Android - sqlite.SQLiteException：いいえそのような列：_id

Question

私のSQLiteデータベースのバージョンを変更しようとしました。私はこの権利をしているとは思わない。私のfetchAllMedsメソッドは、一貫していない_id列のためにエラーを投げています。私のupdateDataは自分のSQLiteを更新しているはずです。私は何かが足りないと思う。ここで

public class DBAdapter { 
public static final String ROW_ID ="_id"; 
public static final String KEY_DRUGNAME = "drugname"; 
public static final String KEY_DOSE = "dose"; 
public static final String KEY_FREQUENCY = "frequency"; 
public static final String KEY_ROUTE = "route"; 
public static final String KEY_REFILLDATE = "refilldate"; 
public static final String KEY_EXPIRATIONDATE = "expirationdate"; 

private static final String DATABASE_NAME = "MymedlistDB"; 
private static final String DATABASE_TABLE = "mymedlist"; 
private static final int DATABASE_VERSION = 2; 

private static final String TAG = "MedDBAdapter"; 
private DatabaseHelper mDatabaseHelper; 
private SQLiteDatabase mDb; 

private final Context mCtx; 

private static final String DATABASE_CREATE = 
     "CREATE TABLE if not exists " + DATABASE_TABLE + " (" + 
       ROW_ID + "_id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL," + 
       KEY_DRUGNAME + "," + 
       KEY_DOSE + "," + 
       KEY_FREQUENCY + "," + 
       KEY_ROUTE + "," + 
       KEY_REFILLDATE + "," + 
       KEY_EXPIRATIONDATE + ")"; 



private static class DatabaseHelper extends SQLiteOpenHelper { 
    public DatabaseHelper(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 
     Log.w(TAG, DATABASE_CREATE); 
     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 " + DATABASE_TABLE); 
     onCreate(db); 
    } 
} 

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

public DBAdapter open() throws SQLException{ 
    mDatabaseHelper = new DatabaseHelper(mCtx); 
    mDb = mDatabaseHelper.getWritableDatabase(); 
    return this; 
} 
public void close(){ 
    if (mDatabaseHelper != null){ 
     mDatabaseHelper.close(); 
    } 
} 
public long createMed(String drugname, String dose, String frequency, 
         String route, String refilldate, String expirationdate){ 

    ContentValues initialValues = new ContentValues(); 
    initialValues.put(KEY_DRUGNAME, drugname); 
    initialValues.put(KEY_DOSE, dose); 
    initialValues.put(KEY_FREQUENCY, frequency); 
    initialValues.put(KEY_ROUTE, route); 
    initialValues.put(KEY_REFILLDATE, refilldate); 
    initialValues.put(KEY_EXPIRATIONDATE, expirationdate); 

    return mDb.insert(DATABASE_TABLE, null, initialValues); 
} 

public int updateData(String drugname, String dose, String frequency, 
         String route, String refilldate, String expirationdate){ 
    ContentValues medsUpdate = new ContentValues(); 
    medsUpdate.put(DBAdapter.KEY_DRUGNAME,drugname); 
    medsUpdate.put(DBAdapter.KEY_DOSE,dose); 
    medsUpdate.put(DBAdapter.KEY_FREQUENCY,frequency); 
    medsUpdate.put(DBAdapter.KEY_ROUTE,route); 
    medsUpdate.put(DBAdapter.KEY_REFILLDATE,refilldate); 
    medsUpdate.put(DBAdapter.KEY_EXPIRATIONDATE,expirationdate); 
    int i = mDb.update(DBAdapter.DATABASE_TABLE, medsUpdate, DBAdapter.ROW_ID, null); 
    return i; 

} 

public Cursor fetchAllMeds(){ 
    String[] columns = new String[] {ROW_ID,KEY_DRUGNAME, KEY_DOSE, KEY_FREQUENCY, KEY_ROUTE, KEY_REFILLDATE, KEY_EXPIRATIONDATE}; 
    Cursor mCursor = mDb.query(DATABASE_TABLE,columns,ROW_ID, null, null, null, null, null); 

    if (mCursor != null){ 
     mCursor.moveToFirst(); 
    } 
    return mCursor; 
} 
} 

は私MedMainActivityの私のfetchAllMed一部です：

Cursor cursor = dbcon.fetchAllMeds(); 
    String[] from = new String[]{DBAdapter.ROW_ID, DBAdapter.KEY_DRUGNAME, DBAdapter.KEY_DOSE, DBAdapter.KEY_FREQUENCY, DBAdapter.KEY_ROUTE, DBAdapter.KEY_REFILLDATE 
      , DBAdapter.KEY_EXPIRATIONDATE}; 
    int[] to = new int[]{R.id._id, R.id.drugName3, R.id.dose3, R.id.frequency3, R.id.route3, R.id.refillDate3, R.id.expirationDate3}; 

Answer 1

してください代わりに

ROW_ID + "_id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL," + 

の `

ROW_ID + " INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL," +