java.util.ArrayList cannot be cast to android.os.Parcelable. key expected Parcelable but value was a java.util.ArrayList

Question

what is the reason of the below error

Key Object_list expected Parcelable but value was a java.util.ArrayList.  The default value <null> was returned.

this is full code

public class SingleObjectActivity extends Activity
{
    public static final String OBJECT_LIST = "Object_list";
    private ArrayList<Listitem> Objects;
    public ImageView imgview;
    private Listitem listObjects;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.singleobject);
        Bundle extras = getIntent().getExtras();

        imgview = (ImageView) findViewById(R.id.funnyimage);

        if (extras.containsKey(OBJECT_LIST)) {
            this.listObjects = extras.getParcelable(OBJECT_LIST);
        } else {
            this.listObjects = null;
        }

        if (listObjects != null) {
            Picasso.
                    with(getApplicationContext()).
                    load(listObjects.getUrl())
                            //load()
                    .placeholder(R.drawable.logo)
                    .fit()
                    .noFade()
                    .into(imgview);

        }
    }
}

sending intent

        ArrayList<Listitem> personArrayList = new ArrayList<>();
        personArrayList.add(new Listitem(item.getOrder(), item.getId(), item.getUrl(), item.getUserName(), item.getLikes()));

        Intent intent = new Intent(mcontext,SingleObjectActivity.class);
        intent.putExtra("Object_list", personArrayList);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        mcontext.startActivity(intent);

edit 4

        ArrayList<Listitem> items = getIntent().getParcelableArrayListExtra("Object_list");
        Bundle extras = getIntent().getExtras();

        imgview = (ImageView) findViewById(R.id.funnyimage);

     /*   if (extras != null) {
            Objects = extras.getParcelableArrayList(OBJECT_LIST);
        } else {
            Objects = new ArrayList<Listitem>();
        }*/

        if (extras.containsKey(OBJECT_LIST)) {
//            this.listObjects = extras.getParcelable(OBJECT_LIST);
         //   this.listObjects = (Listitem) extras.getParcelable(OBJECT_LIST);
            this.Objects=  extras.getParcelableArrayList("Object_list");


        } else {
            this.Objects = null;
        }

        if (this.listObjects != null) {
            Picasso.
                    with(getApplicationContext()).
                    load(this.listObjects.getUrt())
                            //load()
                    .placeholder(R.drawable.logo)
                    .fit()
                    .noFade()
                    .into(imgview);

        }
    }

Sar's answer is correct, assuming of course that `ListItem` implements the `Parcelable` interface. — PPartisan, Sep 13 '16 at 07:03
http://stackoverflow.com/questions/2091465/how-do-i-pass-data-between-activities-on-android — Sar, Sep 14 '16 at 04:44

score 6 · Accepted Answer · answered Sep 13 '16 at 07:26

6

When sending your ArrayList:

Intent intent = new Intent(context ,TargetActivity.class);
        intent.putParcelableArrayListExtra("Object_list", personArrayList);
        context.startActivity(intent);

When receiving your ArrayList:

ArrayList<ListItem> items = getIntent().getParcelableArrayListExtra("Object_list");

Note that this is not the same as getIntent().getExtras().getParcelableArrayList(). Currently, I believe you are incorrectly writing

Bundle extras = geIntent().getExtras();
extras.getParcelableArrayList("Object_list");

Also, ListItem, despite implementing Parcelable, does not copy all of its values. This probably isn't causing your issue but is worth keeping in mind.

answered Sep 13 '16 at 07:26

PPartisan

8,173
4
29
48

but how to get the value of url ? please check my edit when applying your code – Moudiz Sep 13 '16 at 07:40
@Moudiz As I believe you've already been told, you access the relevant index in your `ArrayList` with the `get()` method to return a `ListItem` object, to which you can call `getUrl()`. It's impossible to tell which index you want from your code however. If you just wanted to test it out, try accessing index `0` - `listItems.get(0).getUrl()`. – PPartisan Sep 13 '16 at 07:53
hi man i am still having problem in my code , can you assist me? – Moudiz Sep 13 '16 at 11:28
perfect explanation – Hiren Jul 12 '18 at 10:24

Sar · Answer 2 · 2016-09-13T07:16:11.907

1

I think you should do :

 intent.putParcelableArrayListExtra("Object_list", (ArrayList<? extends Parcelable>) personArrayList);

and get inside intended activity like :

 this.Objects= extras.getParcelableArrayList("Object_list");

