使用String将枚举写入parcel

Question

我有这样的Parcelable枚举:

 public enum Option implements Parcelable {

    DATA_BASE, TRIPS, BIG_PHOTOS,
    OLD_PHOTOS, FILTERS_IMAGES,
    CATEGORIES_IMAGES, PAGES,
    SOUNDS, PUBLIC_TRANSPORT, MAPS;        

    public static final Parcelable.Creator<Option> CREATOR = new Parcelable.Creator<Option>() {

        public Option createFromParcel(Parcel in) {
            return Option.values()[in.readInt()];
        }

        public Option[] newArray(int size) {
            return new Option[size];
        }

    };

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel out, int flags) {
        out.writeInt(ordinal());
    }
}

现在我修改了它,它看起来像:

 public enum Option implements Parcelable {

    DATA_BASE("Database"), TRIPS("Trips"), BIG_PHOTOS("BigPhotos"),
    OLD_PHOTOS("OldPhotos"), FILTERS_IMAGES("FiltersImages"),
    CATEGORIES_IMAGES("CategoriesImages"), PAGES("Pages"),
    SOUNDS("Sounds"), PUBLIC_TRANSPORT("PublicTransport"), MAPS("Maps");

    private String option;

    Option(String option){
        this.option = option;
    }

    public String getName(){
        return option;
    }

    public static final Parcelable.Creator<Option> CREATOR = new Parcelable.Creator<Option>() {

        public Option createFromParcel(Parcel in) {
            //...
        }

        public Option[] newArray(int size) {
            //...
        }

    };

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel out, int flags) {
        //...
    }
}

我应该如何在这个枚举中实现writeToParcel(),createFromParcel()和newArray()int？我需要通过额外的意图传递它.

Answer 1

这是一个老问题,但有一个更好的解决方案:

dest.writeString(myEnumOption.name());

和

myEnumOption = MyEnum.valueOf(in.readString());

Answer 2

我通过以下方式解决了它：

public enum Option implements Parcelable {

    DATA_BASE("Database"), TRIPS("Trips"), BIG_PHOTOS("BigPhotos"),
    OLD_PHOTOS("OldPhotos"), FILTERS_IMAGES("FiltersImages"),
    CATEGORIES_IMAGES("CategoriesImages"), PAGES("Pages"),
    SOUNDS("Sounds"), PUBLIC_TRANSPORT("PublicTransport"), MAPS("Maps");

    private String option;

    Option(String option){
        this.option = option;
    }

    public String getName(){
        return option;
    }

    private void setOption(String option){
        this.option = option;
    }

    public static final Parcelable.Creator<Option> CREATOR = new Parcelable.Creator<Option>() {

        public Option createFromParcel(Parcel in) {
            Option option = Option.values()[in.readInt()];
            option.setOption(in.readString());
            return option;
        }

        public Option[] newArray(int size) {
            return new Option[size];
        }

    };

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel out, int flags) {
        out.writeInt(ordinal());
        out.writeString(option);
    }
}