ソース

Kitwi.java

これが画面表示を行うクラス

/*10/13　Kitwiに名前を変更。Tは発音しないでキウイ*/

package per.neet.kitwi;

import java.io.IOException;

import javax.xml.parsers.ParserConfigurationException;

import org.xml.sax.SAXException;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.view.View;

public class Kitwi extends Activity {
    /** Called when the activity is first created. */    
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        LinearLayout layout = new LinearLayout(this);
        layout.setOrientation(LinearLayout.VERTICAL);
        layout.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
        
        TextView message = new TextView(this);
        message.setText("パブリックタイムラインを取得します...");
        layout.addView(message);
        setContentView(layout);
        
        TextView tv = new TextView(this);
        try {
			String value = new String(TwitterApi.getPublicTimeline());
			Log.d("kitwi", "value of Kitwi.value is "+value);
			tv.setText(value);
			
		} catch (ParserConfigurationException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SAXException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        
        layout.addView(tv);
        setContentView(layout);
        
//        TextView[] tvArray = new TextView[5];
//        
//        for (int i = 0; tvArray.length > i; i++){
//        	Log.d("kitwi", "loop no."+i);
//        	tvArray[i] = new TextView(this);
//        	tvArray[i].setText("こんにちは世界！　no."+i);
//        	layout.addView(tvArray[i]);
//        }
//        setContentView(layout);
	}
}

XmlHandler.java

package per.neet.kitwi;

import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;

import android.util.Log;

public class XmlHandler extends DefaultHandler{

	//変数を用意する
	boolean			isName, isText, isCreated;
	StringBuffer	name	= new StringBuffer();
	StringBuffer	text	= new StringBuffer();
	StringBuffer	created	= new StringBuffer();
//	String[]		strArray = new String[20];	//公開タイムラインの一度の取得数は20
	int				i = 0;
	
	StringBuffer	strbuf = new StringBuffer();
	
	final static String tag = "kitwi";			//LogCat向けのタグ
	
	//文書の開始。フラグを初期化
	public void startDocument(){
//		strbuf = new StringBuffer();
	}
	
	//文書の終了
	public void endDocument(){/*何もしない*/}
	
	//要素の開始
	public void startElement(	String uri,
								String localName,		//ローカルネーム
								String qName,			//要素名
								Attributes attributes){	//属性
		
		//3要素のフラグを立てる
		if (localName == "name"){				//ID
			isName = true;
			Log.d(tag, "name flag: true");
//			name = new StringBuffer();
		}else if (localName == "text"){			//POST内容
			isText = true;
			Log.d(tag, "text flag: true");

//			text = new StringBuffer();
		}else if (localName == "created_at"){	//時間
			isCreated = true;
			Log.d(tag, "created flag: true");

//			created = new StringBuffer();
		}
	}
	
	//要素の終了
	public void endElement(	String uri,
							String localName,
							String qName){
		
//		Log.d(tag, "endElement: qName is "+localName);
		
		//3要素のフラグを倒す
		if (localName == "name"){				//ID
			isName = false;
			Log.d(tag, "endElement: localName is name");
		}else if (localName == "text"){			//POST内容
			isText = false;
			Log.d(tag, "endElement: localName is text");
		}else if (localName == "created_at"){	//時間
			isCreated = false;
			Log.d(tag, "endElement: localName is created");
		}else if (localName == "status"){
			Log.d(tag, "XmlHandler.strbuf.append("+name+" : "+text+" at "+created+")");
			strbuf.append(name+" : "+text+" at "+created+"\n");
			
			name.delete(0, name.length());
			text.delete(0, text.length());
			created.delete(0, created.length());
			
			//strArray[0]-[19]
//			if (i < 20){
//				strArray[i] = new String(name+" : "+text+" at "+created);
//				Log.d("kitwi", "strArray[i++] @XmlHandler:54");
//				i++;
//			}
		}
	}
	
	//文字列を扱う
	public void characters(char[] ch, int start, int length){
		if (length > 0){
			if (isName){
				Log.d(tag, "get chracters: "+new String(ch, start, length));
				name.append(ch, start, length);
				Log.d(tag, "characters.isName: "+name);
			}else if (isText){
				Log.d(tag, "get chracters: "+new String(ch, start, length));
				text.append(ch, start, length);
			}else if (isCreated){
				Log.d(tag, "get chracters: "+new String(ch, start, length));
				created.append(ch, start, length);
			}
		}
	}
	
	/*上で溜め込んだstatusの配列を吐き出すメソッド
	 * 自動的には実行されない*/
	public String out(){
		String string = new String(strbuf.toString());
		Log.d("kitwi", "value of string is "+string);
		return string;
	}
}

TwitterApi.java

package per.neet.kitwi;

import java.io.BufferedInputStream;
import java.io.IOException;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.xml.sax.SAXException;

import android.util.Log;

public class TwitterApi extends DefaultHttpClient{
	
	final static String base_uri	= "http://twitter.com/";	//Twitter API
	final static String debug_uri	= "http://10.0.2.2/";		//Emulatorから見たlocalhost
	final static String status_uri	= "statuses/";				//ステータス関連のAPIを示す
	final static String tag = "kitwi";
	
	public static String getPublicTimeline()
	throws ParserConfigurationException, SAXException, IOException{
		
		String uri = base_uri+status_uri+"public_timeline.xml";
		
		String statuses = new String(Getter(uri));
	
		return statuses;
	}
	
	//引数で受け取ったuriからGETしてレスポンスの本文部分のInputStreamをParseへ渡す。
	//帰ってきたString[]を戻り値とする。例外はStringの中で返す
	private static String Getter(String uri) 
	throws ParserConfigurationException, SAXException, ClientProtocolException, IOException{
		HttpClient client = new DefaultHttpClient();
		HttpGet		method = new HttpGet(uri);	//メソッド
				
		String statuses = null;
		BufferedInputStream contentStream = null;
		HttpResponse response = null;
		
		try {
			//clientでGetを実行。レスポンスからStatusLine->StatusCode（サーバーの応答の種類を示す）を取り出す
			//cf."6.1 Status-Line" http://www.ietf.org/rfc/rfc2616.txt
			response = client.execute(method);
			int statuscode = response.getStatusLine().getStatusCode();		//StatusCodeは数字なのでint
			
			//リクエストが成功
			if (statuscode == HttpStatus.SC_OK){	//「200 OK」かどうか
				contentStream = new BufferedInputStream(
						response.getEntity().getContent());
				statuses = new String(TwitterApi.Parse(contentStream));
			}
			else{
//				"サーバーエラー："+statuscode;
			}
		}catch (RuntimeException e) {
//			RuntimeErrorの時は接続AdortしろとApache様が仰せです
			method.abort();
			e.printStackTrace();
		}finally{
			try {
				//接続を解放する
				contentStream.close();
				Log.d(tag, "contentStream.close(): success!!");
			} catch (IOException e) {
//				接続解放に伴うエラー
				e.printStackTrace();
			}
		}
		return statuses;
	}
			
	
	
	//XMLパーサーを呼び出すクラス
	//closeはこの中ではやらない
	private static String Parse(BufferedInputStream in) 
	throws ParserConfigurationException, SAXException, IOException {
		
		SAXParserFactory spf
				=SAXParserFactory.newInstance();
		XmlHandler handl = new XmlHandler();
		SAXParser saxparser;
		
		saxparser = spf.newSAXParser();
		saxparser.parse(in, handl);
		
		return handl.out();
	}

	
}