onPrepareSupportNavigateUpTaskStack when overriding Up navigation not called

Question

When navigating up my parent activity requires some extras. But I'm not sure how can I supply it. AppCompatActivity's documentation states:

If any activity * along the parent chain requires extra Intent arguments, the Activity subclass * should override the method {@link #onPrepareSupportNavigateUpTaskStack(android.support.v4.app.TaskStackBuilder)} * to supply those arguments.

That's what I have so far.

AndroidManifest.xml

    <activity
        android:name=".user.offers.detail.OfferDetailActivity"
        android:theme="@style/AppTheme.NoActionBar"
        android:parentActivityName=".user.offers.master.OffersMasterActivity"
        android:screenOrientation="portrait">
    </activity>

There's not much information on how to override onPrepareSupportNavigateUp, so here's my best guess (in 'child' activity):

override fun onPrepareSupportNavigateUpTaskStack(builder: TaskStackBuilder) {
    builder.editIntentAt(builder.intentCount - 1)?.apply {
        putExtra(OffersMasterActivity.CAT_KEY_EXTRA, catKey)
        putExtra(OffersMasterActivity.CAT_NAME_EXTRA, catName)
        putExtra(OffersMasterActivity.CAT_PICPATH_EXTRA, picPath)
    }
}

But the method is never called to figure out if my implementation valid.

Any help would be greatly appreciated!

Answer 1

For onPrepareSupportNavigateUp to be called, supportShouldUpRecreateTask should be overridden first returning true.