Androidアプリ開発 Excelに書かれた株のリストのそれぞれの株価を取得して表示する

まずExcelファイルには、いくつかの株のコードが書かれています。以下のサンプルでは、Excelのファイルから株のコードを読み取り、それぞれの株について、インターネットのYahooのサイトから株価を取得して表示します。Excelから株コードを読み取るためにjexcelapi というライブラリを使用して、インターネットから株価を取得するためには、jsoup　というライブラリを使用しています。

source code

	<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	tools:context="${relativePackage}.${activityClass}" >
	<TextView
	android:id="@+id/textView2"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/hello_world" />
	<TextView
	android:id="@+id/textView1"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_alignParentLeft="true"
	android:layout_alignParentRight="true"
	android:layout_below="@+id/textView2"
	android:layout_marginTop="24dp"
	android:text="TextView" />
	</RelativeLayout>

view raw activity_main.xml hosted with ❤ by GitHub

	<?xml version="1.0" encoding="utf-8"?>
	<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.example.andexcelread"
	android:versionCode="1"
	android:versionName="1.0" >
	<uses-sdk
	android:minSdkVersion="8"
	android:targetSdkVersion="21" />
	<application
	android:allowBackup="true"
	android:icon="@drawable/ic_launcher"
	android:label="@string/app_name"
	android:theme="@style/AppTheme" >
	<activity
	android:name=".MainActivity"
	android:label="@string/app_name" >
	<intent-filter>
	<action android:name="android.intent.action.MAIN" />
	<category android:name="android.intent.category.LAUNCHER" />
	</intent-filter>
	</activity>
	</application>
	<uses-permission android:name="android.permission.INTERNET"></uses-permission>
	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
	<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
	</manifest>

view raw AndroidManifest.xml hosted with ❤ by GitHub

	import java.io.File;
	import java.io.IOException;
	import org.jsoup.Jsoup;
	import org.jsoup.nodes.Document;
	import org.jsoup.nodes.Element;
	import org.jsoup.select.Elements;
	import jxl.Cell;
	import jxl.Sheet;
	import jxl.Workbook;
	import jxl.WorkbookSettings;
	import jxl.read.biff.BiffException;
	import android.app.Activity;
	import android.os.AsyncTask;
	import android.os.Bundle;
	import android.os.Environment;
	import android.widget.TextView;
	public class MainActivity extends Activity {
	String dbStr = Environment.getExternalStorageDirectory() + "/dropbox/xls/stock1.xls";
	String strHyouji="";
	String[][] arrays = read();
	int line=0;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	if(arrays == null ){
	strHyouji = "failure in reading Excel file";
	}else{
	for (String[] array : arrays) {
	strHyouji = strHyouji + array[0];
	System.out.println();
	strHyouji = strHyouji + "\n";
	}
	}
	TextView textSetting = (TextView) findViewById(R.id.textView1);
	textSetting.setText(strHyouji);
	if(arrays != null){
	new MyTask().execute();
	}
	}
	private class MyTask extends AsyncTask<Void, Void, String> {
	@Override
	protected String doInBackground(Void... params) {
	String url = "http://stocks.finance.yahoo.co.jp/stocks/detail/?code=6954.T";
	String arg1 ="-----";
	String arg2 ="-----";
	String strKaeshi = "";
	for (String[] array : arrays) {
	try{
	url = "http://stocks.finance.yahoo.co.jp/stocks/detail/?code=" + array[0] + ".T";
	Document doc = Jsoup.connect(url).get();
	Elements stoksPrices=doc.select("td[class=stoksPrice]");
	Elements reals=doc.select("dd[class=yjSb real]");
	for (Element stoksPrice : stoksPrices){
	System.out.println(stoksPrice.text());
	arg2 =stoksPrice.text();
	System.out.println(arg2.replace(",",""));
	arg2=(arg2.replace(",",""));
	}
	for (Element real : reals){
	System.out.println(real.child(0).text());
	arg1 = real.child(0).text();
	}
	} catch (Exception e) {
	arg2=e.toString();
	}
	strKaeshi = strKaeshi + arg1 + " " + arg2 + "\n";
	arg1 ="-----";
	arg2 ="-----";
	}
	return strKaeshi;
	}
	@Override
	protected void onPostExecute(String result) {
	((TextView)findViewById (R.id.textView1)).setText(result);
	}
	}
	public String[][] read() {
	Workbook workbook = null;
	try {
	WorkbookSettings ws = new WorkbookSettings();
	ws.setGCDisabled(true);
	workbook = Workbook.getWorkbook(new File(dbStr), ws);
	Sheet sheet = workbook.getSheet(0);
	int rowCount = sheet.getRows();
	String[][] result = new String[rowCount][];
	for (int i = 0; i < rowCount; i++) {
	Cell[] row = sheet.getRow(i);
	result[i] = new String[row.length];
	for (int j = 0; j < row.length; j++) {
	result[i][j] = row[j].getContents();
	}
	}
	return result;
	} catch (BiffException e) {
	e.printStackTrace();
	} catch (IOException e) {
	e.printStackTrace();
	} finally {
	if (workbook != null) {
	workbook.close();
	}
	}
	return null;
	}
	}

view raw MainActivity.java hosted with ❤ by GitHub