Parceable Arraylist of objects

Question

I\'m trying to pass an ArrayList of Person Objects from the MainActivity to SecondActivity to print the details of the person in a custom listView adapter.

The applicati

Answer 1

ArrayList does not implements Parcelable, but it implements Serializable, so you can't use getParcelableExtra to receive the data, you must use getSerializableExtra instead.

ArrayList person = (ArrayList) i.getSerializableExtra("personObject");

Person class must implements Serializable too, here is the code example:

Person implements Serializable{
   private static final long serialVersionUID = 0L;
   String id;
   String name;
}

Update:

Another solution: use putParcelableArrayListExtra and getParcelableArrayListExtra.

First activity:

ArrayList list = new ArrayList();

public void onButtonClick() {
    Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
    intent.putParcelableArrayListExtra("personObject", list);
    startActivity(intent);
}

Second Activity:

ArrayList person = (ArrayList) i.getParcelableArrayListExtra("personObject");

Note: Parcelable is faster than Serializable, so the second solution is better if you want to pass a lot of data.