如何使用Room库保存图像url

implementation "androidx.room:room-runtime:2.4.0"
annotationProcessor "androidx.room:room-compiler:2.4.0"

@Entity(tableName = "images")
public class Image {
    @PrimaryKey(autoGenerate = true)
    private int id;
    private String imageUrl;

    // 构造函数、Getter和Setter方法等
}

@Dao
public interface ImageDao {
    @Insert
    void insert(Image image);

    @Query("SELECT * FROM images")
    List<Image> getAllImages();

    @Delete
    void delete(Image image);

    // 其他查询和更新方法
}

@Database(entities = {Image.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {
    public abstract ImageDao imageDao();

    // 单例模式获取数据库实例
    private static AppDatabase instance;
    public static synchronized AppDatabase getInstance(Context context) {
        if (instance == null) {
            instance = Room.databaseBuilder(context.getApplicationContext(),
                    AppDatabase.class, "app_database")
                    .build();
        }
        return instance;
    }
}

// 获取数据库实例
AppDatabase db = AppDatabase.getInstance(getApplicationContext());

// 创建Image对象并设置图像URL
Image image = new Image();
image.setImageUrl("https://example.com/image.jpg");

// 插入图像URL到数据库
db.imageDao().insert(image);

// 获取数据库实例
AppDatabase db = AppDatabase.getInstance(getApplicationContext());

// 获取所有图像URL
List<Image> images = db.imageDao().getAllImages();

// 遍历图像URL并进行相应操作
for (Image image : images) {
    String imageUrl = image.getImageUrl();
    // 进行其他操作，如显示图像等
}