推送通知更改AppIcon的徽章

Question

I am working on an app that can receive Push-Notifications . When a notification is received, I need to change the number of the icon's badge and increment it. Those notifications are stored in a UITableView in my app. When a row is pressed, this means that the notification has been read so I want to decrement the badge. I am new to push notifications and badges and I really couldn't find any efficient way to do it

any solutions ?

Thank you.

Answer 1

You can't automatically increment a badge from a notification. Your notification payload must contain the badge property that will be set to the exact value you want for your badge.
To set the badge value from within your app, you can use:

[[UIApplication sharedApplication] setApplicationIconBadgeNumber:someInteger];

If you want to increment the badge by one every time you receive a notification, you need to keep track of your user's badge server-side.
For example, if you send 3 notifications to an user, you will have a badge column in your database for this user with 3 as a value. If the user opens his app and taps one of the notifications, your app will have to set the badge icon to 2 and send a request to your server to decrease the database value to 2.

TL;DR: There is no such thing as a badge:+1 or badge:autoincrement in a notification's payload. You have to keep track of the badge's value server-side.