How to display progress screen while restarting app?

I do app restart with the following intent:

Intent restartIntent = new Intent(context, MainActivity.class);
restartIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
restartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(restartIntent);

But there is "white" screen while restarting.

I want to display custom screen instead, while restarting app.

Do you know how to achieve this?

from How to display progress screen while restarting app?