Android Room -“无法弄清楚如何将此字段保存到数据库中。”

public class Converters {
    @TypeConverter
    public static MyCustomType fromString(String value) {
        // 实现将字符串转换为MyCustomType的逻辑
    }

    @TypeConverter
    public static String fromMyCustomType(MyCustomType value) {
        // 实现将MyCustomType转换为字符串的逻辑
    }
}

@Database(entities = {MyEntity.class}, version = 1)
@TypeConverters({Converters.class})
public abstract class AppDatabase extends RoomDatabase {
    public abstract MyDao myDao();
}

@Entity(tableName = "my_table")
public class MyEntity {
    @PrimaryKey(autoGenerate = true)
    public int id;

    @ColumnInfo(name = "name")
    public String name;

    // 其他字段
}

public class MyDate {
    public int year;
    public int month;
    public int day;
}

public class Converters {
    @TypeConverter
    public static MyDate fromString(String value) {
        String[] parts = value.split("-");
        MyDate date = new MyDate();
        date.year = Integer.parseInt(parts[0]);
        date.month = Integer.parseInt(parts[1]);
        date.day = Integer.parseInt(parts[2]);
        return date;
    }

    @TypeConverter
    public static String fromMyDate(MyDate date) {
        return date.year + "-" + date.month + "-" + date.day;
    }
}

@Database(entities = {MyEntity.class}, version = 1)
@TypeConverters({Converters.class})
public abstract class AppDatabase extends RoomDatabase {
    public abstract MyDao myDao();
}