ContactEventHandler class Null safety

The contact event handler.

Occurs when the contact changes, including requests to add friends, notifications to delete friends, requests to accept friends, and requests to reject friends.

Adds a contact event handler:

  ChatClient.getInstance.contactManager.addEventHandler(UNIQUE_HANDLER_ID, ContactEventHandler());

Remove a contact event handler:

  ChatClient.getInstance.contactManager.removeEventHandler(UNIQUE_HANDLER_ID);

Constructors

ContactEventHandler({void onContactAdded(String userId)?, void onContactDeleted(String userId)?, void onContactInvited(String userId, String? reason)?, void onFriendRequestAccepted(String userId)?, void onFriendRequestDeclined(String userId)?})
The contact updates listener callback.

Properties

hashCode → int
The hash code for this object.
read-onlyinherited
onContactAdded → (void Function(String userId)?)
Occurs when user is added as a contact by another user.
final
onContactDeleted → (void Function(String userId)?)
Occurs when a user is removed from the contact list by another user.
final
onContactInvited → (void Function(String userId, String? reason)?)
Occurs when a user receives a friend request.
final
onFriendRequestAccepted → (void Function(String userId)?)
Occurs when a friend request is approved.
final
onFriendRequestDeclined → (void Function(String userId)?)
Occurs when a friend request is declined.
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited