What is a Window in Android?
I thought the top-most level in Android is called Activity, which is the screen you see.
Can someone tell me what a Window in Android is? do we just have one or multiple of them.
The Activity is what you would call a Window.
Technically speaking, the Activity creates the Window for you.
You can have many of them, but normally not synchronously. To ask for additional information you can call a Dialog, or fire an Intent to another Activity.
For more information visit this link.