ChatPresenceEventHandler class
~english The presence event handler.
Occurs when the following presence events happens: presence status changed.
Adds a presence event handler:
  ChatClient.getInstance.presenceManager.addEventHandler(UNIQUE_HANDLER_ID, ChatPresenceEventHandler());
Removes a presence event handler:
  ChatClient.getInstance.presenceManager.removeEventHandler(UNIQUE_HANDLER_ID);
~end
~chinese 订阅用户状态变更监听
添加监听:
  ChatClient.getInstance.presenceManager.addEventHandler(UNIQUE_HANDLER_ID, ChatPresenceEventHandler());
移除监听:
  ChatClient.getInstance.presenceManager.removeEventHandler(UNIQUE_HANDLER_ID);
~end
Constructors
- 
          ChatPresenceEventHandler({dynamic onPresenceStatusChanged(List<ChatPresence> list)?})
- ~english The presence manager listener callback.
Properties
- hashCode → int
- 
  The hash code for this object.
  no setterinherited
- 
  onPresenceStatusChanged
  → (dynamic Function(List<ChatPresence> list)?)
- 
  ~english
Occurs when the presence state of a subscribed user changes.
~end
  final
- runtimeType → Type
- 
  A representation of the runtime type of the object.
  no setterinherited
Methods
- 
  noSuchMethod(Invocation invocation) → dynamic 
- 
  Invoked when a nonexistent method or property is accessed.
  inherited
- 
  toString() → String 
- 
  A string representation of this object.
  inherited
Operators
- 
  operator ==(Object other) → bool 
- 
  The equality operator.
  inherited