Java android sqlite-没有这样的文件，没有这样的列

我的问题如下：

它是写在控制台上的

[2013-02-24 14:30:40 - AdatBpro] Android Launch!
[2013-02-24 14:30:40 - AdatBpro] adb is running normally.
[2013-02-24 14:30:40 - AdatBpro] Performing hu.AB.example.adatbpro.MainActivity activity launch
[2013-02-24 14:30:40 - AdatBpro] Automatic Target Mode: Unable to detect device compatibility. Please select a target device.
[2013-02-24 14:30:47 - AdatBpro] Launch canceled!
[2013-02-24 14:31:04 - AdatBpro] emulator-5554 disconnected! Cancelling 'hu.AB.example.adatbpro.MainActivity activity launch'!
[2013-02-24 14:42:15 - AdatBpro] ------------------------------
[2013-02-24 14:42:15 - AdatBpro] Android Launch!
[2013-02-24 14:42:15 - AdatBpro] adb is running normally.
[2013-02-24 14:42:15 - AdatBpro] Performing hu.AB.example.adatbpro.MainActivity activity launch
[2013-02-24 14:42:16 - AdatBpro] Automatic Target Mode: launching new emulator with compatible AVD 'AVD412'
[2013-02-24 14:42:16 - AdatBpro] Launching a new emulator with Virtual Device 'AVD412'
[2013-02-24 14:42:16 - Emulator] WARNING: Data partition already in use. Changes will not persist!
[2013-02-24 14:42:16 - Emulator] WARNING: SD Card image already in use: C:\Users\Edit\.android\avd\AVD412.avd/sdcard.img
[2013-02-24 14:42:16 - Emulator] WARNING: Cache partition already in use. Changes will not persist!
[2013-02-24 14:42:16 - AdatBpro] New emulator found: emulator-5556
[2013-02-24 14:42:16 - AdatBpro] Waiting for HOME ('android.process.acore') to be launched...
[2013-02-24 14:43:32 - AdatBpro] HOME is up on device 'emulator-5556'
[2013-02-24 14:43:32 - AdatBpro] Uploading AdatBpro.apk onto device 'emulator-5556'
[2013-02-24 14:43:33 - AdatBpro] Installing AdatBpro.apk...
[2013-02-24 14:44:30 - AdatBpro] Success!

程序正在运行，数据库处于打开状态，但第一个仿真器什么也没写。 我再次尝试跑步。第一个仿真器在那里，打开第二个仿真器，并在第二个仿真器上编写所有内容

它只在emulator上制作

它不在电话上运行

为什么要这样做？我做错了什么

我找不到解决办法

公共类DbConstants{

public static final String DATABASE_NAME = "tar.db";
public static final int DATABASE_VERSION = 1;
public static String DATABASE_CREATE_ALL = Todo.DATABASE_CREATE;
public static String DATABASE_DROP_ALL = Todo.DATABASE_DROP;

public static class Todo {
    // public static final String DATABASE_NAME = "data.db";
    public static final String DATABASE_TABLE = "todo";
    public static final String KEY_ROWID = "_id";
    public static final String KEY_KI = "ki";


    public static final String DATABASE_CREATE = "create table if not exists "
            + DATABASE_TABLE
            + "("
            + KEY_ROWID
            + " integer primary key autoincrement, "
            + KEY_KI
            + " text );";  

    public static final String DATABASE_DROP = "drop table if exists"
            + DATABASE_TABLE + "; ";




    private long id;
    private String ki;




    public Todo(String aKi)
    {

        ki = aKi;

    }

    @Override
    public String toString() {
        return ki;
    }

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getKi() {
        return ki;
    }

    public void setKi(String ki) {
        this.ki = ki;
    }


}

}

公共类MainActivity扩展了ListActivity{

专用到ocursoradapter适配器

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
//  setContentView(R.layout.activity_main);

