Utility class for writing Parcelables into a Bundle (ExampleActivity.java uses the Parceler library: https://github.com/johncarl81/parceler).

BundleUtil.java

import android.os.Bundle;
import android.os.Parcelable;

/**
 * Utility class for {@link android.os.Bundle}.
 * Created by chris on 8/6/14.
 */
public class BundleUtil {

    private static final String EXTRA_PARCELABLE_COUNT = "parcelable_count";

    /**
     * Creates a {@link Bundle} given a list of {@link android.os.Parcelable} objects. This is a
     * convenience method if all the values in the Bundle are Parcelables.
     *
     * @param args the {@link android.os.Parcelable} objects.
     * @return the resulting {@link Bundle}.
     */
    public static Bundle createBundle(Parcelable... args) {
        final Bundle bundle = new Bundle();

        // Put Parcelable in bundle
        final int size = args.length;
        for (int i = 0; i < size; i++) {
            bundle.putParcelable(String.valueOf(i), args[i]);
        }

        // Put size in bundle (needed when using
        bundle.putInt(EXTRA_PARCELABLE_COUNT, size);

        return bundle;
    }

    /**
     * NOTE: This method is used in conjunction with {@link #createBundle(android.os.Parcelable...)}.
     *
     * Returns an array of Parcelable objects contained within <code>bundle</code>. The returned
     * array is returned in the same order they are passed in {@link #createBundle(android.os.Parcelable...)}.
     *
     * @param bundle the bundle
     * @return an array of Parcelables contained in <code>bundle</code>.
     */
    public static Parcelable[] getParcelablesFromBundle(Bundle bundle) {

        // Count how many Parcelable values in the bundle
        final int numOfParcelables = bundle.getInt(EXTRA_PARCELABLE_COUNT);

        // Get list of Parcelables
        final Parcelable[] parcelables = new Parcelable[numOfParcelables];
        for (int i = 0; i < numOfParcelables; i++) {
            parcelables[i] = bundle.getParcelable(String.valueOf(i));
        }

        return parcelables;
    }

}

ExampleActivity.java

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import com.sincerely.ink.ui.fragments.CheckoutFragment;
import com.sincerely.lib.model.addressbook.Contact;
import com.sincerely.lib.model.product.Card;
import com.sincerely.lib.network.model.BillingInfoResponse;
import java.util.List;
import org.parceler.Parcels;

/**
 * Created by chris on 8/6/14.
 */
public class ExampleActivity extends Activity {

    private static final String EXTRA_BUNDLE = "extra_bundle";

    @Override public void onCreate(Bundle savedInstanceState) {
        // Get parcelables
        final Bundle bundle = getIntent().getBundleExtra(EXTRA_BUNDLE);
        final Parcelable[] parcelables = BundleUtil.getParcelablesFromBundle(bundle);
        final BillingInfoResponse billingInfoResponse = Parcels.unwrap(parcelables[0]);
        final Card card = Parcels.unwrap(parcelables[1]);
        final List<Contact> selectedContacts = Parcels.unwrap(parcelables[2]);
    }

    public static void launch(Activity activity,
                              BillingInfoResponse billingInfo,
                              Card card,
                              List<Contact> selectedContacts) {
        final Intent intent = new Intent(activity, ExampleActivity.class);
        intent.putExtra(EXTRA_BUNDLE,
                        BundleUtil.createBundle(Parcels.wrap(billingInfo),
                                                Parcels.wrap(card),
                                                Parcels.wrap(selectedContacts)));
        activity.startActivity(intent);
    }
}