Question

我在表格视图中有一个单元格，其中有一个用于安排通知的按钮。是否可以删除或取消该特定单元格的通知而不影响其他单元格安排的通知？我想使用相同的按钮删除或取消特定通知。如果是这样，请帮我提供一个示例快速代码。

@IBAction func setNotification(sender: UIButton!) {

        cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: sender.tag, inSection: 0)) as! CustomTableViewCell
        if sender.selected {

            sender.selected = false
             }else {
currentRegion = CLCircularRegion(center: CLLocationCoordinate2D(latitude: latitude ,longitude:longitude), radius: radius, identifier: identifier)
regionMonitor()
            manager.stopUpdatingLocation()
            sender.selected = true } }

didEnterRegion()

的代码

func locationManager(manager: CLLocationManager!, didEnterRegion region: CLRegion!) {
            localNotification.regionTriggersOnce = true
            localNotification.alertBody = "you have reached"
            UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
            NSLog("Entering region") }

Answer 1

您可以为UILocalNotification中的每个userInfo保存一个唯一标识符，然后循环显示这些标识符以查找唯一ID并将其删除：

var app:UIApplication = UIApplication.shared
    if let localNotifications = app.scheduledLocalNotifications {
        for oneEvent in localNotifications {
            var notification = oneEvent as UILocalNotification
            if let userInfoCurrent = notification.userInfo as? [String:AnyObject],
                let uid = userInfoCurrent["uid"] as? String {
                if uid == uidtodelete {
                    //Cancelling local notification
                    app.cancelLocalNotification(notification)
                    break
                }
            }
        }
    }

已更新至 Swift 3 并已改进以防止nil崩溃

Answer 2

您可以使用NSUserDefaults保存设置。

启用或禁用didSelectRowAtIndexPath方法中的设置：

NSUserDefaults.standardUserDefaults().setBool(true, forKey: "ShouldShowRegionEnteredNotification") //true or false

然后您可以检查设置：

func locationManager(manager: CLLocationManager!, didEnterRegion region: CLRegion!) {

    if (NSUserDefaults.standardUserDefaults().boolForKey("ShouldShowRegionEnteredNotification"))
    {
        localNotification.regionTriggersOnce = true
        localNotification.alertBody = "you have reached"
        UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
        NSLog("Entering region")
    }
}

如何在swift中取消特定的UILocalNotification？

2 个答案: