什么原因导致该投影仪块稍微向右偏移？

Question

block我在 中遇到了环境问题beamer。添加tikzpicture似乎会使以下块稍微向右偏移。是什么导致了这种行为？我该如何防止它？

\documentclass{beamer}
\usetheme{Berlin}

\usepackage{tikz}

\begin{document}

% as expected

\begin{frame}{Test}
\begin{block}{centered}
Test
\end{block}

\centering

\begin{tikzpicture}
\node [] (box){%
    dsdsadsad
};
\end{tikzpicture}%

\begin{block}{not properly centered}
Test
\end{block}

\end{frame}

\end{document}

Answer 1

您报告的这个不良水平偏移应归咎于\centering声明，而不是环境；如果您注释掉out 但保留in，那么您的第二个块也会向右偏移。\tikzpicturetikzpicture\centering

编辑： 看percusse 的评论忽略我之前的离题。在这里，只需使用center环境而不是无范围\centering（这会弄乱一切）。

\documentclass{beamer}
\usetheme{Berlin}

\usepackage{tikz}

\begin{document}

\begin{frame}{Smoking the culprit (\texttt{\string\centering}) out\ldots}
\begin{block}{centered}
Test
\end{block}

\centering           %<---- this causes the horizontal offset...

%\begin{tikzpicture} %<--- not the tikzpicture
%\node [] (box){%
%    dsdsadsad
%};
%\end{tikzpicture}%

\begin{block}{not properly centered}
Test
\end{block}
\end{frame}

\begin{frame}{Using a \texttt{center} environment instead}
\begin{block}{centered}
  Test
\end{block}

\begin{center}
    \begin{tikzpicture}
    \node [] (box){%
        dsdsadsad
    };
    \end{tikzpicture}%
\end{center}

\begin{block}{not properly centered}
  Test
\end{block}
\end{frame}

\end{document}