xamarin.ios 本地通知推送

由于ios10版本以后UILocalNotification被标为弃用了，所以要添加新的本地通知推送功能，下面提供一些代码参考。

一、先在AppDelegate.cs上注册本地通知推送功能。

  public override bool FinishedLaunching(UIApplication app, NSDictionary options)
         {
             global::Xamarin.Forms.Forms.Init();
             global::ZXing.Net.Mobile.Forms.iOS.Platform.Init();
             Renderers.KeyboardOverlapRenderer.Init();

             if (UIDevice.CurrentDevice.CheckSystemVersion(, ))
             {
                 //Notification framework.
                 UNUserNotificationCenter.Current.RequestAuthorization(UNAuthorizationOptions.Alert | UNAuthorizationOptions.Badge | UNAuthorizationOptions.Sound, (approved, err) =>
                 {
                     // Handle approval
                 });

                 //Get current notification settings.
                 UNUserNotificationCenter.Current.GetNotificationSettings((settings) =>
                 {
                     var alertsAllowed = (settings.AlertSetting == UNNotificationSetting.Enabled);
                 });
                 UNUserNotificationCenter.Current.Delegate = new UserNotificationCenterDelegate();
             }
 ｝

同时用到一个处理函数，代码如下：

 public class UserNotificationCenterDelegate : UNUserNotificationCenterDelegate
     {
         #region Constructors
         public UserNotificationCenterDelegate()
         {
         }
         #endregion

         #region Override Methods
         public override void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
         {
             // Do something with the notification
             Console.WriteLine("Active Notification: {0}", notification);

             // Tell system to display the notification anyway or use
             // `None` to say we have handled the display locally.
             completionHandler(UNNotificationPresentationOptions.Alert | UNNotificationPresentationOptions.Sound);
         }
         #endregion
     }

通知处理函数

二、定义调用本地通知推送的函数，如果是xamarn.From可以写成一个Dependencies方法来调用。

 public void ShowNotification(string strNotificationTitle,
                                 string strNotificationSubtitle,
                                 string strNotificationDescription,
                                 string strNotificationIdItem,
                                 string strDateOrInterval,
                                 int intervalType,
                                 string extraParameters)
         {
             //intervalType: 1 - set to date | 2 - set to interval

             //Object creation.
             var notificationContent = new UNMutableNotificationContent();

             //Set parameters.
             //notificationContent.Title = "Mesince";
             notificationContent.Subtitle = strNotificationSubtitle;
             notificationContent.Body = strNotificationDescription;
             //notificationContent.Badge = 1;
             notificationContent.Badge = Int32.Parse(strNotificationIdItem);
             notificationContent.Sound = UNNotificationSound.Default;

             //Set date.
             //DateTime notificationContentDate = Convert.ToDateTime(strDateOrInterval);
             DateTime notificationContentDate = DateTime.Now.AddMilliseconds();

             NSDateComponents notificationContentNSCDate = new NSDateComponents();
             notificationContentNSCDate.Year = notificationContentDate.Year;
             notificationContentNSCDate.Month = notificationContentDate.Month;
             notificationContentNSCDate.Day = notificationContentDate.Day;
             notificationContentNSCDate.Hour = notificationContentDate.Hour;
             notificationContentNSCDate.Minute = notificationContentDate.Minute;
             notificationContentNSCDate.Second = notificationContentDate.Second;
             notificationContentNSCDate.Nanosecond = (notificationContentDate.Millisecond * );

             //Set trigger and request.
             var notificationRequestID = Guid.NewGuid().ToString();
             UNNotificationRequest notificationRequest = null;
             //在某月某日某时触发
             if (intervalType == )
             {
                 var notificationCalenderTrigger = UNCalendarNotificationTrigger.CreateTrigger(notificationContentNSCDate, false);

                 notificationRequest = UNNotificationRequest.FromIdentifier(notificationRequestID, notificationContent, notificationCalenderTrigger);
             }
             else
             {
                 //一定时间后触发
                 var notificationIntervalTrigger = UNTimeIntervalNotificationTrigger.CreateTrigger(Int32.Parse(strDateOrInterval), false);

                 notificationRequest = UNNotificationRequest.FromIdentifier(notificationRequestID, notificationContent, notificationIntervalTrigger);
             }

             //Add the notification request.
             UNUserNotificationCenter.Current.AddNotificationRequest(notificationRequest, (err) =>
             {
                 if (err != null)
                 {
                     System.Diagnostics.Debug.WriteLine("Error : " + err);
                 }
             });
         }

定义调用方法

方法中定义了两种方式，只实现了一种。

三、上面是Ios 10以上版本的方法，旧版本的方法在此也放出来：

 if (UIDevice.CurrentDevice.CheckSystemVersion(, ))
                 {
                     ShowNotification(Title, Title, Content, "", "2017-28-02 08:30:00", , "");
                 }
                 else
                 {
                     var settings = UIUserNotificationSettings.GetSettingsForTypes(UIUserNotificationType.Alert | UIUserNotificationType.Sound, null);
                     UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);

                     UILocalNotification notification = new UILocalNotification();
                     notification.TimeZone = NSTimeZone.DefaultTimeZone;
                     notification.AlertLaunchImage = "ico.png";
                     notification.FireDate = NSDate.FromTimeIntervalSinceNow();
                     notification.AlertAction = AppResource.提示;//获取得访问消息中心权限对话框标题
                     notification.AlertTitle = Title;
                     notification.AlertBody = Content;
                     if (CurrentApp.HasSound)
                     {
                         notification.SoundName = UILocalNotification.DefaultSoundName;
                     }
                     if (CurrentApp.HasVibrate)
                     {
                     }
                     //判断是否开启新邮件提醒
                     if (CurrentApp.NewMialRemind)
                     {
                         //UIApplication.SharedApplication.ScheduleLocalNotification(notification);
                         //立即触发一个通知
                         UIApplication.SharedApplication.PresentLocalNotificationNow(notification);
                     }
                 }

IOS 10 以下版本方法