Apple 2 manual Notification Alerts, 16A notification alert tells the user something important

C H A P T E R 2

Container Views

In the absence of a take-action button, a Close box means simply, “I’m done with this task.”

Close boxes and text buttons are covered in Chapter 3, “Controls.” Input fields follow the guidelines given in Chapter 6, “Data Input.”

Notification Alerts

An application uses a particular type of auxiliary view, a notification alert, to provide messages about error conditions, warn users about potentially undesirable situations or actions, and announce alarms. Use a notification alert to convey information that is useful to the user but doesn’t present any threat such as a loss of data.

The notification alert’s wavy black border visually distinguishes it from operational slips. A user responds to a notification alert by tapping its Close box, thereby acknowledging the message and putting away the slip. Figure 2-16 shows a notification alert.

Figure 2-16A notification alert tells the user something important

Some notification alerts have a Snooze button, which enables a user to temporarily dismiss the alert. The alert reappears after an interval of time chosen by the user. For example, this is the type of notification alert the built-in Date Book application uses for its reminder alarms. Figure 2-17 shows a notification alert with a Snooze button (for more information, see “Alarms” on page 8-4.).

Auxiliary Views 2-17