic/bus_location2_stopnm_common.do"

+ "?ServiceKey=" + apiKey + "&searchFld=stopnm&searchNm=" + searchNm;

new MyAsyncTask(getBaseContext()).execute(url);

}

});

ListView lstView = (ListView)this.findViewById(R.id.lstView);

m_arList = new ArrayList<>();

m_adapter = new StopAdapter(this.getApplicationContext(), m_arList);

lstView.setAdapter(m_adapter);

lstView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

Toast.makeText(getApplicationContext(), m_arList.get(i).get("stopkname"), Toast.LENGTH_SHORT).show();

}

});

}

MainActivity 클래스 수정 3 : onPostExecute() 함수 수정하여 다운로드 된 값을 ArrayList에 저장

        @Override
        protected void onPostExecute(Document doc) {
            m_arList.clear();

            NodeList nodeList = doc.getElementsByTagName("list");
            Log.v("MYTAG", "cnt: " + nodeList.getLength());
            for(int i = 0; i<nodeList.getLength(); i++) {
                HashMap<String, String> hash = new HashMap<>();

                NodeList childList = nodeList.item(i).getChildNodes();
                for(int j=0; j<childList.getLength(); j++){
                    hash.put(childList.item(j).getNodeName().toLowerCase(), childList.item(j).getTextContent());
                    Log.v("MYTAG", childList.item(j).getNodeName().toLowerCase() + " "+ childList.item(j).getTextContent());
                }
                m_arList.add(hash);
            }

            m_adapter.notifyDataSetChanged();
        }

@Override

protected void onPostExecute(Document doc) {

m_arList.clear();

NodeList nodeList = doc.getElementsByTagName("list");

Log.v("MYTAG", "cnt: " + nodeList.getLength());

for(int i = 0; i<nodeList.getLength(); i++) {

HashMap<String, String> hash = new HashMap<>();

NodeList childList = nodeList.item(i).getChildNodes();

for(int j=0; j<childList.getLength(); j++){

hash.put(childList.item(j).getNodeName().toLowerCase(), childList.item(j).getTextContent());

Log.v("MYTAG", childList.item(j).getNodeName().toLowerCase() + " "+ childList.item(j).getTextContent());

}

m_arList.add(hash);

}

m_adapter.notifyDataSetChanged();

}

whan0623

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