capacitor-plugin-silent-notifications

Allows a Capacitor application to handle iOS remote/silent push notifications.

Prerequisites

• Must be using iOS 13 or later
• Your app must be setup to receive push notifications (you need the device token)

Install

npm link

npm install capacitor-plugin-silent-notifications
npx cap sync

Add to AppDelete.swift

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    // debug
    print("Received by: didReceiveRemoteNotification w/ fetchCompletionHandler")

    // Perform background operation, need to create a plugin
    NotificationCenter.default.post(name: Notification.Name(rawValue: "silentNotificationReceived"), object: nil, userInfo: userInfo)

    // Give the listener a few seconds to complete, system allows for 30 - we give 25. The system will kill this after 30 seconds.
    DispatchQueue.main.asyncAfter(deadline: .now() + 25) {
        // Execute after 25 seconds
        completionHandler(.newData)
    }
}

// we just add this to deal with an iOS simulator bug, this method is deprecated as of iOS 13
func application(_ application: UIApplication, performFetchWithCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    // debug
    print("Received by: performFetchWithCompletionHandler")
    
    // Perform background operation, need to create a plugin
    NotificationCenter.default.post(name: Notification.Name(rawValue: "silentNotificationReceived"), object: nil, userInfo: nil)

    // Give the listener a few seconds to complete, system allows for 30 - we give 25. The system will kill this after 30 seconds.
    DispatchQueue.main.asyncAfter(deadline: .now() + 25) {
        // Execute after 25 seconds
        completionHandler(.newData)
    }
}

Add the listener to your Capacitor app

import { CapacitorSilentNotifications } from 'capacitor-plugin-silent-notifications'

CapacitorSilentNotifications.addListener('silentNotificationReceived', async (payload) => {
    // do something with the notification payload here
    console.log('silentNotificationReceived', payload);
});

API

• addListener('silentNotificationReceived', ...)
• removeAllListeners()
• Interfaces

addListener('silentNotificationReceived', ...)

addListener(eventName: 'silentNotificationReceived', listenerFunc: (payload: any) => void) => Promise<PluginListenerHandle> & PluginListenerHandle

Listens to events associated with Silent Notifications and notifies the listenerFunc if a background notification has been received.

Param	Type	Description
eventName	'silentNotificationReceived'	Name of the event
listenerFunc	(payload: any) => void	Function to execute when listener gets notified

Returns: Promise<PluginListenerHandle> & PluginListenerHandle

Since: 1.0.0

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removeAllListeners()

removeAllListeners() => Promise<void>

Remove all listeners for this plugin.

Since: 1.0.0

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Interfaces

PluginListenerHandle

Prop	Type
remove	() => Promise<void>