Retrieve the @all tag

Invoke getAtAllTag on OIMMessageInfo to obtain the SDK's internal constant string used to identify an all-members mention:

Code example

NSString *tag = [OIMMessageInfo getAtAllTag];

Return value

Returns the constant placeholder string used by the SDK to represent all group members. This string is not a valid user ID and is used to detect whether an incoming group message targets everyone. For constructing all-member messages, refer to Create an @all message.