Make sure that Listitem class is implementing Parcelable.

edited Sep 13 '16 at 07:16

answered Sep 13 '16 at 06:58

Sar

550
4
18

there is no `getParcelableArrayListExtra` – Moudiz Sep 13 '16 at 07:07
@Moudiz There is, it's [here](https://developer.android.com/reference/android/content/Intent.html#getParcelableArrayListExtra(java.lang.String)) in the documentation. Note you want to use `getIntent().getParcelbleArrayListExtra()`, and not `getIntent().getExtras().getParcelableArrayListExtra()` – PPartisan Sep 13 '16 at 07:15
You can use extras.getParcelableArrayList() method – Sar Sep 13 '16 at 07:15
@Sar still i get error using it `this.listObjects= extras.getParcelableArrayList("Object_list");` required lisitem found arraylist .. is it maybe problem in listobjects because its declared listitem ? – Moudiz Sep 13 '16 at 07:19
You should do this.Objects not this.listObjects – Sar Sep 13 '16 at 07:20
@sar okay... then in picasso to get the image `load(listObjects.getUrl())` how to get listobject ? – Moudiz Sep 13 '16 at 07:26
Use Objects.get(position).getUrt() for getting particular item's url from list – Sar Sep 13 '16 at 07:29
and how do i get position? – Moudiz Sep 13 '16 at 07:32
Do you want only a single ListItem in SingleObjectActivity not all the list? – Sar Sep 13 '16 at 07:35
in my scenario i want only the url passed from the intent – Moudiz Sep 13 '16 at 07:36
Then there is no need to pass the whole list of items. You should pass only the url as string. – Sar Sep 13 '16 at 07:39
@Sar later ill be sending another things. why I am not able to get the arraylist ? – Moudiz Sep 13 '16 at 07:41
You should pass only intent.putExtra("key", item.getUrl); – Sar Sep 13 '16 at 07:44
can you show me in an exmaple because i am lost now – Moudiz Sep 13 '16 at 07:53

Dipali Shah · Answer 3 · 2016-09-13T06:45:37.667

0

You may try this :

To get ArrayList from extras

this.listObjects = (Listitem) extras.getParcelable(OBJECT_LIST);

edited Sep 13 '16 at 06:45

answered Sep 13 '16 at 06:41

Dipali Shah

3,742
32
47

@Moudiz, Try now. – Dipali Shah Sep 13 '16 at 06:45
I am still getting the same error Key Object_list expected Parcelable but value was a java.util.ArrayList. – Moudiz Sep 13 '16 at 06:47
Just check that _Listitem_ implements with `Parcable` or `Serializable` @Moudiz – Piyush Sep 13 '16 at 06:48
this is the class public `class Listitem implements Parcelable {` – Moudiz Sep 13 '16 at 06:49
nop it didnt work either `this.listObjects = (Listitem) extras.getParcelableArrayList(OBJECT_LIST);` or `this.listObjects = extras.getParcelableArrayList(OBJECT_LIST);` cannot cast parcalable to listitem – Moudiz Sep 13 '16 at 06:53
When you put objects in intent it should be parcable not string. This is _personArrayList_ so you need to get in arrayList. It will be this.Objects= (ArrayList)extras.getParcelableArrayList(OBJECT_LIST); @Moudiz – Piyush Sep 13 '16 at 06:54
@Piyush sorry i didnt understand , check my edit for how i am sending them – Moudiz Sep 13 '16 at 06:55
@Piyush we can use putExtra there is nothing wrong in it. – Dipali Shah Sep 13 '16 at 06:58
@Moudiz Now you got it... I think – Piyush Sep 13 '16 at 07:00

score 0 · Answer 4 · answered Sep 13 '16 at 07:54

0

1.Make you model class i.e. ListItem Parcelable

2. in second step,

Bundle bundle = new Bundle(); bundle.putParcelableArrayList("list",list); intent.putExtras(bundle);

3. ArrayList list = bundle.getParcelableArrayList("list");

answered Sep 13 '16 at 07:54

rushi

277
2
8

score 0 · Answer 5 · answered Jul 09 '21 at 21:04

0

In sending intent code intent.putExtra("Object_list", personArrayList); replace with this intent.putParcelableArrayListExtra("Object_list", personArrayList); will solve problem

answered Jul 09 '21 at 21:04

Mohd Qasim

896
9
20

java.util.ArrayList cannot be cast to android.os.Parcelable. key expected Parcelable but value was a java.util.ArrayList

5 Answers5