User Presence

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Before you begin

1. Register a QuickBlox account. This is a matter of a few minutes and you will be able to use this account to build your apps.
2. Configure QuickBlox SDK for your app. Check out our Setup page for more details.
3. Create a user session to be able to use QuickBlox functionality. See our Authentication page to learn how to do it.
4. Connect to the Chat server. See our Connection page to learn how to do it.

Visit our Key Concepts page to get an overall understanding of the most important QuickBlox concepts.

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Check if a user is online

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Ping user

QuickBlox SDK can send application-level pings to a user. As a result, you can check if the user is connected to the Chat server.

int userId = 89987878;

try {
  await QB.chat.pingUser(userId);
} on PlatformException catch (e) {
  // Some error occurred, look at the exception message for more details
}

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Ping server

QuickBlox SDK can send application-level pings to a server. As a result, you can check if there is a connection with the Chat server.

try {
  await QB.chat.pingServer();
} on PlatformException catch (e) {
  // Some error occurred, look at the exception message for more details
}