Android. How to make a full-screen dialog correctly?

Question

Android

Here is an example of a dialog from Google's design guidelines:

Is this a normal Activity with a modified HomeAsUpIndicator, or is there a ready-made solution?

Answer 1

This is a normal Activity

Answer 2

Everything is connected to you. It's just that in the 3rd version there is no $.browser object, which is what the console writes to you about.