The Basics
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Working with Menus
There are two kinds of Android menus: Options menus and Context menus.
Options menus
Options menus contain tools that apply to the activities of the current
screen or application, not to any specific item on the screen. To open the
available options menu, touch the Menu Key
. Not all applications have
Options menus; if you touch the Menu Key
on a screen that has no
Options menu, nothing will happen.
Context menus
Context menus contain options that apply to a specific item on the screen.
To open a Context menu, touch and hold an item on the screen. Not all
items have Context menus. If you touch and hold an item that has no
Context menu, nothing will happen.