Passing arraylist of objects between activities

Question

I am trying to pass an arraylist of objects between two activities, but my app crushes at the second activity. Can someone help me solve this problem...

Here is my code from my first activity:

Intent i = new Intent();
Bundle b = new Bundle();
b.putParcelableArrayList("songs",(ArrayList<? extends Parcelable>) albumsArray.get(position).getSongs());
Log.v("--", "OK");
i.putExtras(b);
i.setClass(LatestAlbums.this, AlbumDetails.class);
startActivity(i);

And code from the second activity:

songs=new ArrayList<Songs>();
Bundle b = this.getIntent().getExtras();
if(b!=null)
    songs = b.getParcelable("songs");
Log.v("--", songs.size()+"");

And my logcat output:

04-03 16:37:03.513: E/AndroidRuntime(6576): FATAL EXCEPTION: main
04-03 16:37:03.513: E/AndroidRuntime(6576): java.lang.RuntimeException: Parcel: unable to marshal value com.musicapp.objects.Songs@419489e8
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Parcel.writeValue(Parcel.java:1137)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Parcel.writeList(Parcel.java:524)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Parcel.writeValue(Parcel.java:1097)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Parcel.writeMapInternal(Parcel.java:493)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Bundle.writeToParcel(Bundle.java:1612)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Parcel.writeBundle(Parcel.java:507)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.content.Intent.writeToParcel(Intent.java:6147)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1613)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1379)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.app.Activity.startActivityFromChild(Activity.java:3458)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.app.Activity.startActivityForResult(Activity.java:3210)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:817)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.app.Activity.startActivity(Activity.java:3297)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at com.outsourcefarm.musicagratis.activities.LatestAlbums$4$1.onItemClick(LatestAlbums.java:232)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.widget.AdapterView.performItemClick(AdapterView.java:292)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.widget.AbsListView.performItemClick(AbsListView.java:1058)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.widget.AbsListView$PerformClick.run(AbsListView.java:2514)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.widget.AbsListView$1.run(AbsListView.java:3168)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Handler.handleCallback(Handler.java:605)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Handler.dispatchMessage(Handler.java:92)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.os.Looper.loop(Looper.java:137)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at android.app.ActivityThread.main(ActivityThread.java:4440)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at java.lang.reflect.Method.invokeNative(Native Method)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at java.lang.reflect.Method.invoke(Method.java:511)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
04-03 16:37:03.513: E/AndroidRuntime(6576):     at dalvik.system.NativeStart.main(Native Method)

`public class Song implements Parcelable {...}` . http://developer.android.com/reference/android/os/Parcelable.html — Ovidiu Latcu, Apr 03 '13 at 14:52
@OvidiuLatcu yes that is the answer. Could you post your answer for me to accept it — Darko Petkovski, Apr 03 '13 at 15:17

score 22 · Answer 1 · edited May 23 '17 at 11:47

22

You try the below

intent.putParcelableArrayListExtra("key", ArrayList<T extends Parcelable> list);
startActivity(intent);

Retrieve it

getIntent().getParcelableArrayListExtra("key");

Pass arraylist of user defined objects to Intent android. Check the answer by Sajmon

According to the comments made by Sajmon, Song class has to implement Parcelable

edited May 23 '17 at 11:47

Community

1
1

answered Apr 03 '13 at 14:51

Raghunandan

132,755
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yes this works :} but most likely author's `Song` class does not implement `Parcelable`. – Simon Dorociak Apr 03 '13 at 15:27
@Sajmon the wrapping arraylist that you suggested for another question does not work in this case? – Raghunandan Apr 03 '13 at 15:43
Raghunandan it works this what i wrote: `ArrayList list` i wrote it "generally" `-->` second paramater of `putParcelableArrayListExtra()` must be `ArrayList` where `T` implements `Parcelable` so it works for sure also for `ArrayList` but `Song` class must implements `Parcelable` interface. – Simon Dorociak Apr 03 '13 at 15:50
So Song class has to implement 'Parcelable' – Raghunandan Apr 03 '13 at 15:56
Can I pass arrayList like you do in Java(by using objects )? – Amit0191 Aug 27 '15 at 17:26
@Amit0191 you mean list of objects. Yes you can do that provided you have your model class implements Parcelable. – Raghunandan Aug 28 '15 at 09:18
No I didn't mean list of Objects. – Amit0191 Aug 29 '15 at 05:54
@Raghunandan Can I pass ArrayList (between activities)like we do between two classes(Class A has arrayList. Create an instance in Class B of class A and use it to access the arrayList)? What about if one class is activity and the other is not? Thank you. – Amit0191 Aug 29 '15 at 05:57
@Amit0191 you can pass arraylist between activities cause arraylist implements serializable. You should never create an instance of activity class. You only declare it in manifest. its the job of android to do that. – Raghunandan Aug 29 '15 at 06:18

