Unmarshalling unknown type code XXXXX at offset YYY when using getIntent().getExtras().getInt()

Question

I'm trying to pass an int value from activity A to activity B.

Activity A:

Intent intent = new Intent(ActivityA.this, ActivityB.class);
intent.putExtra("list_size", list.size());
for (int i = 0; i < list.size(); i++) {
     intent.putExtra("account" + i, accountList.get(i));
}
startActivityForResult(intent, 2);

Activity B:

    private void init() {
        Intent intent = getIntent();
        int listSize = intent.getIntExtra("list_size", 0); // Error  thrown here
        for (int i = 0; i < listSize; i++) {
            newList.add((Account) intent.getParcelableExtra("account" + i));
        }
    }

Account (this is the list item):

public class Account implements Parcelable {

    private Long accountId;
    private String accountName;
    private Set<String> followedAccountsIds = new HashSet<>();
    private Set<String> followersAccountsIds = new HashSet<>();
    private Set<Integer> likedTagsIds = new HashSet<>();
    private Set<Post> postsByAccount = new HashSet<>();


    public Account() {
    }

    public Account(Long accountId, String accountName, Set<String> followedAccountsIds,
                   Set<String> followersAccountsIds, Set<Integer> likedTagsIds, Set<Post> postsByAccount) {
        this.accountId = accountId;
        this.accountName = accountName;
        this.followedAccountsIds = followedAccountsIds;
        this.followersAccountsIds = followersAccountsIds;
        this.likedTagsIds = likedTagsIds;
        this.postsByAccount = postsByAccount;
    }

    // Omitted getters and setters for brevity

    protected Account(Parcel in) {
        if (in.readByte() == 0) {
            accountId = null;
        } else {
            accountId = in.readLong();
        }
        accountName = in.readString();
    }

    public static final Creator<Account> CREATOR = new Creator<Account>() {
        @Override
        public Account createFromParcel(Parcel in) {
            return new Account(in);
        }

        @Override
        public Account[] newArray(int size) {
            return new Account[size];
        }
    };



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

    @Override
    public void writeToParcel(Parcel parcel, int i) {
        parcel.writeLong(accountId);
        parcel.writeString(accountName);
    }
}

Error that is thrown:

Caused by: java.lang.RuntimeException: Parcel android.os.Parcel@8b4252e: Unmarshalling unknown type code 6357091 at offset 140
                  at android.os.Parcel.readValue(Parcel.java:2453)
                  at android.os.Parcel.readArrayMapInternal(Parcel.java:2727)
                  at android.os.BaseBundle.unparcel(BaseBundle.java:269)
                  at android.os.BaseBundle.getInt(BaseBundle.java:867)
                  at android.content.Intent.getIntExtra(Intent.java:6637)
                  at com.david.songshareandroid.activities.ActivityB.init(ActivityB.java:33)
                  at com.david.songshareandroid.activities.ActivityB.onCreate(ActivityB.java:28)
                  at android.app.Activity.performCreate(Activity.java:6912)
                  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126)
                  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2877)

In ActivityB when intent.getIntExtra("list_size", 0) is invoked, the error above occurs. If I remove the for loop in ActivityA, that is the objects are not getting passed to ActivityB, then the error does not occur anymore.

Zaid Mirza · Answer 1 · 2018-01-15T08:38:50.233

0

You are putting something but getting something else.

You are putting an Int

intent.putExtra("list_size", list.size());

Now on Target Activity do this:

Intent intent = getIntent();
int number = intent.getIntExtra("list_size",0);

and your SomeObject class must implement Parceable interface

edited Jan 15 '18 at 08:38

answered Jan 15 '18 at 08:26

Zaid Mirza

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Still doesn't work – cod3min3 Jan 15 '18 at 08:37
opps my mistake, check now with getIntExtra.. – Zaid Mirza Jan 15 '18 at 08:39
I updated my code to reflect what I have now, but I'm still getting the same error – cod3min3 Jan 15 '18 at 08:56

Anton Kazakov · Answer 2 · 2018-01-15T09:27:50.767

0

First you taking Bundle Extras using intent.getExtras() which returns you bundle object which contains key-value pairs, and then you trying to find pair with key list_size which is not in there. So you should use intent.getIntExtra() instead.

UPD I don't think that your parcel implementation should work because of Sets. Use Set.toArray() method, then in Parcel.writeTypedArray write it to the parcel.

edited Jan 15 '18 at 09:27

answered Jan 15 '18 at 08:38

Anton Kazakov

2,740
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It's still not working. I updated the code to show what I have now. – cod3min3 Jan 15 '18 at 08:57
@cod3min3 which line of code give you error? show your list item class – Anton Kazakov Jan 15 '18 at 09:00
I added more information in this post at the end, I also included the implementation of the list item. – cod3min3 Jan 15 '18 at 09:25
@cod3min3 check updated answer – Anton Kazakov Jan 15 '18 at 09:28
can you provide an example of what you mean just to make things more clear? – cod3min3 Jan 15 '18 at 11:45
@cod3min3 don't think I can make it more clear. Here is method https://developer.android.com/reference/android/os/Parcel.html#writeTypedArray%28T%5B%5D,%20int%29 – Anton Kazakov Jan 15 '18 at 11:59
@cod3min3 by the way your Post class must implement parcelable too – Anton Kazakov Jan 15 '18 at 12:00

Unmarshalling unknown type code XXXXX at offset YYY when using getIntent().getExtras().getInt()

2 Answers2