需要为EditText框保存状态。请帮忙！

package tryone.now.forfreenow;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;

public class notepad extends Activity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        editBox = (EditText) findViewById(R.id.editText1);
        editBox2 = (EditText) findViewById(R.id.editText2);
    }

    protected void onResume() {
        super.onResume();

        SharedPreferences prefs = getPreferences(0);
        String restoredText = prefs.getString(\"text\", null);
        if (restoredText != null)
        {
            editBox.setText(restoredText, TextView.BufferType.EDITABLE);

            int selectionStart = prefs.getInt(\"selection-start\", -1);
            int selectionEnd = prefs.getInt(\"selection-end\", -1);
            if (selectionStart != -1 && selectionEnd != -1)
            {
                editBox.setSelection(selectionStart, selectionEnd);
            }
            SharedPreferences prefs2 = getPreferences(1);
            String restoredText2 = prefs2.getString(\"text2\", null);
            if (restoredText2 != null)
            {
                editBox2.setText(restoredText2, TextView.BufferType.EDITABLE);

                int selectionStart2 = prefs2.getInt(\"selection-start2\", -1);
                int selectionEnd2 = prefs2.getInt(\"selection-end2\", -1);
                if (selectionStart2 != -1 && selectionEnd2 != -1)
                {
                    editBox2.setSelection(selectionStart2, selectionEnd2);
                }
            }
        }
    }

    protected void onPause() {
        super.onPause();

        SharedPreferences.Editor editor = getPreferences(0).edit();
        editor.putString(\"text\", editBox.getText().toString());
        editor.putInt(\"selection-start\", editBox.getSelectionStart());
        editor.putInt(\"selection-end\", editBox.getSelectionEnd());
        editor.commit();

        SharedPreferences.Editor editor2 = getPreferences(1).edit();
        editor2.putString(\"text2\", editBox2.getText().toString());
        editor2.putInt(\"selection-start2\", editBox2.getSelectionStart());
        editor2.putInt(\"selection-end2\", editBox2.getSelectionEnd());
        editor2.commit();
    }

    private EditText editBox;
    private EditText editBox2;
}