●プログラム・リスト●

package jp.tuyano;


import java.io.*;


import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.text.Editable;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.*;

public class SampleApp extends Activity {
    private Activity me;
    private EditText edit;
    
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        edit = (EditText)this.findViewById(R.id.edit);
        Button load = (Button)this.findViewById(R.id.load);
        load.setOnClickListener(new MyLoadAdapter());
        Button save = (Button)this.findViewById(R.id.save);
        save.setOnClickListener(new MySaveAdapter());
    }
    
    // イベントクラス
    class MyLoadAdapter implements OnClickListener {


        @Override
        public void onClick(View v) {
            try {
                loadText();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    // イベントクラス
    class MySaveAdapter implements OnClickListener {


        @Override
        public void onClick(View v) {
            Editable s = edit.getText();
            try {
                saveText(s.toString());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    
    // テキストの保存
    public void saveText(String data) throws IOException{
        String path = "data.txt";
        FileOutputStream output = this.openFileOutput(path, Context.MODE_WORLD_READABLE);
        output.write(data.getBytes());
        output.close();
    }
    // テキストの読込
    public void loadText() throws IOException{
        String path = "data.txt";
        FileInputStream input = this.openFileInput(path);
        byte[] buffer = new byte[1000];
        input.read(buffer);
        String s = new String(buffer).trim();
        edit.setText(s);
        input.close();
    }
}