score 12 · Accepted Answer · answered Apr 03 '13 at 15:49

12

You should make your Song class implement Parcelable.

answered Apr 03 '13 at 15:49

Ovidiu Latcu

71,607
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score 8 · Answer 3 · answered Nov 21 '16 at 09:18

8

Intent intent=new Intent(ActivityFrom.this,ActivityTo.class);
intent.putExtra("StringKey",arrayList);
startActivity(intent);

and to retrieve

ArrayList<String> myList = (ArrayList<String>) getIntent().getSerializableExtra("StringKey");

answered Nov 21 '16 at 09:18

Guru raj

806
11
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Thank you for response, In order to pass String array this is a easiest method i found, if you have better one please post that Mr. Vinil Chandran(sir) – Guru raj Jun 22 '17 at 15:33
2

First of all the question is about object not the string. For passing passing string arraylist //////////// Intent intent = new Intent(getContext(),MainActivity.class); intent.putStringArrayListExtra("KEY",stringArrayList); startActivity(intent); ///////////////// ArrayList stringArrayList = getIntent().getStringArrayListExtra("KEY"); – Vinil Chandran Jun 22 '17 at 18:57

score 3 · Answer 4 · edited May 23 '17 at 11:47

3

     i.setClass(LatestAlbums.this, AlbumDetails.class);
     i.putStringArrayListExtra("list", your song list);
     startActivity(i);

To get the array list in activity.

ArrayList<String> fetchList= new ArrayList<String>();
fetchList=  getIntent().getStringArrayListExtra("list");

Hope this will help you.

For more reference use this link.

edited May 23 '17 at 11:47

Community

1
1

answered Apr 03 '13 at 14:47

Nirmal

2,340
21
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score 2 · Answer 5 · answered Feb 16 '19 at 09:45

Refers to this question. I hope this example helps you.

1. Your Song class should be implements Parcelable Class

public class Song implements Parcelable { 
//Your setter and getter methods
}

2. Put your arraylist to putParcelableArrayListExtra()

public class ActivityA extends AppCompatActivity {
ArrayList<Song> songs;

@Override
protected void onCreate(Bundle savedInstanceState) {
button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            startActivity(new Intent(getApplicationContext(), ActivityB.class)
            .putParcelableArrayListExtra("songs", (ArrayList<? extends Parcelable>) songs));
        }
    });
}

3. In the ActivityB

public class ActivityB extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    Intent intent = getIntent();
    final ArrayList<Song> songs = intent.getParcelableArrayListExtra("songs");

    //Check the value in the console
    buttonCheck.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            for (Song value : songs) {
                System.out.println(value.getTitle());
            }
        }
    });
}

score 0 · Answer 6 · answered Apr 14 '20 at 23:39

You can make the Songs class implement Serializable like this way.

public class Songs implements Serializable{ // your code here }.

In Activity One

Intent intent =  new Intent(MainActivity.this,Main2Activity.class);
Bundle bundle = new Bundle();
bundle.putSerializable("Songs",arrSongs); //where arrSongs is object of  ArrayList<Songs>

intent.putExtras(bundle);
startActivity(intent);

In SecondActivity where you want to retrieve the ArrayList object

 Bundle bundle =  getIntent().getExtras();
 private ArrayList<Songs> items;
 items = (ArrayList<Songs>)bundle.getSerializable("Songs");

Maybe should use class `Parcelable` instead of `Sertializable` — aolphn, Apr 15 '20 at 01:22

Passing arraylist of objects between activities

6 Answers6

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