@Override
public final void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
try {
onRobustUpgrade(db, oldVersion, newVersion);
} catch (SQLiteException e) {
// The database has entered an unknown state. Try to recover.
try {
regenerateTables(db);
} catch (SQLiteException e2) {
dropAndCreateTables(db);
}
}
}
