删除小节幻灯片上的编号

Question

我正在准备论文答辩幻灯片，但无法删除显示子部分名称的幻灯片（幻灯片 5 和 7）中的编号。 我尝试修改我正在使用的大都会模板，但没有成功。 有谁知道怎么做吗？

非常感谢您的帮助！

 \documentclass{beamer}
\usetheme[progressbar=frametitle, sectionpage=progressbar, subsectionpage=progressbar, block=fill]{metropolis}
\setbeamertemplate{footline}{}
\setbeamertemplate{navigation symbols}{%
    \ifnum\insertframenumber>0
         \normalsize\insertframenumber%
    \fi%
}
 
\title{Title}
\subtitle{Sub-title}
\date{\today}
\author{author}
\institute{institute}
 
 
\AtBeginSection[]
{
    \setbeamertemplate{navigation symbols}{}
    \frame[plain,c,noframenumbering]{
        \sectionpage
        \tableofcontents[currentsection,subsectionstyle=hide]}
    \setbeamertemplate{navigation symbols}{\normalsize\insertframenumber}
}
 
\makeatletter
 
\setbeamertemplate{section in toc}[sections numbered]
\setbeamertemplate{subsection in toc}[subsections numbered]
 
\makeatother
 
\begin{document}
  \maketitle
 
\section{First section}
 
\begin{frame}
Content 
\end{frame}
 
\section{Second section}
\subsection{First sub section}
\begin{frame}
Content 
\end{frame}   
 
\subsection{Second sub section}
\begin{frame}
Content 
\end{frame} 
 
 
\section{Third section}
\end{document}

Answer 1

有趣的巧合，几个小时前我刚刚在 https://topanswers.xyz/tex?q=2047#a2293

回答了基本相同的问题

 \documentclass{beamer}
\usetheme[progressbar=frametitle, sectionpage=progressbar, subsectionpage=progressbar, block=fill]{moloch}% modern fork of the metropolis theme
\setbeamertemplate{footline}{}
\setbeamertemplate{navigation symbols}{\normalsize\insertframenumber}
 
\title{Title}
\subtitle{Sub-title}
\date{\today}
\author{author}
\institute{institute}
 
\AtBeginSection[]
{
    \setbeamertemplate{navigation symbols}{}
    \frame[plain,c,noframenumbering]{
        \sectionpage
        \tableofcontents[currentsection,subsectionstyle=hide]}
    \setbeamertemplate{navigation symbols}{\normalsize\insertframenumber}
}
 
\makeatletter
 
\setbeamertemplate{section in toc}[sections numbered]
\setbeamertemplate{subsection in toc}[subsections numbered]
 
\patchcmd{\ps@empty}{\usebeamertemplate***{navigation symbols}}{}{}{} 
 
\makeatother
 
\begin{document}
  \maketitle
 
\section{First section}
 
\begin{frame}
Content 
\end{frame}
 
\section{Second section}
\subsection{First sub section}
\begin{frame}
Content 
\end{frame}   
 
\subsection{Second sub section}
\begin{frame}
Content 
\end{frame} 
 
\section{Third section}
\end{document}