如何使 RealmList<String> 可打包?
How to make RealmList<String> Parcelable?
@Parcelize open class TestClass(
@SerialName("title")
var title: String,
@SerialName("list")
var list: RealmList<String>
) : RealmObject() { ... }
如何在此实现中分割 "list"
变量?
它说,即使我添加 @RawValue
.
也无法打包这种类型的值
这里有什么选择?一个有解释的例子是完美的。
与类似,您可以
fun Parcel.readStringRealmList(): RealmList<String>? = when {
readInt() > 0 -> RealmList<String>().also { list ->
repeat(readInt()) {
list.add(readString())
}
}
else -> null
}
fun Parcel.writeStringRealmList(realmList: RealmList<String>?) {
writeInt(when {
realmList == null -> 0
else -> 1
})
if (realmList != null) {
writeInt(realmList.size)
for (t in realmList) {
writeString(t)
}
}
}
那你可以做
object StringRealmListParceler: Parceler<RealmList<String>?> {
override fun create(parcel: Parcel): RealmList<String>? = parcel.readStringRealmList()
override fun RealmList<String>?.write(parcel: Parcel, flags: Int) {
parcel.writeStringRealmList(this)
}
}
现在你可以做
@Parcelize
open class TestClass(
@SerialName("title")
var title: String = "",
@SerialName("list")
var list: @WriteWith<StringRealmListParceler> RealmList<String>? = null
) : RealmObject(), Parcelable { ... }
@Parcelize open class TestClass(
@SerialName("title")
var title: String,
@SerialName("list")
var list: RealmList<String>
) : RealmObject() { ... }
如何在此实现中分割 "list"
变量?
它说,即使我添加 @RawValue
.
也无法打包这种类型的值
这里有什么选择?一个有解释的例子是完美的。
与
fun Parcel.readStringRealmList(): RealmList<String>? = when {
readInt() > 0 -> RealmList<String>().also { list ->
repeat(readInt()) {
list.add(readString())
}
}
else -> null
}
fun Parcel.writeStringRealmList(realmList: RealmList<String>?) {
writeInt(when {
realmList == null -> 0
else -> 1
})
if (realmList != null) {
writeInt(realmList.size)
for (t in realmList) {
writeString(t)
}
}
}
那你可以做
object StringRealmListParceler: Parceler<RealmList<String>?> {
override fun create(parcel: Parcel): RealmList<String>? = parcel.readStringRealmList()
override fun RealmList<String>?.write(parcel: Parcel, flags: Int) {
parcel.writeStringRealmList(this)
}
}
现在你可以做
@Parcelize
open class TestClass(
@SerialName("title")
var title: String = "",
@SerialName("list")
var list: @WriteWith<StringRealmListParceler> RealmList<String>? = null
) : RealmObject(), Parcelable { ... }