如何使用 \onslide 之类的命令在不同的幻灯片上显示 tikz 和文本？

Question

由于您已经在循环\j内部定义了计数器\foreach，因此用包围节点就足够了\only<\j->{...}。这会产生：

这是您修改后的代码：

\documentclass{beamer}
\usepackage{blindtext}
\usetheme{Madrid}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,
chains,
positioning,
shadows.blur, shapes.arrows}

\begin{document}

\begin{frame}
\frametitle{~}
\begin{block}{~}
\blindtext.
\end{block}
\begin{figure}[H]
    \begin{center}
        \begin{tikzpicture}[
        node distance = 2mm and 7mm,
        nodes = {draw, fill=white, blur shadow},
        arj/.style = {draw=gray, ultra thick,-Straight Barb},
        arr/.style = {single arrow, single arrow head extend=1mm,
            minimum height=9mm, shape border rotate=90,
            node contents={~}},
        box/.style = {text width=0.14\linewidth, align=center,inner sep=2pt,
            minimum height=12mm, font=\scriptsize,
            on chain, join = by  arj},
        ]
        \begin{scope}[start chain = A going right]
        \foreach \txt [count=\j] in   {
            Problem Identification, Statistics, Planning,
            Imple\-men\-ta\-tion of Plans, De\-ve\-lop\-ment
        }
        {
            \only<\j->{\node (m\j) [box] {\txt};}
        }
        \end{scope}
        \end{tikzpicture}
    \end{center}
    \caption{~}
    \caption*{\textit{\textbf{Source:} Self Motivated}}
\end{figure}
\end{frame}
\end{document}

您还可以使用类似以下结构：\only<\j+1>{...}如果您想修改幻灯片出现的“时间”——或者更改计数器的初始值\j。最后，您可以改为使用

\uncover<\j->{\node (m\j) [box] {\txt};}

如果您希望节点在每张幻灯片上停留在相同的位置：

编辑

如果如评论中所示，描述内容在幻灯片之间也有所不同，那么您可以使用\only和\oncover命令的相同技巧。究竟哪个最好，部分取决于个人喜好，部分取决于您的内容，但我可能会使用\uncover：

\documentclass{beamer}
\usetheme{Madrid}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,
chains,
positioning,
shadows.blur, shapes.arrows}

\begin{document}

\begin{frame}
\frametitle{~}
\begin{block}{~}
  \uncover<1->{My explanation for the first box is put here.}

  \uncover<2->{My explanation for the second box is put here.}

  \uncover<3->{My explanation for the third box is put here.}

  \uncover<4->{My explanation for the fourth box is put here.}

  \uncover<5->{My explanation for the fifth box is put here.}
\end{block}
\begin{figure}[H]
    \begin{center}
        \begin{tikzpicture}[
        node distance = 2mm and 7mm,
        nodes = {draw, fill=white, blur shadow},
        arj/.style = {draw=gray, ultra thick,-Straight Barb},
        arr/.style = {single arrow, single arrow head extend=1mm,
            minimum height=9mm, shape border rotate=90,
            node contents={~}},
        box/.style = {text width=0.14\linewidth, align=center,inner sep=2pt,
            minimum height=12mm, font=\scriptsize,
            on chain, join = by  arj},
        ]
        \begin{scope}[start chain = A going right]
        \foreach \txt [count=\j] in   {
            Problem Identification, Statistics, Planning,
            Imple\-men\-ta\-tion of Plans, De\-ve\-lop\-ment
        }
        {
            \uncover<\j->{\node (m\j) [box] {\txt};}
        }
        \end{scope}
        \end{tikzpicture}
    \end{center}
    \caption*{\textit{\textbf{Source:} Self Motivated}}
\end{figure}
\end{frame}
\end{document}

生成结果：

编辑二

如果整个文本块在每张幻灯片之间发生变化，那么您可能需要在块环境上使用修饰符，例如：

\begin{block}{~}<only@1>
  My explanation for the first box is put here.
\end{block}

再次强调，最好的做法取决于你的实际内容，部分取决于个人风格。例如，你可以使用：

\documentclass{beamer}
\usetheme{Madrid}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,
chains,
positioning,
shadows.blur, shapes.arrows}

\begin{document}

\begin{frame}
\frametitle{~}
\begin{block}{~}<only@1>
  My explanation for the first box is put here.
\end{block}
\begin{block}{~}<only@2>
  My explanation for the second box is put here.
\end{block}
\begin{block}{~}<only@3>
  My explanation for the third box is put here.
\end{block}
\begin{block}{~}<only@4>
  My explanation for the fourth box is put here.
\end{block}
\begin{block}{~}<only@5>
  My explanation for the fifth box is put here.
\end{block}

\begin{figure}[H]
    \begin{center}
        \begin{tikzpicture}[
        node distance = 2mm and 7mm,
        nodes = {draw, fill=white, blur shadow},
        arj/.style = {draw=gray, ultra thick,-Straight Barb},
        arr/.style = {single arrow, single arrow head extend=1mm,
            minimum height=9mm, shape border rotate=90,
            node contents={~}},
        box/.style = {text width=0.14\linewidth, align=center,inner sep=2pt,
            minimum height=12mm, font=\scriptsize,
            on chain, join = by  arj},
        ]
        \begin{scope}[start chain = A going right]
        \foreach \txt [count=\j] in   {
            Problem Identification, Statistics, Planning,
            Imple\-men\-ta\-tion of Plans, De\-ve\-lop\-ment
        }
        {
            \uncover<\j->{\node (m\j) [box] {\txt};}
        }
        \end{scope}
        \end{tikzpicture}
    \end{center}
    \caption*{\textit{\textbf{Source:} Self Motivated}}
\end{figure}
\end{frame}
\end{document}

生产

Answer 1