feature(ios): Add support for subtitle notification property

Author: GertSallaerts

README.md

@@ -336,6 +336,7 @@ PushNotification.localNotification({
 
   /* iOS only properties */
   category: "", // (optional) default: empty string
+  subtitle: "My Notification Subtitle", // (optional) smaller title below notification title
 
   /* iOS and Android properties */
   id: 0, // (optional) Valid unique 32 bit integer specified as string. default: Autogenerated Unique ID

example/NotifService.js

@@ -87,14 +87,15 @@ export default class NotifService {
       ongoing: false, // (optional) set whether this is an "ongoing" notification
       actions: ['Yes', 'No'], // (Android only) See the doc for notification actions to know more
       invokeApp: true, // (optional) This enable click on actions to bring back the application to foreground or stay in background, default: true
-      
+
       when: null, // (optionnal) Add a timestamp pertaining to the notification (usually the time the event occurred). For apps targeting Build.VERSION_CODES.N and above, this time is not shown anymore by default and must be opted into by using `showWhen`, default: null.
       usesChronometer: false, // (optional) Show the `when` field as a stopwatch. Instead of presenting `when` as a timestamp, the notification will show an automatically updating display of the minutes and seconds since when. Useful when showing an elapsed time (like an ongoing phone call), default: false.
       timeoutAfter: null, // (optional) Specifies a duration in milliseconds after which this notification should be canceled, if it is not already canceled, default: null
 
       /* iOS only properties */
       category: '', // (optional) default: empty string
-      
+      subtitle: "My Notification Subtitle", // (optional) smaller title below notification title
+
       /* iOS and Android properties */
       id: this.lastId, // (optional) Valid unique 32 bit integer specified as string. default: Autogenerated Unique ID
       title: 'Local Notification', // (optional)

index.js

@@ -170,11 +170,12 @@ Notifications.localNotification = function({...details}) {
       soundName = ''; // empty string results in no sound (and no vibration)
     }
 
-    // for valid fields see: https://developer.apple.com/library/archive/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/PayloadKeyReference.html
+    // for valid fields see: https://github.com/react-native-push-notification-ios/push-notification-ios#addnotificationrequest
 
     this.handler.addNotificationRequest({
       id: (!details.id ? Math.floor(Math.random() * Math.pow(2, 32)).toString() : details.id),
       title: details.title,
+      subtitle: details.subtitle,
       body: details.message,
       badge: details.number,
       sound: soundName,
@@ -252,6 +253,7 @@ Notifications.localNotificationSchedule = function({...details}) {
       id: (!details.id ? Math.floor(Math.random() * Math.pow(2, 32)).toString() : details.id),
       fireDate: details.date.toISOString(),
       title: details.title,
+      subtitle: details.subtitle,
       body: details.message,
       sound: soundName,
       isSilent: details.playSound === false,
@@ -364,6 +366,7 @@ Notifications._transformNotificationObject = function(data, isFromBackground = n
       data: notifData,
       badge: data.getBadgeCount(),
       title: data.getTitle(),
+      subtitle: data.getSubtitle(),
       soundName: data.getSound(),
       fireDate: Date.parse(data._fireDate),
       action: data.getActionIdentifier(),