Passing data through intent using Serializable

Try to pass the serializable list using Bundle.Serializable:

Bundle bundle = new Bundle();bundle.putSerializable("value", all_thumbs);intent.putExtras(bundle);

And in SomeClass Activity get it as:

Intent intent = this.getIntent();Bundle bundle = intent.getExtras();List<Thumbnail> thumbs=               (List<Thumbnail>)bundle.getSerializable("value");

This code may help you:

public class EN implements Serializable {//... you don't need implement any methods when you implements Serializable}

Putting data. Create new Activity with extra:

EN enumb = new EN();Intent intent = new Intent(getActivity(), NewActivity.class);intent.putExtra("en", enumb); //second param is SerializablestartActivity(intent);

Obtaining data from new activity:

public class NewActivity extends Activity {    private EN en;    @Override    public void onCreate(Bundle savedInstanceState) {        try {            super.onCreate(savedInstanceState);            Bundle extras = getIntent().getExtras();            if (extras != null) {                en = (EN)getIntent().getSerializableExtra("en"); //Obtaining data             }//...

I extended ρяσѕρєя K's answer to make the code full and workable. So, when you finish filling your 'all_thumbs' list, you should put its content one by one into the bundle and then into the intent:

Bundle bundle = new Bundle();for (int i = 0; i<all_thumbs.size(); i++)bundle.putSerializable("extras"+i, all_thumbs.get(i));intent.putExtras(bundle);

In order to get the extras from the intent, you need:

Bundle bundle = new Bundle();List<Thumbnail> thumbnailObjects = new ArrayList<Thumbnail>();// collect your Thumbnail objectsfor (String key : bundle.keySet()) {thumbnailObjects.add((Thumbnail) bundle.getSerializable(key));}// for example, in order to get a value of the 3-rd object you need to:String label = thumbnailObjects.get(2).get_label();

Advantage of Serializable is its simplicity. However, I would recommend you to consider using Parcelable method when you need transfer many data, because Parcelable is specifically designed for Android and it is more efficient than Serializable. You can create Parcelable class using:

1. an online tool - parcelabler
2. a plugin for Android Studion - Android Parcelable code generator