android - 按下提交按钮时在列表视图中添加（附加）数据

Question

当我按下提交按钮时，notepadv3 类被调用以ui在列表视图中附加填充的项目，但是当我在 ui 中填充数据并按下提交时，第一次数据未显示在列表中，我按下模拟器然后再次提交列表中显示的数据所以它总是在列表视图中附加第一次旧的填充值....我想当我按下提交按钮时数据附加到列表视图中我得到的内容....有什么问题

我的notedbadapter.java代码是

package cabs.h;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class NotesDbAdapter {
public static final String KEY_TITLE = "title";
public static final String KEY_BODY = "body";
public static final String KEY_ROWID = "_id";

private static final String TAG = "NotesDbAdapter";
private DatabaseHelper mDbHelper;
private SQLiteDatabase mDb;

private static final String DATABASE_CREATE =
    "create table notes (_id integer primary key autoincrement, "
    + "title text not null, body text not null);";

private static final String DATABASE_NAME = "data";
private static final String DATABASE_TABLE = "notes";
private static final int DATABASE_VERSION = 2;

private final Context mCtx;

private static class DatabaseHelper extends SQLiteOpenHelper {

    DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {

        db.execSQL(DATABASE_CREATE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
                + newVersion + ", which will destroy all old data");
        db.execSQL("DROP TABLE IF EXISTS notes");
        onCreate(db);
    }
}

public NotesDbAdapter(Context ctx) {
    this.mCtx = ctx;
}

public NotesDbAdapter open() throws SQLException 
{
    mDbHelper = new DatabaseHelper(mCtx);
    mDb = mDbHelper.getWritableDatabase();
    return this;
}

public void close() {
    mDbHelper.close();
}

public long createNote(String title, String body) {
    ContentValues initialValues = new ContentValues();
    initialValues.put(KEY_TITLE, title);
    initialValues.put(KEY_BODY, body);
    return mDb.insert(DATABASE_TABLE, null, initialValues);
}

public boolean deleteNote(long rowId) {
    return mDb.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}

public Cursor fetchAllNotes() {
    return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE,
            KEY_BODY}, null, null, null, null, null);
}

public Cursor fetchNote(long rowId) throws SQLException 
{
    Cursor mCursor =
        mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
                KEY_TITLE, KEY_BODY}, KEY_ROWID + "=" + rowId, null,
                null, null, null, null);
    if (mCursor != null) {
        mCursor.moveToFirst();
    }
    return mCursor;
}

public boolean updateNote(long rowId, String title, String body) 
{
    ContentValues args = new ContentValues();
    args.put(KEY_TITLE, title);
    args.put(KEY_BODY, body);

    return mDb.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}
}

notepadv3.java 是

package cabs.h;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

import android.app.ListActivity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.AdapterView.AdapterContextMenuInfo;
public class Notepadv3 extends ListActivity {
    private static final int ACTIVITY_CREATE=0;
    private static final int ACTIVITY_EDIT=1;
    private static final int INSERT_ID = Menu.FIRST;
    private static final int DELETE_ID = Menu.FIRST + 1;
    private NotesDbAdapter mDbHelper;
    private Long mRowId;
   // static String ssssss;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listonruntime);
        mDbHelper = new NotesDbAdapter(this);
        mDbHelper.open();
        fillData();
        registerForContextMenu(getListView());

    }
    private void fillData() {
        Cursor notesCursor = mDbHelper.fetchAllNotes();
        startManagingCursor(notesCursor);
         String s=NotesDbAdapter.KEY_TITLE;
        Log.i("saurabh trivedi log cat,,,,,,,,,",s);
        final String PREFS_NAME1 = "PrefSettings";

        // Create an array to specify the fields we want to display in the list (only TITLE)
        String[] from = new String[]{NotesDbAdapter.KEY_BODY,NotesDbAdapter.KEY_TITLE};
      // String[] too = new String[]{NotesDbAdapter.KEY_TITLE};
        // and an array of the fields we want to bind those fields to (in this case just text1)
        int[] to = new int[]{R.id.toptext,R.id.middletext};

       SimpleCursorAdapter notes =   
                                    new SimpleCursorAdapter(this, R.layout.row, notesCursor, from, to);

    setListAdapter(notes);

    }

@Override
public void onCreateContextMenu(ContextMenu menu, View v,
        ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    menu.add(0, DELETE_ID, 0, R.string.menu_delete);
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    switch(item.getItemId()) {
        case DELETE_ID:
            AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
            mDbHelper.deleteNote(info.id);
            fillData();
            return true;
    }
    return super.onContextItemSelected(item);
}

  @Override
protected void onSaveInstanceState(Bundle outState) 
{
    super.onSaveInstanceState(outState);
    saveState();
    outState.putSerializable(NotesDbAdapter.KEY_ROWID, mRowId);
}

@Override
protected void onPause() {
    super.onPause();
    saveState();
}

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

}
//Activity2 activity=new Activity2();
//  String sssss=activity.resp1;
String sss = Activity2.getData();

// String sssss = cabbookingapplication.resp;
String city = cabbookingapplication.Selection;
String area = cabbookingapplication.Selection2;
String exactadd  = cabbookingapplication.Selection3;
String nearby = cabbookingapplication.Selection4;
private void saveState() {
   String title =("FROM LOC::"+ city+","+area+","+exactadd+","+nearby+"    "+sss);
    //String title =("FROM LOC::"+sss);
    //String title =("FROM LOC::"+respno);
      String body = ("TO LOC::"+city+area);
        if (mRowId == null) {
        long id = mDbHelper.createNote(title, body);
        if (id > 0) {
            mRowId = id;
        }
    } else {
        mDbHelper.updateNote(mRowId, title, body);
        }
    }

@Override
protected void onListItemClick(ListView l, View v, int position, long id)
{
    super.onListItemClick(l, v, position, id);
    Intent i = new Intent(this,FeedActivity.class);
   startActivity(i);
//   i.putExtra(NotesDbAdapter.KEY_ROWID, id);
 //  startActivityForResult(i, ACTIVITY_EDIT);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) 
{
    super.onActivityResult(requestCode, resultCode, intent);

    fillData();

}

}

提前致谢.....