Best practices for implementing SQLite in Android?

public class DatabaseHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "mydatabase.db";
    private static final int DATABASE_VERSION = 1;

    public DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        String createTable = "CREATE TABLE IF NOT EXISTS users (" +
                "id INTEGER PRIMARY KEY AUTOINCREMENT," +
                "name TEXT," +
                "email TEXT)";
        db.execSQL(createTable);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS users");
        onCreate(db);
    }
    
    public void addUser(String name, String email) {
        SQLiteDatabase db = this.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put("name", name);
        values.put("email", email);
        
        db.insert("users", null, values);
        db.close();
    }
    
    public Cursor getAllUsers() {
        SQLiteDatabase db = this.getReadableDatabase();
        return db.query("users", null, null, null, null, null, null);
    }
}