Save object while orientation change

Question

How to save Object while orientation change, since onRetainNonConfigurationInstance and getLastNonConfigurationInstance are deprecated. And which cannot me used with compatibility package android-support-v4.jar FragmentActivity, where it shows Cannot override the final method from FragmentActivity

developer site say

Use the new Fragment API setRetainInstance(boolean) instead;

But I don't know how to save a custom object using setRetainInstance

My scenario :
In my activity I have a AsyncTask with progress dialog. Here I need to handle orientation change.
For that I got a very good answer from Mark Murphy, CommonsWare
background-task-progress-dialog-orientation-change-is-there-any-100-working,
with sample project

Since I'm using compatibility package android-support-v4.jar, FragmentActivity, I can't override onRetainNonConfigurationInstance
Cannot override the final method from FragmentActivity

Is there any alternative method for saving my custom object?

EDIT: I cannot make my AsyncTask task Parcelable (If I'm not wrong) since it use interface, context etc. My AsyncTask

 public class CommonAsyncTask extends AsyncTask<Object, Object, Object>  {
        Context context;
        AsyncTaskServices callerObject;
        ProgressDialog progressDialog;
        String dialogMessag ; 
    ................

I'm looking, is there any alternatives for onRetainNonConfigurationInstance method, which save an object completely while orientation change and later can be retrieve using getLastNonConfigurationInstance

Answer 1

You can use onRetainCustomNonConfigurationInstance.

Use this instead of onRetainNonConfigurationInstance(). Retrieve later with getLastCustomNonConfigurationInstance().

Answer 2

There are two alternatives:

1. Use a Loader. The FragmentActivity will take care of saving/restoring its state when re-creating.
2. Use a fragment without a view and call setRetainInstance(true) on it. There is an example of this in the compatibility library's source, FragmentRetainInstanceSupport or some such.

Answer 3

When your Fragment is paused it will call this method:

@Override
public void onSaveInstanceState(Bundle outState) {
    // Add variable to outState here
    super.onSaveInstanceState(outState);
}

The variable outState will then be fed into the onCreate() method when the Fragment restarts.

You can save any data that is a basic type or implements Parcelable interface