Java Parcelable 协议需要一个名为 CREATOR 的 Parcelable.Creator 对象（我确实有 CREATOR）
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Parcelable protocol requires a Parcelable.Creator object called CREATOR (I do have CREATOR)
提问by Guy
I am trying to pass Parcelable data from one intent to another and this is the error I am getting:
我试图将 Parcelable 数据从一个意图传递到另一个意图，这是我得到的错误：
08-31 14:12:22.709: E/AndroidRuntime(9931): FATAL EXCEPTION: main
08-31 14:12:22.709: E/AndroidRuntime(9931): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.matejsoftware.cardscoretracker/com.matejsoftware.cardscoretracker.Igra}: android.os.BadParcelableException: Parcelable protocol requires a Parcelable.Creator object called CREATOR on class com.matejsoftware.cardscoretracker.Novaigra$Player
The thing is: I do have Parcelable.Creator object. I'll post the whole Parcelable code below:
问题是：我确实有 Parcelable.Creator 对象。我将在下面发布整个 Parcelable 代码：
public class Player implements Parcelable{
String name;
int score;
@Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeInt(score);
}
public Player(Parcel source){
score = source.readInt();
name = source.readString();
}
public Player(int score, String name){
this.score = score;
this.name = name;
}
}
public class MyCreator implements Parcelable.Creator<Player> {
@Override
public Player createFromParcel(Parcel source) {
return new Player(source);
}
@Override
public Player[] newArray(int size) {
return new Player[size];
}
}
Is there somethin wrong with the CREATOR? The app crashes as soon as I click the button to start the next activity.
CREATOR 有什么问题吗？一旦我单击按钮开始下一个活动，应用程序就会崩溃。
This is how I "retrieve" Parcelable data in the second activity:
这就是我在第二个活动中“检索” Parcelable 数据的方式：
//global variable
ArrayList<Player> playersParceledData;
//This is in onCreate
playersData = getIntent();
playersParceledData = playersData.getParcelableArrayListExtra("parceledData");
Also, this is how I put class objects to ParcelableArrayListExtra:
此外，这就是我将类对象放入 ParcelableArrayListExtra 的方式：
Player newPlayer = new Player(0, text);
playersParceledData.add(newPlayer);
zacniIgro.putParcelableArrayListExtra("parceledData", playersParceledData);
采纳答案by Imtiyaz Khalani
You are have different sequence when reading from Parcel than the one you write in.
从 Parcel 读取与写入时的顺序不同。
In writeToParcel()you are first putting String but in the HeatFriendDetail(Parcel in), you first read integer. It is not the correct way because the order or read/write matters.
在writeToParcel()您首先放入 String 但在 中HeatFriendDetail(Parcel in)，您首先读取整数。这不是正确的方法，因为顺序或读/写很重要。
Following is the code which makes correct order when writing/reading the data to/from Parcel (also see this link):
以下是在向/从 Parcel 写入/读取数据时生成正确顺序的代码（另请参阅此链接）：
public class FriendDetail implements Parcelable {
private String full_name;
private int privacy;
public HeatFriendDetail(Parcel in) {
this.full_name = in.readString();
this.privacy = in.readInt();
}
public HeatFriendDetail() {
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(this.full_name);
dest.writeInt(this.privacy);
}
public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
public HeatFriendDetail createFromParcel(Parcel in) {
return new HeatFriendDetail(in);
}
public HeatFriendDetail[] newArray(int size) {
return new HeatFriendDetail[size];
}
};
// GETTER SETTER//
}
回答by Biraj Zalavadia
Try this way
试试这个方法
// create List of player
ArrayList<HashMap<String, String>> players = new ArrayList<HashMap<String, String>>();
//create Player
HashMap<String, String> player = new HashMap<String, String>();
player.put("score", "20");//replace 20 with your score variable
player.put("name", "Biraj");//replace Biraj with your name variable
// Add to arraylist
players.add(player);
// pass to intent
Intent i;
i.putExtra("PLAYERS", players);
// read From intent
ArrayList<HashMap<String, String>> playerFromintent = (ArrayList<HashMap<String, String>>) getIntent().getSerializableExtra("PLAYERS");
// read from ArrayList
for (HashMap<String, String> hashMap : playerFromintent) {
System.out.println("Name : " + hashMap.get("name"));
System.out.println("Score : " + hashMap.get("score"));
}
回答by SpyZip
I had this error message when the CREATOR class was not static
当 CREATOR 类不是静态时，我收到此错误消息
回答by kris larson
Just ran into this.
刚碰到这个。
I had a hunch, and I looked in my ProGuard mapping file.
我有一种预感，我查看了我的 ProGuard 映射文件。
Normally I declare CREATOR like this:
通常我这样声明 CREATOR：
public static final Parcelable.Creator<ClassA> CREATOR =
new Parcelable.Creator<ClassA>() {
which shows up in the mapping file like this:
它显示在映射文件中，如下所示：
android.os.Parcelable$Creator CREATOR -> CREATOR
..except for one class, the class that was reported with the error. I declared it like this:
..除了一类，报错误的类。我是这样声明的：
public static Creator<ClassB> CREATOR =
new Creator<ClassB>() {
Lo and behold:
你瞧：
android.os.Parcelable$Creator CREATOR -> a
So if you are getting this exception in your production release, check your mapping file. I think ProGuard is really sensitive to how CREATOR is declared when deciding not to obfuscate it.
因此，如果您在生产版本中遇到此异常，请检查您的映射文件。我认为 ProGuard 在决定不混淆它时对 CREATOR 的声明方式非常敏感。
回答by Nika Kurdadze
I received this error in release apk only, because the CREATOR was not public.
我仅在发布 apk 中收到此错误，因为 CREATOR 未公开。
I changed this :
我改变了这个：
static final Parcelable.Creator<Station> CREATOR = new Parcelable.Creator<Station>() {
To this :
对此：
public static final Parcelable.Creator<Station> CREATOR = new Parcelable.Creator<Station>() {
回答by Arjun Othayoth
If you are using proguard rules add this line in to your proguard-rules.pro
如果您使用 proguard 规则，请将此行添加到您的 proguard-rules.pro
-keepnames class * implements android.os.Parcelable {
public static final ** CREATOR;
}
}
