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Start your free trialBen Wong
19,426 PointsWe are going to release a new version that allows users to select a home planet as well. Migrating a SQLite Database.
Need help! Stuck:(
public class AlienSQLiteHelper extends SQLiteOpenHelper {
public static final String DB_NAME = "aliens.db"; public static final int DB_VERSION = 1;
public static final String ALIENS_TABLE = "ALIENS"; public static final String COLUMN_NAME = "NAME"; public static final String COLUMN_TYPE = "TYPE";
public static final String CREATE_ALIENS = "CREATE TABLE " + ALIENS_TABLE + " (" + "_id INTEGER PRIMARY KEY AUTOINCREMENT," + COLUMN_NAME + " TEXT, " + COLUMN_TYPE + " TEXT)";
public static final String DB_ALTER = "ALTER TABLE " + ALIENS_TABLE + " ADD COLUMN ";
public AlienSQLiteHelper(Context context) { super(context, DB_NAME, null, DB_VERSION); }
@Override public void onCreate(SQLiteDatabase sqLiteDatabase) { sqLiteDatabase.execSQL(CREATE_ALIENS); }
@Override public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) { switch (oldVersion) { case 1: sqLiteDatabase.execSQL(DB_ALTER);
}
} }
public class AlienSQLiteHelper extends SQLiteOpenHelper {
public static final String DB_NAME = "aliens.db";
public static final int DB_VERSION = 1;
public static final String ALIENS_TABLE = "ALIENS";
public static final String COLUMN_NAME = "NAME";
public static final String COLUMN_TYPE = "TYPE";
public static final String CREATE_ALIENS = "CREATE TABLE " + ALIENS_TABLE + " (" +
"_id INTEGER PRIMARY KEY AUTOINCREMENT," +
COLUMN_NAME + " TEXT, " +
COLUMN_TYPE + " TEXT)";
public static final String DB_ALTER = "ALTER TABLE " + ALIENS_TABLE + " ADD COLUMN ";
public AlienSQLiteHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
}
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
sqLiteDatabase.execSQL(CREATE_ALIENS);
}
@Override
public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {
switch (oldVersion) {
case 1:
sqLiteDatabase.execSQL(DB_ALTER);
}
}
}
3 Answers
George Pirchalaishvili
3,747 PointsIf you are stuck on 1st part, than you should just change the DB_VERSION = 1; to 2.
Ben Wong
19,426 PointsGot it George. Much Appreciated it!
George Pirchalaishvili
3,747 PointsNo problem :)
MUZ140567 Merceline Nhamo
4,739 PointsJust that thanks very much,got it too