Centered frame title in beamer

Question

How to set up beamer in a document so that frame titles are centered? Most of the themes seem to use left aligned frame titles.

Answer 1

You can control the title alignment by using the second optional argument of the frametitle template (See page 75 of the beamer documentation):

\documentclass{beamer}
\usetheme{CambridgeUS}

\setbeamertemplate{frametitle}[default][center]

\begin{document}

\begin{frame}
\frametitle{test}
\end{frame}

\end{document}