Rich Push notification with firebase and sending push notification with FCM on ios devices - swift

Question

I have integrated the normal text based push notification through Firebase Cloud Messaging. The push is send through FCM server and its working fine.
But I am stuck on media based push notification including images and media based notification. I have also tested with postman console with format mentioned below:
Use a service api.
URL: https://fcm.googleapis.com/fcm/send
Method Type: POST
Headers:
Content-Type: application/json
Authorization: key=your api key
Body/Payload:
{ "notification": {
"title": "Your Title",
"text": "Your Text"
},
"data": {
"message": "Offer!",
"mediaUrl": "https://cdn.pixabay.com/photo/2018/01/21/01/46/architecture-3095716_960_720.jpg"
},
"to" : "to_id(firebase refreshedToken)"
}
Through this, I am receiving only normal text based push. What should be the error or correct way to send rich notification in ios 10 or later device??
Thanks in advance.

Answer 1

The correct format is this (tested)
{
"to": "deviceFCMtoken",
"notification":{
"title" : "Check this Title",
"subtitle" : "Subtitle",
"body" : "Body",
"mutable_content" : true,
"category" : "categoryID"
},
"data":{
"image-url": "www.something.com"
}
}

Answer 2

You should provide the mutable-content and content-available in your FCM payload. Both are boolean and must also be outside the notification parameter
{
"to" : "to_id(firebase refreshedToken),
"mutable_content": true,
"content-available": true,
"data": {
"message": "Offer!",
"mediaUrl": "https://cdn.pixabay.com/photo/2018/01/21/01/46/architecture-3095716_960_720.jpg
},
"notification": {
"title": "my title",
"subtitle": "my subtitle",
"body": "some body"
}
}