send notification to all tokens

Question

When I want to send Notification to all devices I retrieve all tokens of devices in List and try to send notification to all devices with this List but that work for just the first device's token

• So can I use for loop to send notification to all tokens or there is better way?
• And if I used for loop should I put this process in separate thread?

Thx

Answer 1

This is not the way to send a notification to multiple devices. Looping through all of the tokens isn't needed. Firebase provides a way called Topic Messaging.

For example you can subscribe all your devices to a topic called All and then message the All topic.

Here is the documentation: Firebase Topic Messaging