Itemize within itemize and reducing indent in beamer

Question

I'm having this problem with itemize.

I am preparing a presenation in beamer which requires an itemize within an itemize.

Because of space constraints, I wanted to reduce the identation in the inner itemize through the command \setlength{\itemindent}{-.2in}.

However, if I have an item that I create for the inner itemize that requires 2 lines, the second line does not follow the indentation I set for the items in the inner itemize.

For example:

• Point A
  • Point B is too long, would need a new line
    for it

The example above is what I want, but, what I get is that the 2nd line "for it" is shifted to the right, i.e. it's not aligned with Point B from the line above.

Is there a way to fix this? Thanks!

Edit:

Here is the code I have with the screenshot for the output:

        \begin{itemize}

        \setlength{\itemindent}{-.2in}
        \item Point A1: 

            \begin{itemize}
            \setlength{\itemindent}{-.2in}
                 \item Point B is so long that it needs two lines 
                 \item 
            \end{itemize}                           

        \item Point A2:

        \item Point A3:         

    \end{itemize}

As you can see above, the "needs two lines" is not aligned with Point B.

Answer 1

Don't change the \itemindent but the \leftmargini (for the first level list) or \leftmarginii (second level list).

\documentclass{beamer}

\begin{document}

\begin{frame}
\setlength{\leftmargini}{0.5cm}
\setlength{\leftmarginii}{0.5cm}
        \begin{itemize}

%        \setlength{\itemindent}{-.2in}
        \item Point A1: 

            \begin{itemize}
%            \setlength{\itemindent}{-.2in}
                 \item Point B is so long that it needs two lines longer longer longer longer longer 
                 \item 
            \end{itemize}                           

        \item Point A2:

        \item Point A3:         

    \end{itemize}

\end{frame} 

\end{document}