Android HttpClient, Seoul OpenAPI example

안드로이드에서 HttpClient를 이용하여 서울시 OpenAPI에 접속하여 데이터를 가져오는 예

서울시 OpenAPI 사용법과 개발자 인증코드를 신청하고 얻는 절차는 여기를 참조하세요

안드로이드에서 URLConnection 클래스를 이용하여 서울시 OpenAPI에 접속하여 정보를 가져오는 예제는 여기를 참조하세요

res/layout/main.xml

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

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="분실물 검색" />
</LinearLayout>

AndroidManifest.xml 파일 설정 <uses-permission android:name="android.permission.INTERNET"/>

MainActivity.java

package com.example.androidapp;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;

import android.app.*;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.*;
import android.util.*;
import android.widget.*;

public class MainActivity extends Activity {
	String auth_code = "개발자 인증 코드";

	TextView tv;
	Handler handler = new Handler();
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tv = (TextView) findViewById(R.id.textView1);

        new Thread() {
        	public void run() {
        		connect();
        	}
        }.start();
    }
    
    StringBuilder strBuilder = new StringBuilder();
    private void connect() {
    	try{
    		String service = URLEncoder.encode("보관 분실물 검색", "UTF-8");
    		String item = URLEncoder.encode("지갑", "UTF-8");
    		String strUrl = "http://openapi.seoul.go.kr:8088/xml/"+
    					auth_code+"/"+service+"/1/5/"+item+"/b1/";
    		HttpClient httpClient = new DefaultHttpClient();
    		HttpGet httpGet = new HttpGet(strUrl);
    		HttpResponse response = httpClient.execute(httpGet);
    		
    		InputStream is = response.getEntity().getContent();
		InputStreamReader isr = new InputStreamReader(is, "UTF-8");
		BufferedReader br = new BufferedReader(isr);
		String line = null;
		while((line=br.readLine())!=null) {
		    strBuilder.append(line+"\n");
		}

    		handler.post(new Runnable() {
    		    public void run() {
    			tv.setText(strBuilder.toString());
    		    }
    		});
    	}catch(Exception ex) {
    		ex.printStackTrace();
    		Log.e("접속오류", ex.toString());
    	}
    }

}

위와같이 받아온 XML 데이터를 XmlPullParser 등의 클래스를 이용하여 가공한 후에 화면에 출력하면 된다