How can I schedule a local (no server) PUSH notification (not an alert) to fire from my app? I simply want to schedule a notification from my app and have it fire at the given time in the notification center. I have tried to use LocalNotifications but they only seem to work if the app is open, and only update the badge if it is closed. I also see no way of sending push notifications unless you use a server.
Currently I can schedule a LocalNotification and have an alert pop up, but I would like this to work when the app is closed, and instead of an alert, I would like a push notification that pops up at the top.
Notification permission should be requested as soon as the app launches by adding the following code to the FinishedLaunching method of the AppDelegate and setting the desired notification type (UNAuthorizationOptions):
...
using UserNotifications;
...
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
....
//after iOS 10
if(UIDevice.CurrentDevice.CheckSystemVersion(10,0))
{
UNUserNotificationCenter center = UNUserNotificationCenter.Current;
center.RequestAuthorization(UNAuthorizationOptions.Alert | UNAuthorizationOptions.Sound | UNAuthorizationOptions.UNAuthorizationOptions.Badge, (bool arg1, NSError arg2) =>
{
});
center.Delegate = new NotificationDelegate();
}
else if(UIDevice.CurrentDevice.CheckSystemVersion(8, 0))
{
var settings = UIUserNotificationSettings.GetSettingsForTypes(UIUserNotificationType.Alert| UIUserNotificationType.Badge| UIUserNotificationType.Sound,new NSSet());
UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
}
return true;
}
New to iOS 10, an app can handle Notifications differently when it is in the foreground and a Notification is triggered. By providing aUNUserNotificationCenterDelegate and implementing theUserNotificationCentermethod, the app can take over responsibility for displaying the Notification. For example:
using System;
using ObjCRuntime;
using UserNotifications;
namespace workplat
{
public class NotificationDelegate:UNUserNotificationCenterDelegate
{
public NotificationDelegate()
{
}
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);
}
public override void DidReceiveNotificationResponse(UNUserNotificationCenter center, UNNotificationResponse response, Action completionHandler)
{
// Take action based on Action ID
switch (response.ActionIdentifier)
{
case "reply":
// Do something
break;
default:
// Take action based on identifier
if (response.IsDefaultAction)
{
// Handle default action...
}
else if (response.IsDismissAction)
{
// Handle dismiss action
}
break;
}
// Inform caller it has been handled
completionHandler();
}
}
}
To create and register a Custom Action with the system, use the following code:
public void RegisterNotification(long time)
{
UNUserNotificationCenter center = UNUserNotificationCenter.Current;
//creat a UNMutableNotificationContent which contains your notification content
UNMutableNotificationContent notificationContent = new UNMutableNotificationContent();
notificationContent.Title = "xxx";
notificationContent.Body= "xxxx";
notificationContent.Sound = UNNotificationSound.Default;
UNTimeIntervalNotificationTrigger trigger = UNTimeIntervalNotificationTrigger.CreateTrigger(time, false);
UNNotificationRequest request = UNNotificationRequest.FromIdentifier("FiveSecond", notificationContent, trigger);
center.AddNotificationRequest(request,(NSError obj) =>
{
});
}
When you call this method ,for emample:
RegisterNotification(20);//set the time you want to push notification
The notification will been pushed after 20 seconds,enen if you close your app.
I have upload my demo to my github, you can download it for your reference: Demo Link .
And you can access the link for more information and details: MicroSoft Document
try this it will create a local notification after 5 second but if you want repetitive then increase the time more then 60
write this in your app delegate
import UIKit
import UserNotifications
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate,UNUserNotificationCenterDelegate {
var window: UIWindow?
//user notification method
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert,.sound])
}
//response to user notification
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
if response.notification.request.identifier == "testidentifire"
{
print("test")
}
completionHandler()
}
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
UNUserNotificationCenter.current().delegate = self
UNUserNotificationCenter.current().requestAuthorization(options: [.alert,.sound,.badge]) { (granted, error) in
print("granted\(granted)")
}
return true
}
and in your view controller
import UIKit
import UserNotifications
class ViewController: UIViewController,UNUserNotificationCenterDelegate {
override func viewDidLoad() {
super.viewDidLoad()
//sendign local notification you need three object a contant,trigger,represh
let content = UNMutableNotificationContent()
content.title = "test notifaction"
content.body = "test notification after 5 second"
content.sound = UNNotificationSound.default()
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: true)
let request = UNNotificationRequest(identifier: "testidentifire", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request) { (error) in
print("error\(error )")
//this will show notification when app is in background but if you need to show notification on foreground then u need to implement the delegate method of UNuserNotificationcenter.curent in app delegate
}
}
