ios.环信头像问题

- (instancetype)initWithConversationChatter:(NSString *)conversationChatter conversationType:(EMConversationType)conversationType

{

    if ([conversationChatter length] == 0) {

        return nil;

    }

    self = [super initWithStyle:UITableViewStylePlain];

    if (self) {

        self.conversation = [[EMClient sharedClient].chatManager getConversation:conversationChatter type:conversationType createIfNotExist:YES];

        self.messageCountOfPage = 10;

        self.timeCellHeight = 30;

        self.deleteConversationIfNull = YES;

        self.scrollToBottomWhenAppear = YES;

        self.messsagesSource = [NSMutableArray array];

        self.delegate = self;

        self.dataSource = self;

        [self.conversation markAllMessagesAsRead];

    }

    return self;

}