Beamer + subfigure numbering

Question

When using beamer with the subfigure package, the subfigure labels (a), (b) etc. are not reset at the beginning of a new figure.

Example:

    \documentclass{beamer}
    \usepackage{subfigure}  
    \begin{document}


    \begin{frame}
        \begin{figure}[htbp]
            \centering
            \subfigure[Text 1]{Testing subfigure}

            \subfigure[Text 2]{Testing subfiguare even more}      
        \end{figure}
    \end{frame}

    \begin{frame}
        \begin{figure}[htbp]
            \centering
            \subfigure[Text 1]{Testing subfigure}

            \subfigure[Text 2]{Testing subfiguare even more}      
        \end{figure}
    \end{frame}

    \end{document}

How can I fix this?

Answer 1

With beamer's heavily redefined environments and macros to its custom overlay specification, the subfigure counter does not reset at the start of every figure environment. Easiest is to insert

\setcounter{subfigure}{0}% Reset subfigure counter

between the two frames (or before the next frame). If you're willing to have the frame be the designated "master" counter, you could add

\makeatletter
\@addtoreset{subfigure}{framenumber}% subfigure counter resets every frame
\makeatother

at your document start. Alternatively, if you want to tie the subfigure counter to a figure (rather than a frame), you could use

\usepackage{etoolbox}% http://ctan.org/pkg/etoolbox
\AtBeginEnvironment{figure}{\setcounter{subfigure}{0}}% Resets subfigure counter at start of figure environment