Merge pull request TwilioDevEd#811 from Gray-Wind/feature/update-ios-notification-instructions

Update iOS push notification code snippets

Author: Craig Dennis

ip-messaging/pushiOS/didreceiveremote/didreceiveremote.m

@@ -1,3 +1,23 @@
+// For iOS 10 and later; do not forget to set up a delegate for UNUserNotificationCenter
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center
+didReceiveNotificationResponse:(UNNotificationResponse *)response
+         withCompletionHandler:(void (^)(void))completionHandler {
+    NSDictionary *userInfo = response.notification.request.content.userInfo;
+    // If your application supports multiple types of push notifications, you may wish to limit which ones you send to the TwilioChatClient here
+    if (self.chatClient) {
+        // If your reference to the Chat client exists and is initialized, send the notification to it
+        [self.chantClient handleNotification:userInfo completion:^(TCHResult *result) {
+            if (![result isSuccessful]) {
+                // Handling of notification was not successful, retry?
+            }
+        }];
+    } else {
+         // Store the notification for later handling
+         self.receivedNotification = userInfo;
+     }
+}
+
+// For iOS versions before 10
 - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
   // If your application supports multiple types of push notifications, you may wish to limit which ones you send to the TwilioChatClient here
   if (self.chatClient && userInfo) {
@@ -11,4 +31,4 @@ - (void)application:(UIApplication *)application didReceiveRemoteNotification:(N
       // Store the notification for later handling
       self.receivedNotification = userInfo;
   }
-}
+}

ip-messaging/pushiOS/didreceiveremote/didreceiveremote.swift

@@ -1,3 +1,23 @@
+// For iOS 10 and later; do not forget to set up a delegate for UNUserNotificationCenter
+func userNotificationCenter(_ center: UNUserNotificationCenter,
+            didReceive response: UNNotificationResponse,
+            withCompletionHandler completionHandler: 
+               @escaping () -> Void) {
+   let userInfo = response.notification.request.content.userInfo
+   if let chatClient = chatClient, chatClient.user != nil {
+       // If your reference to the Chat client exists and is initialized, send the notification to it
+       chatClient.handleNotification(userInfo) { (result) in
+           if (!result.isSuccessful()) {
+               // Handling of notification was not successful, retry?
+           }
+       }
+   } else {
+       // Store the notification for later handling
+       receivedNotification = userInfo
+   }
+}
+
+// For iOS versions before 10
 func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
     // If your application supports multiple types of push notifications, you may wish to limit which ones you send to the TwilioChatClient here
     if let chatClient = chatClient, chatClient.user != nil {

ip-messaging/pushiOS/systemversion/systemversion.m

@@ -1,6 +1,16 @@
-if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
-       [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
+if (@available(iOS 10.0, *)) {
+    UNUserNotificationCenter *currentNotificationCenter = [UNUserNotificationCenter currentNotificationCenter];
+    [currentCenter requestAuthorizationWithOptions:UNAuthorizationOptionBadge | UNAuthorizationOptionAlert | UNAuthorizationOptionSound
+                                 completionHandler:^(BOOL granted, NSError *error) {
+        // Add here your handling of granted or not granted permissions
+    }];
+    currentNotificationCenter.delegate = self;
 } else {
-       [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
-        (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];
-}
+    NSDictionary* localNotification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
+    if (localNotification) {
+        [self application:application didReceiveRemoteNotification:localNotification];
+    }
+
+    [UIApplication.sharedApplication registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
+    [UIApplication.sharedApplication registerForRemoteNotifications];
+}

ip-messaging/pushiOS/usernotificationsettings/usernotificationsettings.m

@@ -1,3 +1,15 @@
+// For iOS 10 and later add this to the didFinishLaunchingWithOptions function or a similar place
+// once you get granted permissions
+if (@available(iOS 10.0, *)) {
+    UNUserNotificationCenter *currentNotificationCenter = [UNUserNotificationCenter currentNotificationCenter];
+    [currentNotificationCenter getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings *settings) {
+        if (settings.authorizationStatus == UNAuthorizationStatusAuthorized) {
+            [UIApplication.sharedApplication registerForRemoteNotifications];
+        }
+    }];
+}
+
+// For iOS versions before 10 you should add such implementation
 - (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings {
     if(notificationSettings.types == UIUserNotificationTypeNone) {
         NSLog(@"Failed to get token, error: Notifications are not allowed");
@@ -7,6 +19,6 @@ - (void)application:(UIApplication *)application didRegisterUserNotificationSett
             self.updatedPushToken = nil;
         }
     } else {
-        [[UIApplication sharedApplication] registerForRemoteNotifications];
+        [UIApplication.sharedApplication registerForRemoteNotifications];
     }
 }