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Start your free trialcraig hlatywayo
4,017 PointsWe have an app used to track all known alien races. We are going to release a new version that allows users to select a
can you please help me with this challenge
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:database.execSQL(DB_ALTER);
}
}
}
2 Answers
Rares Conea
Courses Plus Student 15,000 PointsTask 1/5 : Change the value of DB_VERSION, DB_VERSION = 2. Task 2/5 : Add "public static final String COLUMN_HOME_PLANET = "HOME_PLANET";" in your code. Task 3/5 : Modify the CREATE_ALIENS String to look like: public static final String CREATE_ALIENS = "CREATE TABLE " + ALIENS_TABLE + " (" + "_id INTEGER PRIMARY KEY AUTOINCREMENT," + COLUMN_NAME + " TEXT, " + COLUMN_TYPE + " TEXT, " + COLUMN_HOME_PLANET + " TEXT)" ; Task 4/5 : Modify the DB_ALTER String to look like: public static final String DB_ALTER = "ALTER TABLE " + ALIENS_TABLE + " ADD COLUMN " + COLUMN_HOME_PLANET + " TEXT"; Task 5/5 : In onUpgrade after the case statement for 1 just add "database.execSQL(DB_ALTER);"
craig hlatywayo
4,017 PointsThanks for the help the code worked