http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12
iOS developers love to imagine users of their awesome app using the app all day,every day. Unfortunately,the cold hard truth is that users will sometimes have to close the app and perform other activities. Laundry doesn’t fold itself,you know :]
Happily,push notifications allow developers to reach users and perform small tasks even when users aren’t actively using an app!
Push notifications have become more and more powerful since they were first introduced. In iOS 9,push notifications can:
- Display a short text message
- Play a notification sound
- Set a badge number on the app’s icon
- Provide actions the user can take without opening the app
- Be silent,allowing the app to wake up in the background and perform a task
This push notifications tutorial will go over how push notifications work,and let you try out their features…
