pass an array of data and display it in notifications - swift

Question

I do not know how to implement the function so that notifications come one by one from the data array. Here is my function that displays only one,last notification :
func addNotificationWithTimeIntervalTrigger(title :String){
let content = UNMutableNotificationContent()
content.title = title
content.subtitle = "Subtitle"
content.body = "Body"
//content.badge = 1
content.sound = UNNotificationSound.default()
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 3, repeats: false)
let reguest = UNNotificationRequest(identifier: "timeInterval", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(reguest) { (error) in
}
}
Here I just pass the data from my tableView :
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
switch indexPath.row {
case 0:
UserNotificationManager.shared.addNotificationWithTimeIntervalTrigger(title:"aaa")
default: break
}
My notification :
How to make the notifications go one by one from the array?

Answer 1

Make sure that every scheduled notification has a different identifier , otherwise the new one will replace the old
let reguest = UNNotificationRequest(identifier: "timeInterval", content: content, trigger: trigger)

Answer 2

This could be achieved by using the indexPath.row to get an object from your data model. You have not shared your data model, but an array is a useful way to store your objects for situations like this.
With some changes, your custom function could look like this. You can now pass an integer index to get the correct object from your model.
func addNotificationWithTimeIntervalTrigger(title: String, index: Int) {
guard let thisObject = yourDataModelArray[index] as? YourObjectType else { return }
let content = UNMutableNotificationContent()
content.title = title // This could be taken from data model instead
content.subtitle = thisObject.subtitle
content.body = thisObject.body
content.sound = UNNotificationSound.default()
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 3, repeats: false)
let reguest = UNNotificationRequest(identifier: "timeInterval", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(reguest) { (error) in
if let error = error {
// Error handling
}
}
}
Then you could call it like this. No switch statement needed as it pulls data from your data model based on the indexPath.row. Note that you could also store the titles in your data model, meaning you would not have to pass this as an argument.
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
UserNotificationManager.shared.addNotificationWithTimeIntervalTrigger(title:"Custom title", index: indexPath.row)
}

Answer 3

Try This Separate File created for local Notifications
import Foundation
import UIKit
import UserNotifications
struct NotificationHandlerStruct {
static var notifyTimer : Timer?
}
class LocalNotificationHandler: NSObject, UNUserNotificationCenterDelegate
{
static var shared = LocalNotificationHandler()
//MARK: Schedule Notification
func scheduleNotification(Title title: String, Subtitle subtitle: String, BodyMessage body: String, AlertContent contentRx:[AnyHashable:Any]) {
/// Remove Previous Displayed Notification in case if you need
UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: ["gruveoCall"])
let content = UNMutableNotificationContent()
//adding title, subtitle, body and badge
content.title = title
content.subtitle = subtitle
content.sound = UNNotificationSound.default()
content.body = body
content.badge = 0
content.userInfo = contentRx
//getting the notification trigger
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 0.01, repeats: false)
//getting the notification request
let request = UNNotificationRequest(identifier: "gruveoCall", content: content, trigger: trigger)
//adding the notification to notification center
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
/// Comment Code below if you do not want to repeat same notification again after some interval of time
if NotificationHandlerStruct.notifyTimer == nil {
NotificationHandlerStruct.notifyTimer = Timer.scheduledTimer(withTimeInterval: 5, repeats: true, block: { (timer) in
self.sendNotification(NotificationContent: content)
})
}
else{
NotificationHandlerStruct.notifyTimer?.invalidate()
NotificationHandlerStruct.notifyTimer = nil
}
}
//MARK: Repeat Notification
func sendNotification(NotificationContent content: UNMutableNotificationContent) {
UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: ["gruveoCall"])
//getting the notification trigger
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 0.01, repeats: false)
//getting the notification request
let request = UNNotificationRequest(identifier: "gruveoCall", content: content, trigger: trigger)
//adding the notification to notification center
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
}
//MARK: Stop Timer
func stopTimer() {
if NotificationHandlerStruct.notifyTimer != nil {
NotificationHandlerStruct.notifyTimer?.invalidate()
NotificationHandlerStruct.notifyTimer = nil
}
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
//displaying the ios local notification when app is in foreground
completionHandler([.alert, .badge, .sound])
}
}
Usage
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
LocalNotificationHandler.shared.scheduleNotification(Title: self.providerListArray![indexPath.row], Subtitle: "My Subtitle", BodyMessage: "Some Message", AlertContent: ["aps":["data":"your Content"]])
}