Properties - Android

A PubSubMessage is one message delivered to a PubSubMessageListener. Read its fields as Kotlin properties. All of them except timestamp are nullable, so handle null when you read them:

val text = message.message ?: ""
val isMine = message.senderId == room.localParticipant.id

id

• type: String?

• id is the unique id of the pubsub message.

---

message

• type: String?

• message is the message that has been published on the specific topic.

---

topic

• type: String?

• topic is the name of the message topic.

---

senderId

• type: String?

• senderId is the id of the participant who has sent the message. Compare it with room.localParticipant.id to tell your own messages from everyone else's.

---

senderName

• type: String?

• senderName is the name of the participant who has sent the pubsub message.

---

timestamp

• type: String

• timestamp is the time at which the server accepted the pubsub message, exactly as the server sent it: an ISO-8601 UTC string such as 2026-10-05T09:30:00.000Z. It is an empty string if the server sent none.

• To get a time value, parse it, for example with java.time.Instant.parse(message.timestamp) (API level 26 and above). Check for an empty string first.

---

payload

• type: JSONObject?

• payload is the data sent along with the message, or null if none was sent.