Notification Content Extension allows you to customize the appearance of the notification in expanded mode.For info on how to create campaigns with templates in the dashboard refer to this link.

STEPS:

To support these custom push templates, your project needs to have a Notification Content Extension. Follow the below steps to create a Content Extension and to set it up to support MoEngage templates:

1. Create a Notification Content Extension

After the target is created, Activate the scheme for Extension when prompted for the same.

After this, your extension will be added to the project you will see a class with the extension name provided by you while creating and an .plist file associated with it.

2. Set deployment target 

Set the deployment target same as the main app target.

3. Add required Capabilities

In the Capabilities Section add App Groups and select the same app group id that you have configured in your App target and Notification Service Extension target.

Refer to the Set AppGroup ID section of the doc for more information on setting the app group ID on the main target

4. Info.plist changes

Make the changes in the Info.plist of your Notification Content Extension, as shown above, set NSExtensionAttributes as following:

5. Storyboard changes

Select MainInterface.storyboard in your Content extension and remove the default label which is placed there and set the background color of the view to clear color, as shown:

6. MoEngageRichNotification Integration

Integration via CocoaPod

For integrating through CocoaPod, include MoEngageRichNotification pod for your Notification Content Extension as shown below, and run the pod update / install command :

target "NotificationContent" do
	pod 'MoEngage-iOS-SDK/RichNotification','~>9.18.0'
end

Integration via Swift Package Manager

For integrating through SPM, use the https://github.com/moengage/MoEngage-iOS-SDK.git GitHub URL link and set the branch as master or required version. 

7. Code Changes in Content Extension:

import UIKit
import UserNotifications
import UserNotificationsUI
import MoEngageRichNotification
  
class NotificationViewController: UIViewController, UNNotificationContentExtension {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Set App Group ID
        MoEngageSDKRichNotification.setAppGroupID("Your App Group ID")
    }
  
    
    func didReceive(_ notification: UNNotification) {
        // Method to add template to UI
        MoEngageSDKRichNotification.addPushTemplate(toController: self, withNotification: notification)
    }
}

#import "NotificationViewController.h"
#import <UserNotifications/UserNotifications.h>
#import <UserNotificationsUI/UserNotificationsUI.h>
@import MoEngageRichNotification;

@interface NotificationViewController () <UNNotificationContentExtension>

@end

@implementation NotificationViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Set App Group ID
    [MoEngageSDKRichNotification setAppGroupID:@"Your App Group ID"];
}

- (void)didReceiveNotification:(UNNotification *)notification {
    // Method to add template to UI
    [MoEngageSDKRichNotification addPushTemplateToController:self withNotification:notification];
}

@end

As shown above, make these changes in your NotificationViewController  class:

1. Set the same App Group ID in viewDidLoad() method which was enabled in Capabilities.
2. Call addPushTemplate(toController:withNotification:) method to add template in didReceiveNotification() callback.