如何在 parcelable android studio java 中传递带有抽象 class 类型作为参数的 class
How to pass a class with an abstract class type as parameter in parcelable android studio java
我正在尝试将此 class 作为 android 中的可打包文件传递。
public class Outfit implements Parcelable {
private List<Item> itemList;
private String mName;
private String mImageUrl;
public Outfit() {}
public Outfit(String mName, String mImageUrl) {
this.mName = mName;
this.mImageUrl = mImageUrl;
}
protected Outfit(Parcel in) {
itemList = in.createTypedArrayList(Item.CREATOR);
mName = in.readString();
mImageUrl = in.readString();
}
public static final Creator<Outfit> CREATOR = new Creator<Outfit>() {
@Override
public Outfit createFromParcel(Parcel in) {
return new Outfit(in);
}
@Override
public Outfit[] newArray(int size) {
return new Outfit[size];
}
};
public String getmName() {
return mName;
}
public String getmImageUrl() {
return mImageUrl;
}
@Override
public String toString() {
return mName;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeTypedList(itemList);
parcel.writeString(mName);
parcel.writeString(mImageUrl);
}
}
问题是 Item 是抽象的并且 itemList = in.creatTypedArrayList(Item.CREATOR) 因为 Item 没有 CREATOR 。只有它的子classes有这个实现。
Item.java
public abstract class Item implements Parcelable {
private String mName;
private String mColor;
private String mImageUrl;
private List<TagHolder> tags = new ArrayList<>();
private String mKey;
public Item(){
}
public Item(String mName, String mColor, String mImageUrl) {
this.mName = mName;
this.mColor = mColor;
this.mImageUrl = mImageUrl;
}
protected Item(Parcel in) {
mName = in.readString();
mColor = in.readString();
mImageUrl = in.readString();
tags = in.createTypedArrayList(TagHolder.CREATOR);
mKey = in.readString();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(mName);
dest.writeString(mColor);
dest.writeString(mImageUrl);
dest.writeTypedList(tags);
dest.writeString(mKey);
}
@Override
public int describeContents() {
return 0;
}
public void setmName(String mName) {
this.mName = mName;
}
public void setmImageUrl(String mImageUrl) {
this.mImageUrl = mImageUrl;
}
public List<TagHolder> getTags() {
return tags;
}
public String getmColor() {
return mColor;
}
public String getmImageUrl() {
return mImageUrl;
}
public void setmColor(String mColor) {
this.mColor = mColor;
}
public String getmName() {
return mName;
}
public void setTags(List<TagHolder> tags) {
this.tags = tags;
}
@Exclude // dont need this in our firebase database
public String getKey() {
return mKey;
}
@Exclude
public void setMkey(String key) {
mKey = key;
}
public abstract String getCategory();
}
当我调用 put extra 时,我能够将一个列表作为一个可打包的数组进行打包。但是当我尝试为装备这样做时,它会出错。有什么办法可以将 Outfit 作为包裹传递吗?
您是否尝试使用其他方法获取列表?
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeList(itemList);
parcel.writeString(mName);
parcel.writeString(mImageUrl);
}
protected Outfit(Parcel in) {
in.readList(itemList, Item.class.getClassLoader());
mName = in.readString();
mImageUrl = in.readString();
}
我正在尝试将此 class 作为 android 中的可打包文件传递。
public class Outfit implements Parcelable {
private List<Item> itemList;
private String mName;
private String mImageUrl;
public Outfit() {}
public Outfit(String mName, String mImageUrl) {
this.mName = mName;
this.mImageUrl = mImageUrl;
}
protected Outfit(Parcel in) {
itemList = in.createTypedArrayList(Item.CREATOR);
mName = in.readString();
mImageUrl = in.readString();
}
public static final Creator<Outfit> CREATOR = new Creator<Outfit>() {
@Override
public Outfit createFromParcel(Parcel in) {
return new Outfit(in);
}
@Override
public Outfit[] newArray(int size) {
return new Outfit[size];
}
};
public String getmName() {
return mName;
}
public String getmImageUrl() {
return mImageUrl;
}
@Override
public String toString() {
return mName;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeTypedList(itemList);
parcel.writeString(mName);
parcel.writeString(mImageUrl);
}
}
问题是 Item 是抽象的并且 itemList = in.creatTypedArrayList(Item.CREATOR) 因为 Item 没有 CREATOR 。只有它的子classes有这个实现。
Item.java
public abstract class Item implements Parcelable {
private String mName;
private String mColor;
private String mImageUrl;
private List<TagHolder> tags = new ArrayList<>();
private String mKey;
public Item(){
}
public Item(String mName, String mColor, String mImageUrl) {
this.mName = mName;
this.mColor = mColor;
this.mImageUrl = mImageUrl;
}
protected Item(Parcel in) {
mName = in.readString();
mColor = in.readString();
mImageUrl = in.readString();
tags = in.createTypedArrayList(TagHolder.CREATOR);
mKey = in.readString();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(mName);
dest.writeString(mColor);
dest.writeString(mImageUrl);
dest.writeTypedList(tags);
dest.writeString(mKey);
}
@Override
public int describeContents() {
return 0;
}
public void setmName(String mName) {
this.mName = mName;
}
public void setmImageUrl(String mImageUrl) {
this.mImageUrl = mImageUrl;
}
public List<TagHolder> getTags() {
return tags;
}
public String getmColor() {
return mColor;
}
public String getmImageUrl() {
return mImageUrl;
}
public void setmColor(String mColor) {
this.mColor = mColor;
}
public String getmName() {
return mName;
}
public void setTags(List<TagHolder> tags) {
this.tags = tags;
}
@Exclude // dont need this in our firebase database
public String getKey() {
return mKey;
}
@Exclude
public void setMkey(String key) {
mKey = key;
}
public abstract String getCategory();
}
当我调用 put extra 时,我能够将一个列表作为一个可打包的数组进行打包。但是当我尝试为装备这样做时,它会出错。有什么办法可以将 Outfit 作为包裹传递吗?
您是否尝试使用其他方法获取列表?
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeList(itemList);
parcel.writeString(mName);
parcel.writeString(mImageUrl);
}
protected Outfit(Parcel in) {
in.readList(itemList, Item.class.getClassLoader());
mName = in.readString();
mImageUrl = in.readString();
}