关于环信的消息回撤

在长按消息cell手势里面判断时间是否显示撤回菜单，具体在demo里面有实现：//验证是否符合2分钟内消息撤销

- (BOOL)canRevokeMessage {

    if (!_isNetConnect ||

        ![[EaseMob sharedInstance].chatManager isConnected] ||

        !self.menuIndexPath ||

        self.menuIndexPath.row <= 0)

    {

        return NO;

    }

    id<IMessageModel> model = [self.dataArray objectAtIndex:self.menuIndexPath.row];

    return [EaseMessageHelper canRevokeMessage:model.message];

}