Passing arraylist of objects between activities

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)

回答1:

You should make your Song class implement Parcelable.

回答2:

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

回答3:

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\");

回答4:

     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.