android studio连接SQLyog

Android Studio是一款非常强大的集成开发环境，可以用于开发Android应用程序。而SQLyog则是一款Windows平台下的MySQL数据库管理工具。想要在Android Studio中连接SQLyog进行数据库操作，需要以下步骤：

1. 在Android Studio中创建一个新项目。
2. 在项目中添加MySQL驱动库，可以在build.gradle文件中添加以下代码：

dependencies {
    implementation files('libs/mysql-connector-java-5.1.47.jar')
}

3. 在项目中创建一个数据库类，并使用Java代码连接到SQLyog数据库。以下是一个简单的例子：

public class DatabaseHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "mydatabase.db";
    private static final int DATABASE_VERSION = 1;
    private static final String TABLE_NAME = "mytable";
    private static final String COLUMN_ID = "id";
    private static final String COLUMN_NAME = "name";
    private static final String COLUMN_EMAIL = "email";

    private SQLiteDatabase db;

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

    @Override
    public void onCreate(SQLiteDatabase db) {
        String query = "CREATE TABLE " + TABLE_NAME + "(" +
                COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
                COLUMN_NAME + " TEXT, " +
                COLUMN_EMAIL + " TEXT)";
        db.execSQL(query);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        String query = "DROP TABLE IF EXISTS " + TABLE_NAME;
        db.execSQL(query);
        onCreate(db);
    }

    public void insertData(String name, String email) {
        ContentValues values = new ContentValues();
        values.put(COLUMN_NAME, name);
        values.put(COLUMN_EMAIL, email);
        db.insert(TABLE_NAME, null, values);
    }

    public Cursor getData() {
        String query = "SELECT * FROM " + TABLE_NAME;
        return db.rawQuery(query, null);
    }
}

4. 在需要使用数据库的Activity中实例化该类，并调用其中的方法进行数据库操作，例如：

public class MainActivity extends AppCompatActivity {

    private DatabaseHelper databaseHelper;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        databaseHelper = new DatabaseHelper(this);

        databaseHelper.insertData("John", "john@example.com");

        Cursor cursor = databaseHelper.getData();
        while (cursor.moveToNext()) {
            int id = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.COLUMN_ID));
            String name = cursor.getString(cursor.getColumnIndex(DatabaseHelper.COLUMN_NAME));
            String email = cursor.getString(cursor.getColumnIndex(DatabaseHelper.COLUMN_EMAIL));
            Log.i("MainActivity", "id: " + id + ", name: " + name + ", email: " + email);
        }
        cursor.close();
    }
}