Android: Is each UI thread in an Activity a separate thread?

Question

In an Android application with multiple actions, does each UI thread work with a separate thread, or is it actually the same thread (for example, a global UI thread)?

Answer 1

Each application has one user interface thread, which is used to launch the application that is in the foreground.

There is additional information here:

http://developer.android.com/guide/topics/fundamentals/processes-and-threads.html

http://android-developers.blogspot.co.il/2009/05/painless-threading.html

Answer 2

, Android- .