As one of the major updates to the IOS5, the Notification Center can place all the alerts in a user's iOS device in one location, greatly facilitating user viewing and management. If a user receives a new e-mail message, a text message, or a request to add a friend, whether under any interface (including a full screen application, such as games), users can "pull down" from the top of the screen, and the notification center will be "pulled down", where the user can view all notices. So Apple's introduction to iOS5 says the notification Center is the perfect way to keep abreast of the latest life information.
Scenarios in which notifications may occur
Typically in the following scenario, the iOS application notifies the user that something interesting has happened:
1. Received a message
2. Something is about to happen
3. New data available for download
4. The State of certain things has changed
Four types of notification for IOS5
1. Banner (Banner)
A banner notification is a new feature that appears in IOS5, a bar that is displayed at the top of the screen and automatically disappears after a few seconds. A banner notice will display the program's small icon (low split screen display 29x29 icon, high split screen display 58x58 icon), program name and notification content. Small icons help users to see at a glance which application is reminding them.
2. Reminder (Alert)
Reminder notifications do not automatically disappear and require the user to interact with them to close. The designer needs to design the details of the notice, and sometimes the action button (which is discussed later) to design title. The background style of the entire reminder, including the buttons inside the style, is immutable, so designers and developers should not be creative here. Android because of its openness, we can use our own designed controls, and iOS may be doing this to keep the UI style consistent.