Android 如何在房间迁移中更改索引？

旧实体如下所示：

@Entity(tableName = "d_course",
    foreignKeys = @ForeignKey(entity = DUser.class, parentColumns = "id", childColumns = "studio"),
    indices = @Index(value = "studio"))

@Entity(tableName = "d_course",
    foreignKeys = @ForeignKey(entity = DUser.class, parentColumns = "id", childColumns = "studio"),
    indices = @Index(value = {"id", "studio"}))

新实体如下：

@Entity(tableName = "d_course",
    foreignKeys = @ForeignKey(entity = DUser.class, parentColumns = "id", childColumns = "studio"),
    indices = @Index(value = "studio"))

@Entity(tableName = "d_course",
    foreignKeys = @ForeignKey(entity = DUser.class, parentColumns = "id", childColumns = "studio"),
    indices = @Index(value = {"id", "studio"}))

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如何迁移此索引更改。

尝试在迁移中指定此索引更改，例如（Kotlin）：

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仅供参考。。。。。在这里，我想补充一些房间期望的重要事情。每当您添加新列并为其编写迁移时。在模型类中的其他字段末尾添加此列。（是的！在模型课上）预订房间事宜。无论何时创建索引。始终遵循惯例，否则房间将不允许您添加索引。