我正在调查自动值和它的扩展,即我的
Android应用程序中的auto-value-parcel和auto-value-parcel-adapter.
我有这些模型类： –
@AutoValue
public abstract class Xenarchaeota implements Parcelable {
@ParcelAdapter(AmoebaTypeAdapter.class)
public abstract Set<Amoeba> amoebas();
public static Builder builder() {
return new AutoValue_Xenarchaeota.Builder();
}
@AutoValue.Builder
public abstract static class Builder {
public abstract Builder setAmoebas(Set<Amoeba> value);
public abstract Xenarchaeota build();
}
}
和
@AutoValue
public abstract class Amoeba implements Parcelable {
public abstract String surname();
public static Builder builder() {
return new AutoValue_Amoeba.Builder();
}
@AutoValue.Builder
public abstract static class Builder {
public abstract Builder surname(final String value);
public abstract Amoeba build();
}
}
我的类型适配器是我的问题出现的地方
class AmoebaTypeAdapter implements TypeAdapter<Set<Amoeba>> {
@Override
public Set<Amoeba> fromParcel(Parcel in) {
final ArrayList<Amoeba> arrayList = new ArrayList<>();
in.readTypedList(arrayList,Amoeba.CREATOR); // How to access the CREATOR?
return new TreeSet<>(arrayList);
}
@Override
public void toParcel(Set<Amoeba> value,Parcel dest) {
final ArrayList<Amoeba> arrayList = new ArrayList<>(value);
dest.writeTypedList(arrayList);
}
}
我需要传递给readTypedArray的CREATOR在AutoValue_Amoeba中声明.
解决方法
AutoValue：Parcel扩展无法处理集合,但如果将属性转换为List,则无需自定义适配器即可开箱即用.如果你想把它当成一个集合你就可以做到这一点.请记住,您可能还想缓存Set.
@AutoValue
public abstract class Xenarchaeota implements Parcelable {
abstract List<Amoeba> amoebaList();
public Set<Amoeba> amoebas() {
return new TreeSet(amoebaList());
}
public static Builder builder() {
return new AutoValue_Xenarchaeota.Builder();
}
@AutoValue.Builder
public abstract static class Builder {
public abstract Builder setAmoebas(Set<Amoeba> value);
public abstract Xenarchaeota build();
}
}
