private static final String LATITUDE = "latitude";
private static final String LONGITUDE = "longitude";

String CREATE_SETTINGS_TABLE = "CREATE TABLE "
     + TABLE_SETTINGS + "("
     + KEY_ID + " INTEGER PRIMARY KEY,"
     + KEY_NAME + " TEXT UNIQUE NOT NULL, "
     + KEY_VALUE + " TEXT, "
     + DATA_TYPE + " TEXT "
     + ")";
db.execSQL(CREATE_SETTINGS_TABLE);

insertSetting(LATITUDE, "");
insertSetting(LONGITUDE, "");

private void insertSetting(String name, String value) {
    SQLiteDatabase myDb = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_NAME, name);
    values.put(KEY_VALUE, value);
    values.put(DATA_TYPE, "text");
    // Inserting Row
    myDb.insert(TABLE_SETTINGS, null, values);

    Log.d(TAG, "Default settings inserted into sqlite: ");
}

public void updateTableSettings(String keyName, String keyValue) {
    SQLiteDatabase db = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_NAME, keyName);
    values.put(KEY_VALUE, keyValue);

    String[] whereArgs = {"" + keyName};
    db.update(TABLE_NOTIFICATIONS, values, KEY_NAME + "=?", whereArgs);
    db.close(); // Closing database connection

    Log.d(TAG, "User updated in sqlite db: " + keyName);
}

public HashMap<String, String> getSettings() {
    HashMap<String, String> settings = new HashMap<>();
    String selectQuery = "SELECT  * FROM " + TABLE_SETTINGS;

    SQLiteDatabase db = this.getReadableDatabase();
    Cursor cursor = db.rawQuery(selectQuery, null);
    cursor.moveToFirst();
    if (cursor.getCount() > 0) {
        cursor.moveToFirst();
            settings.put(KEY_NAME, cursor.getString(1));
            settings.put(KEY_VALUE, cursor.getString(2));

        cursor.close();
        db.close();
    } else {
        insertDefaultNotificationSettings();
        return getSettings();
    }
    cursor.close();
    db.close();
    // return user
    Log.d(TAG, "Fetching notification settings from sqlite db");

    return settings;
}

db = new SQLiteHandler(getApplicationContext());
HashMap<String, String> settings = db.getSettings();

map.setOnMapLongClickListener(arg0 -> {
    map.clear();
    db.updateTableSettings("latitude", String.valueOf(arg0.latitude));
    db.updateTableSettings("longitude", String.valueOf(arg0.longitude));
    map.addMarker(marker);
}