Push Notification with Image - iOS - Swift - ios

Question

Hi I just want to show push Notification with Image. Im using the below code and im not sure where im doing mistake it took me more than 3 weeks, I gone through many Links but still it couldn't be fixed. the below is my App delegate code
AppDelegate.Swift
import UIKit
import UserNotifications
var deviceTokenString:String = ""
var badgeCount = 0
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Push Notification
if #available(iOS 10.0, *)
{
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
// actions based on whether notifications were authorised or not
guard error == nil else {
//Display Error.. Handle Error.. etc..
return
}
if granted
{
//Do stuff here..
}
else {
//Handle user denying permissions..
}
}
application.registerForRemoteNotifications()
} else {
// Fallback on earlier versions
}
registerForRemoteNotification()
// iOS 10 support
if #available(iOS 10, *) {
UNUserNotificationCenter.current().requestAuthorization(options:[.alert, .sound]){ (granted, error) in }
application.registerForRemoteNotifications()
}
// iOS 9 support
else if #available(iOS 9, *) {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
}
// iOS 8 support
else if #available(iOS 8, *) {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
}
// iOS 7 support
else {
application.registerForRemoteNotifications(matching: [.sound, .alert])
}
return true
}
func registerForRemoteNotification() {
if #available(iOS 10.0, *) {
let center = UNUserNotificationCenter.current()
center.delegate = self
center.requestAuthorization(options: [.sound, .alert]) { (granted, error) in
if error == nil{
UIApplication.shared.registerForRemoteNotifications()
// UIApplication.shared.applicationIconBadgeNumber = 5
}
}
}
else {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
// UIApplication.shared.applicationIconBadgeNumber = 5
}
}
func incrementBadgeNumberBy(badgeNumberIncrement: Int)
{
let currentBadgeNumber = UIApplication.shared.applicationIconBadgeNumber
let updatedBadgeNumber = currentBadgeNumber + badgeNumberIncrement
if (updatedBadgeNumber > 0)
{
UIApplication.shared.applicationIconBadgeNumber = updatedBadgeNumber
}
else
{
UIApplication.shared.applicationIconBadgeNumber = 0
}
}
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
print("Couldn't register: \(error)")
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
deviceTokenString = deviceToken.hexString()
// deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
print("device token: \(deviceTokenString)")
}
// Push notification received
func application(_ application: UIApplication, didReceiveRemoteNotification data: [AnyHashable : Any]) {
// Print notification payload data
badgeCount = badgeCount + 1
self.incrementBadgeNumberBy(badgeNumberIncrement: badgeCount)
print("Push notification received: \(data)")
}
// Notification will present call back
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .sound, .badge])
print("UserInfo: \(notification.request.content.userInfo)")
var userinfo = NSDictionary()
userinfo = notification.request.content.userInfo as NSDictionary
let imgData = userinfo.value(forKey: "data")! as! NSDictionary
let url = imgData.value(forKey: "attachment-url")
let imgUrl = URL(string: url as! String)!
// 1. Create Notification Content
let content = UNMutableNotificationContent()
// 2. Create Notification Attachment
URLSession.shared.downloadTask(with: imgUrl)
{(location, response, error) in
print("location: \(location!)")
if error == nil
{
if let location = location
{
// Move temporary file to remove .tmp extension
let tmpDirectory = NSTemporaryDirectory()
let tmpFile = "file://".appending(tmpDirectory).appending(imgUrl.lastPathComponent)
print("tmpFile: \(tmpFile)")
let tmpUrl = URL(string: tmpFile)!
print("tmpUrl: \(tmpUrl)")
try! FileManager.default.moveItem(at: location, to: tmpUrl)
// Add the attachment to the notification content
if let attachment = try? UNNotificationAttachment(identifier: "attachment", url: tmpUrl) {
content.attachments = [attachment]
print("attachment: \(content.attachments)")
// 3. Create Notification Request
let request = UNNotificationRequest.init(identifier: String.UNNotificationRequest.NormalLocalPush.rawValue,
content: content, trigger: nil)
content.title = "\(userinfo.value(forKeyPath: "aps.alert.title")!)"
content.body = "\(userinfo.value(forKeyPath: "aps.alert.body")!)"
content.sound = UNNotificationSound.default()
content.badge = (UIApplication.shared.applicationIconBadgeNumber + 1) as NSNumber;
content.categoryIdentifier = String.UNNotificationCategory.Normal.rawValue
// 4. Add to NotificationCenter
let center = UNUserNotificationCenter.current()
center.add(request)
}
}
}
else
{
print("Error: \(error!)")
}
}.resume()
}
#available(iOS 10.0, *)
// Notification interaction response call back
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: #escaping () -> Void) {
print("\(response.notification.request.content.userInfo)")
var userinfo = NSDictionary()
userinfo = response.notification.request.content.userInfo as NSDictionary
let imgData = userinfo.value(forKey: "data")! as! NSDictionary
let url = imgData.value(forKey: "attachment-url")
let imgUrl = URL(string: url as! String)!
// 1. Create Notification Content
let content = UNMutableNotificationContent()
content.title = "\(userinfo.value(forKeyPath: "aps.alert.title")!)"
content.body = "\(userinfo.value(forKeyPath: "aps.alert.body")!)"
content.sound = UNNotificationSound.default()
content.badge = (UIApplication.shared.applicationIconBadgeNumber + 1) as NSNumber;
content.categoryIdentifier = String.UNNotificationCategory.Normal.rawValue // 设置通知类型标示
// 2. Create Notification Attachment
URLSession.shared.downloadTask(with: imgUrl) { (location, response, error) in
if let location = location {
// Move temporary file to remove .tmp extension
let tmpDirectory = NSTemporaryDirectory()
let tmpFile = "file://".appending(tmpDirectory).appending(imgUrl.lastPathComponent)
let tmpUrl = URL(string: tmpFile)!
try! FileManager.default.moveItem(at: location, to: tmpUrl)
// Add the attachment to the notification content
if let attachment = try? UNNotificationAttachment(identifier: "", url: tmpUrl) {
content.attachments = [attachment]
}
}
// Serve the notification content
// self.contentHandler!(content)
}.resume()
// if let attachement = try? UNNotificationAttachment(identifier: "attachment", url: imgUrl, options: nil)
// {
// content.attachments = [attachement]
// }
// 3. Create Notification Request
let request = UNNotificationRequest.init(identifier: String.UNNotificationRequest.NormalLocalPush.rawValue,
content: content, trigger: nil)
// 4. Add to NotificationCenter
let center = UNUserNotificationCenter.current()
center.add(request)
let responseNotificationRequestIdentifier = response.notification.request.identifier
if responseNotificationRequestIdentifier == String.UNNotificationRequest.NormalLocalPush.rawValue ||
responseNotificationRequestIdentifier == String.UNNotificationRequest.LocalPushWithTrigger.rawValue ||
responseNotificationRequestIdentifier == String.UNNotificationRequest.LocalPushWithCustomUI1.rawValue ||
responseNotificationRequestIdentifier == String.UNNotificationRequest.LocalPushWithCustomUI2.rawValue {
let actionIdentifier = response.actionIdentifier
switch actionIdentifier {
case String.UNNotificationAction.Accept.rawValue:
break
case String.UNNotificationAction.Reject.rawValue:
break
case String.UNNotificationAction.Input.rawValue:
break
case UNNotificationDismissActionIdentifier:
break
case UNNotificationDefaultActionIdentifier:
break
default:
break
}
}
completionHandler();
}
}
extension Data
{
func hexString() -> String
{
return self.reduce("") { string, byte in
string + String(format: "%02X", byte)
}
}
}
And below is my Extension Code which im using for custom Push notification,
Extension.swift
import Foundation
extension String {
enum UNNotificationAction : String {
case Accept
case Reject
case Input
}
enum UNNotificationCategory : String {
case Normal
case Cheer
case CheerText
}
enum UNNotificationRequest : String {
case NormalLocalPush
case LocalPushWithTrigger
case LocalPushWithCustomUI1
case LocalPushWithCustomUI2
}
}
extension URL {
enum ResourceType : String {
case Local
case Local1
case Remote
case AttachmentRemote
}
static func resource(type :ResourceType) -> URL
{
switch type {
case .Local:
return Bundle.main.url(forResource: "cheer", withExtension: "png")!
case .Local1:
return Bundle.main.url(forResource: "hahaha", withExtension: "gif")!
case .Remote:
return URL(string: "http://ww1.sinaimg.cn/large/65312d9agw1f59leskkcij20cs0csmym.jpg")!
case .AttachmentRemote:
return URL(string: "https://assets-cdn.github.com/images/modules/open_graph/github-mark.png")!
}
}
}
extension URLSession {
class func downloadImage(atURL url: URL, withCompletionHandler completionHandler: #escaping (Data?, NSError?) -> Void) {
let dataTask = URLSession.shared.dataTask(with: url) { (data: Data?, response: URLResponse?, error: Error?) in
completionHandler(data, error as NSError?)
}
dataTask.resume()
}
}
and My Api response is,
[AnyHashable("aps"):
{
alert = {
body = test;
title = "N-Gal";
};
"mutable-content" = 1;
sound = default;
},
AnyHashable("data"):
{
"attachment-url" = "https://www.n-gal.com/image/cache/catalog/HomeBanner/Banners/1172X450-N-Gal-Footwear-Banner-100x100.jpg";
}]
This code is based on the tutorial https://github.com/maquannene/UserNotifications. Please give me a solution to fix this... Thanks in Advance...!

