Login Listeners
The CometChat SDK provides you with real-time updates for the login
and logout
events. This can be achieved using the LoginListener
class provided. LoginListener consists of 4 events that can be triggered. These are as follows:
Callback Method | Information |
---|---|
loginSuccess(user) | Informs you that the login was successful and provides you with a user object containing the data for the user that logged in. |
loginFailure(event) | Informs you about the failure while logging in the user and provides you with the reason for the failure wrapped in an object of the CometChatException class. |
logoutSuccess() | Informs you about the user being logged out successfully. |
logoutFailure(event) | Informs you about the failure while logging out the user. The reason for the failure can be obtained from the object of the CometChatException class. |
To add the LoginListener
, you need to use the addLoginListener()
method provided by the SDK which takes a unique identifier for the listener and of the the LoginListener
class itself.
- Add Login Listener
- Typescript
let listenerID = "UNIQUE_LISTENER_ID";
CometChat.addLoginListener(
listenerID,
new CometChat.LoginListener({
loginSuccess: (e) => {
console.log("LoginListener :: loginSuccess", e);
},
loginFailure: (e) => {
console.log("LoginListener :: loginFailure", e);
},
logoutSuccess: () => {
console.log("LoginListener :: logoutSuccess");
},
logoutFailure: (e) => {
console.log("LoginListener :: logoutFailure", e);
}
})
);
var listenerID: string = "UNIQUE_LISTENER_ID";
CometChat.addLoginListener(
listenerID,
new CometChat.LoginListener({
loginSuccess: (user: CometChat.User) => {
console.log("LoginListener :: loginSuccess", user);
},
loginFailure: (error: CometChat.CometChatException) => {
console.log("LoginListener :: loginFailure", error);
},
logoutSuccess: () => {
console.log("LoginListener :: logoutSuccess");
},
logoutFailure: (error: CometChat.CometChatException) => {
console.log("LoginListener :: logoutFailure", error);
}
})
);
In order to stop receiving events related to login and logout you need to use the removeLoginListener()
method provided by the SDK and pass the ID of the listener that needs to be removed.
- Remove Login Listener
- Typescript
let listenerID = "UNIQUE_LISTENER_ID";
CometChat.removeLoginListener(listenerID);
var listenerID: string = "UNIQUE_LISTENER_ID";
CometChat.removeLoginListener(listenerID);