How do I create a transparent Activity on Android?

Question

I want to create a transparent Activity on top of another activity.

How can I achieve this?

Answer 1

All those answers might be confusing, there is a difference between Transparent activity and None UI activity.

Using this:

android:theme="@android:style/Theme.Translucent.NoTitleBar"

Will make the activity transparent but will block the UI.

If you want a None UI activity than use this:

android:theme="@android:style/Theme.NoDisplay"