Answer 1

From your code snippet I conclude you are talking about remote notifications. That's an important distinction. If you want to 'enrich' a remote notification (e.g. add an image), you need a UNNotificationServiceExtension:
For local notifications, the app adds attachments when creating the
rest of the notification’s content. To add attachments to a remote
notification, use a notification service extension to modify the
notification content before it is delivered. For more information
about implementing a notification service extension, see
UNNotificationServiceExtension
Source: Apple documentation. (emphasis mine)
That extension lives outside of your app and is called before the user gets to see the remote notification. That way you have the chance to load all of your remote resources before the notification is scheduled for delivery. For more info on the lifecycle of extensions and how they communicate with their host app, take a look at the App Extension Programming Guide.
To add the extension in Xcode, go to File > New > Target and select a Notification Service Extension:
This will create new extension target and embed it in the host target:
In the NotificationService.swift file you will find the entry point where you can start customising the notification content.
class NotificationService: UNNotificationServiceExtension {
var contentHandler: ((UNNotificationContent) -> Void)?
var bestAttemptContent: UNMutableNotificationContent?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: #escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
if let bestAttemptContent = bestAttemptContent {
// Modify the notification content here...
bestAttemptContent.title = "\(bestAttemptContent.title) [modified]"
contentHandler(bestAttemptContent)
}
}
override func serviceExtensionTimeWillExpire() {
// Called just before the extension will be terminated by the system.
// Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
contentHandler(bestAttemptContent)
}
}
}
Be sure to take look at the UNNotificationServiceExtension class overview for more details.