Sqlite：没有这样的表

Question

你好，我是Android的新手，所以我按照教程使用sqlite。  我有两个表类别和收入，我这两个表（相同的功能）的处理方式相同，但我很惊讶结果与它们不一样，表Categories  工作正常，但对于Income，错误消息为SQLLiteLog (1) no such table: Income

这是我的数据库类

 public class CategoriesDAO  extends SQLiteOpenHelper {

    private static final int DATABASE_VERSION = 1;

    // Database Name
    private static final String DATABASE_NAME = "ischeduletable";

    // Contacts table name
    private static final String TABLE_CONTACTS = "Categories";
    private static final String TABLE_INCOME = "Income";

    // Contacts Table Columns names
    private static final String KEY_ID = "idcateg";
    private static final String KEY_NAME = "namecateg";
    // Income Table Columns names
    private static final String KEY_INCOME = "idincome";
    private static final String KEY_MONTHINCOME = "monthlyincome";
    private static final String KEY_ADDITIONINCOME = "additionalincome";
    private static final String KEY_CURRENCY = "currency";
    private static final String KEY_DATE = "month";

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




    public void onCreate(SQLiteDatabase db) {
        String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "("
                + KEY_ID + " INTEGER PRIMARY KEY," + KEY_NAME + " TEXT"+")";

        Log.v("taggg", "i'm on createe");
        Log.d("SSSSSSSSSS", "ON CREEEEEAAAAAATE");

         String CREATE_TABLE_Income = "CREATE TABLE " + TABLE_INCOME + "("
                    + KEY_INCOME + " INTEGER PRIMARY KEY," + KEY_MONTHINCOME + " FLOAT,"+ KEY_ADDITIONINCOME + " FLOAT," + KEY_CURRENCY + " INTEGER," + KEY_DATE+ " TEXT"+")";
        db.execSQL(CREATE_CONTACTS_TABLE);
        db.execSQL(CREATE_TABLE_Income);
    }

    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // Drop older table if existed
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS);
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_INCOME);

        // Create tables again
        onCreate(db);
    }

    public void addContact(CategorieCl categ) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(KEY_NAME, categ.getNamecateg()); // Contact Name

        // Inserting Row
        db.insert(TABLE_CONTACTS, null, values);
        db.close(); // Closing database connection
    }



public CategorieCl getCateg(int id) {
    SQLiteDatabase db = this.getReadableDatabase();

    Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_ID,
            KEY_NAME}, KEY_ID + "=?",
            new String[] { String.valueOf(id) }, null, null, null, null);
    if (cursor != null)
        cursor.moveToFirst();


            CategorieCl categ = new CategorieCl (Integer.parseInt(cursor.getString(0)),
                    cursor.getString(1));
    return categ;
}



public int updateContact(CategorieCl cat) {
    SQLiteDatabase db = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_NAME, cat.getNamecateg());

    // updating row
    return db.update(TABLE_CONTACTS, values, KEY_ID + " = ?",
            new String[] { String.valueOf(cat.getIdcateg()) });
}

public void deleteContact(CategorieCl cat) {
    SQLiteDatabase db = this.getWritableDatabase();
    db.delete(TABLE_CONTACTS, KEY_ID + " = ?",
            new String[] { String.valueOf(cat.getIdcateg()) });
    db.close();
}

//////////////////////////////INCOME DATABASEHELPER///////////////////////////////////////////////////////////////////////////////

public void addIncome(IncomeCL income) {
    SQLiteDatabase db = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_MONTHINCOME, income.getMonthlyincome());
    values.put(KEY_ADDITIONINCOME, income.getAdditionalincome());
    values.put(KEY_CURRENCY, income.getIdincome());
    values.put(KEY_DATE, ""+income.getMonth());
    // Inserting Row
    db.insert(TABLE_INCOME, null, values);
    db.close(); // Closing database connection
}



public IncomeCL getincome(int id) throws ParseException {
SQLiteDatabase db = this.getReadableDatabase();

Cursor cursor = db.query(TABLE_INCOME, new String[] { KEY_INCOME }, KEY_INCOME + "=?",
        new String[] { String.valueOf(id) }, null, null, null, null);
if (cursor != null)
    cursor.moveToFirst();

Date date = new SimpleDateFormat("ddMMyyyy").parse(cursor.getString(4));
        IncomeCL income = new  IncomeCL (Integer.parseInt(cursor.getString(0)),
                 Float.parseFloat(cursor.getString(1)), Float.parseFloat(cursor.getString(2)),Integer.parseInt(cursor.getString(3)),date);
return income;
}






}



}

这是我使用Sqlite

的课程

public class Income extends Activity {

    private EditText edittext;
    private EditText edittext2;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.income);
        CategoriesDAO dab = new  CategoriesDAO(this);
        addKeyListener();
        addKeyListener2();


        Log.d("MY TAGGG ", "START SHOWING DATABASE");


        Date dd = new Date();

        IncomeCL ini = new IncomeCL(0, 0, 1, dd);
        dab.addIncome(ini);
     try {
        for (int x=0;x< dab.getAllIncomes().size();x++)
           {
            Log.d("THIS IS THE ID", ""+dab.getAllIncomes().get(x).getIdincome()); 

           }
    } catch (ParseException e) {
        Log.d("MY TAGGG ", "ERROR LODINGDATABASE"); 
        e.printStackTrace();
    }
    }

如果有人告诉我该代码有什么问题，我将不胜感激！