空间不能选择构造函数，因为多个构造函数都是合适的错误。
空间不能选择构造函数，因为多个构造函数都是合适的错误。
提问于 2017-06-19 00:39:11
我试图在我的android项目中实现持久库，但是在编译时捕捉到这个错误：
错误:空间不能选择构造函数，因为多个构造函数是合适的。尝试用@Ignore对不需要的构造函数进行注释。
错误码：
@Entity
data class Site(
var name: String = "",
var url: String = "",
@PrimaryKey(autoGenerate = true) var id: Long = 0)Stack Overflow用户
发布于 2018-06-15 03:14:48
留下我的答案以防对任何人有帮助。我遇到了同样的问题，上面的答案都没有用。唯一起作用的是从data class变成class。我邀请任何人尝试使用相同的代码，并解释它为什么会这样做：
先于
@Entity
data class ImgurGalleryPost (
@NotNull @PrimaryKey
var id: String,
var title: String?,
var description: String?,
var datetime: Int?,
var cover: String?,
var coverWidth: Int?,
var coverHeight: Int?,
var accountUrl: String?,
var accountId: Int?,
var privacy: String?,
var layout: String?,
var views: Int?,
var link: String?,
var ups: Int?,
var downs: Int?,
var points: Int?,
var score: Int?,
var isAlbum: Boolean?,
var vote: Boolean?,
var favorite: Boolean?,
var nsfw: Boolean?,
var section: String?,
var commentCount: Int?,
var favoriteCount: Int?,
var topic: String?,
var topicId: Int?,
var imagesCount: Int?,
var inGallery: Boolean?,
var isAd: Boolean?,
@NotNull @Ignore
var tags: List<ImgurGalleryTag>,
var inMostViral: Boolean?,
@NotNull @Ignore
var images: List<ImgurGalleryImage>
)后
@Entity
class ImgurGalleryPost (
@NotNull @PrimaryKey
var id: String,
var title: String?,
var description: String?,
var datetime: Int?,
var cover: String?,
var coverWidth: Int?,
var coverHeight: Int?,
var accountUrl: String?,
var accountId: Int?,
var privacy: String?,
var layout: String?,
var views: Int?,
var link: String?,
var ups: Int?,
var downs: Int?,
var points: Int?,
var score: Int?,
var isAlbum: Boolean?,
var vote: Boolean?,
var favorite: Boolean?,
var nsfw: Boolean?,
var section: String?,
var commentCount: Int?,
var favoriteCount: Int?,
var topic: String?,
var topicId: Int?,
var imagesCount: Int?,
var inGallery: Boolean?,
var isAd: Boolean?,
@NotNull @Ignore
var tags: List<ImgurGalleryTag>,
var inMostViral: Boolean?,
@NotNull @Ignore
var images:
List<ImgurGalleryImage>
)这确实很奇怪，但我怀疑这是Android缓存问题，因为将其更改为data class会导致错误再次出现。看来这是集合字段的某种问题。我在生成的类中检查了构造函数，它看起来很好，我不知道为什么构建失败，即使构造函数是正确生成的：
public ImgurGalleryPost(@org.jetbrains.annotations.NotNull()
java.lang.String id, @org.jetbrains.annotations.Nullable()
java.lang.String title, @org.jetbrains.annotations.Nullable()
java.lang.String description, @org.jetbrains.annotations.Nullable()
java.lang.Integer datetime, @org.jetbrains.annotations.Nullable()
java.lang.String cover, @org.jetbrains.annotations.Nullable()
java.lang.Integer coverWidth, @org.jetbrains.annotations.Nullable()
java.lang.Integer coverHeight, @org.jetbrains.annotations.Nullable()
java.lang.String accountUrl, @org.jetbrains.annotations.Nullable()
java.lang.Integer accountId, @org.jetbrains.annotations.Nullable()
java.lang.String privacy, @org.jetbrains.annotations.Nullable()
java.lang.String layout, @org.jetbrains.annotations.Nullable()
java.lang.Integer views, @org.jetbrains.annotations.Nullable()
java.lang.String link, @org.jetbrains.annotations.Nullable()
java.lang.Integer ups, @org.jetbrains.annotations.Nullable()
java.lang.Integer downs, @org.jetbrains.annotations.Nullable()
java.lang.Integer points, @org.jetbrains.annotations.Nullable()
java.lang.Integer score, @org.jetbrains.annotations.Nullable()
java.lang.Boolean isAlbum, @org.jetbrains.annotations.Nullable()
java.lang.Boolean vote, @org.jetbrains.annotations.Nullable()
java.lang.Boolean favorite, @org.jetbrains.annotations.Nullable()
java.lang.Boolean nsfw, @org.jetbrains.annotations.Nullable()
java.lang.String section, @org.jetbrains.annotations.Nullable()
java.lang.Integer commentCount, @org.jetbrains.annotations.Nullable()
java.lang.Integer favoriteCount, @org.jetbrains.annotations.Nullable()
java.lang.String topic, @org.jetbrains.annotations.Nullable()
java.lang.Integer topicId, @org.jetbrains.annotations.Nullable()
java.lang.Integer imagesCount, @org.jetbrains.annotations.Nullable()
java.lang.Boolean inGallery, @org.jetbrains.annotations.Nullable()
java.lang.Boolean isAd, @org.jetbrains.annotations.NotNull()
java.util.List<com.kimboo.core.model.ImgurGalleryTag> tags, @org.jetbrains.annotations.Nullable()
java.lang.Boolean inMostViral, @org.jetbrains.annotations.NotNull()
java.util.List<com.kimboo.core.model.ImgurGalleryImage> images) {
super();
}如果有人可以想办法解决这个问题，而不需要从data class更改为class，请在下面发表评论。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/44620835
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