Android's main menus are the Android Option Menus. They can be used for things like settings, searching, and deleting items. The Show Action property determines when and how this item appears as an action item in the app bar.
An Option Menu in Android is a collection of an application's major options from which users can choose one to execute a task. On the right side of the App Bar is the Option Menu.
The main collection of menu choices for an activity is the options menu. It's where you should put actions like "Search," "Compose email," and "Settings" that have a worldwide influence on the app.
Icon pictures must be stored in the res/drawable directory. On the choice menu, the android:icon element is used to display the icon. The string information can be written in the strings.xml file.
You can access your phone's settings in one of two ways. Swipe down from the top of your phone's display to reveal the notification bar, then press on the top right account symbol, then Settings. Alternatively, in the lower middle of your home screen, hit the "all apps" app tray icon.
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