如何實現本地通知badgenumber自動增加

實現自動增加前提是非重復的本地通知。

幾個要點：

1.在你自定義的的注冊本地通知方法內，新的通知badgenumber需要通過當前存在的scheduled本地通知數量來確定。(通過后面renumberBadgesOfPendingNotifications方法也能重新分配該badgenumber)

let badgeNbr = UIApplication.sharedApplication().scheduledLocalNotifications?.count ?? 0
let nextBadgeNbr = badgeNbr + 1
yourLocalNotification.applicationBadgeNumber = nextBadgeNbr

2.當本地通知被你點擊處理/進入APP的時候，你需要重新分配scheduled的本地通知。

func renumberBadgesOfPendingNotifications() {
        UIApplication.sharedApplication().applicationIconBadgeNumber = 0

        let pendingNotifications = UIApplication.sharedApplication().scheduledLocalNotifications
        
        if (pendingNotifications?.count > 0) {
            
            UIApplication.sharedApplication().cancelAllLocalNotifications()
            
            print(UIApplication.sharedApplication().scheduledLocalNotifications)
            
            let badgeNbr = 0
            
            for noti in pendingNotifications! {
                let temp = badgeNbr + pendingNotifications!.indexOf(noti)! + 1
                noti.applicationIconBadgeNumber = temp
                
                // schedule 'again'
                UIApplication.sharedApplication().scheduleLocalNotification(noti)
            }
        }
    }

3.你可能會想到renumberBadgesOfPendingNotifications()假如程序內新增了本地通知，那么獲得的notification并不是按照時間排序的，因而最好再加一個排序。

func renumberBadgesOfPendingNotifications() {

        UIApplication.sharedApplication().applicationIconBadgeNumber = 0
        
        let notifications = UIApplication.sharedApplication().scheduledLocalNotifications
        
        if (notifications?.count > 0) {
            
            let pendingNotifications = notifications?.sort({
                return $0.fireDate!.compare($1.fireDate!) == NSComparisonResult.OrderedDescending ? false : true
            })
            
            UIApplication.sharedApplication().cancelAllLocalNotifications()
         
            let badgeNbr = 0
            
            for noti in pendingNotifications! {
                let temp = badgeNbr + pendingNotifications!.indexOf(noti)! + 1
                noti.applicationIconBadgeNumber = temp
                
                // schedule 'again'
                UIApplication.sharedApplication().scheduleLocalNotification(noti)
            }
        }
    }

然后把上面方法加入
**func applicationDidBecomeActive(application: UIApplication) **

暫時沒遇到問題。。

原問題鏈接