Exam 2 : Menus and Preferences
Develop an application using the following requirements:
- The application will have three activities - main screen, about screen and help screen
- All activities will display a common options menu or app bar.
- The app bar should consist of three items
- Settings - use to save a value that will be used to save the name to display on the main activity.
- About - use to display the about activity
- Help - use to display the help activity
- The main activity should
- Display a label (TextView) that shows the text "Name"
- Display a text field (EditText) that displays a name if stored in preferences, or allow user to type in any name. Any value typed in need not be saved across sessions.
- Should not be displayed as an item in the app bar.
- Should display the latest saved value for the name from the preferences - when user changes the stored value via the Settings menu, the value displayed in the text field should be updated.
- The about activity should
- Display a few lines of random text in a TextView.
- The app bar menu item corresponding to this activity should be disabled when this activity is on screen.
- The help activity should have the same features as the about activity (display random lines of text and the corresponding menu item should be disabled)