    TodoDbLoader dbLoader = new TodoDbLoader(getApplicationContext());
    dbLoader.open();
    Cursor c = dbLoader.fetchAll();


    if (c.getCount() == 0) {
        dbLoader.createTodo(new Todo("ÉN"));
        dbLoader.createTodo(new Todo("Sári"));
        dbLoader.createTodo(new Todo("Saci"));

        c = dbLoader.fetchAll();
    }
    c.moveToFirst();
    Adapter = new TodoCursorAdapter(getApplicationContext(), c);
    setListAdapter(Adapter);
}

}

公共类DatabaseHelper扩展了SQLiteOpenHelper{

public DatabaseHelper(Context context, String name){
    super(context, name, null, DbConstants.DATABASE_VERSION);
}

@Override
public void onCreate(SQLiteDatabase db) {
    // TODO Auto-generated method stub
    db.execSQL(DbConstants.DATABASE_CREATE_ALL);

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    // TODO Auto-generated method stub
    db.execSQL(DbConstants.DATABASE_DROP_ALL);
    db.execSQL(DbConstants.DATABASE_CREATE_ALL);
}

}

公共类TodoDbLoader{

private Context ctx;
private DatabaseHelper dbHelper;
private SQLiteDatabase mDb;

public TodoDbLoader(Context ctx){
    this.ctx= ctx;
}
public void open()throws SQLException{
    dbHelper = new  DatabaseHelper(ctx,DbConstants.DATABASE_NAME);
    mDb = dbHelper.getWritableDatabase();
    dbHelper.onCreate(mDb);
}

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

public long createTodo(Todo todo){
    ContentValues values = new ContentValues();
    values.put(DbConstants.Todo.KEY_KI, todo.getKi());


    return mDb.insert(DbConstants.Todo.DATABASE_TABLE, null, values);
}

public boolean deleteTodo(long rowId){

    return mDb.delete(
            DbConstants.Todo.DATABASE_TABLE,
            DbConstants.Todo.KEY_ROWID + "=" + rowId, null) > 
    0;
}

public boolean deleteAllTodo(){
    return mDb.delete(DbConstants.Todo.DATABASE_TABLE , null, null) > 0;
}

public boolean updateProduct(long rowId, Todo newTodo){
    ContentValues values = new ContentValues();

    values.put(DbConstants.Todo.KEY_KI, newTodo.getKi());

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

public Cursor fetchAll(){
    return mDb.query(DbConstants.Todo.DATABASE_TABLE, 
            new String[]{ DbConstants.Todo.KEY_ROWID,
            DbConstants.Todo.KEY_KI,
             }, null, null, null, null, DbConstants.Todo.KEY_KI);


}

public Todo fetchTodo(long rowId){
    Cursor c = mDb.query(DbConstants.Todo.DATABASE_TABLE, 
            new String[]{ DbConstants.Todo.KEY_ROWID,
            DbConstants.Todo.KEY_KI,
             },DbConstants.Todo.KEY_ROWID + "=" + rowId,
            null, null, null, DbConstants.Todo.KEY_KI);
    if (c.moveToFirst())
        return getTodoByCursor(c);
    return null;

}

public static Todo getTodoByCursor(Cursor c){
    return new Todo(                
            c.getString(c.getColumnIndex(DbConstants.Todo.KEY_KI)) 
            );
}

}

公共类TodoCursorAdapter扩展了CursorAdapter{

public TodoCursorAdapter(Context context, Cursor c){
    super(context, c, false);
}



@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {

    final LayoutInflater inflater = LayoutInflater.from(context);
    View row = inflater.inflate(R.layout.todorow, null);
    bindView(row, context, cursor);
    return row;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {

    TextView KiTV = (TextView) view.findViewById(R.id.textViewKi);

    Todo todo = TodoDbLoader.getTodoByCursor(cursor);

    KiTV.setText(todo.getKi());


}
@Override
public Todo getItem(int position) {
    getCursor().moveToPosition(position);

    return TodoDbLoader.getTodoByCursor(getCursor());
}

---

}

始终发布完整的堆栈跟踪或错误消息。根据错误消息判断，它找不到您的数据库！看起来您没有指定数据库的正确路径找到数据库很好。为什么什么都不写？