addChatManagerListener method Null safety

void addChatManagerListener(
  1. EMChatManagerListener listener
)

Adds the chat manager listener. After calling this method, you can listen for new messages when they arrive.

Param listener The chat manager listener that listens for new messages. See {@link EMChatManagerListener}.

Implementation

void addChatManagerListener(EMChatManagerListener listener) {
  _listeners.remove(listener);
  _listeners.add(listener);
}