addEventHandler method
~english Adds the presence event handler. After calling this method, you can handle for new presence event when they arrive.
Param identifier
The custom handler identifier, is used to find the corresponding handler.
Param handler
The handle for presence event. See EMPresenceEventHandler.
~end
~chinese 添加用户状态变化监听器。
Param identifier
事件 ID。
Param handler
Presence 事件。
~end
Implementation
void addEventHandler(
String identifier,
EMPresenceEventHandler handler,
) {
_eventHandlesMap[identifier] = handler;
}