方法openOrCreateDatabase(String,int,null)未定义

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

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) {
        // 创建数据库表格的逻辑
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // 升级数据库的逻辑
    }

    public void openDatabase() {
        SQLiteDatabase database = this.openOrCreateDatabase(DATABASE_NAME, MODE_PRIVATE, null);
        // 执行数据库操作
        database.close();
    }
}