我如何在切换中 select 选择后显示两个文件上传按钮

How can I show two file upload buttons once I select a choice in a switch

所以我希望在编写以下代码时显示两个文件上传按钮,但只显示其中一个 (file1)。知道如何展示它们吗? I need two have two buttons in one row for uploading files when that specific option in a switch is selected. Shiny 中有这样做的选项吗?

 "Load Manually"= fileInput('file1', 'Choose file to upload',
                                      accept = c(
                                        'text/csv',
                                        'text/comma-separated-values',
                                        'text/tab-separated-values',
                                        'text/plain',
                                        '.csv',
                                        '.tsv'
                                      ), multiple=TRUE


           ),
           fileInput('file2', 'Choose file2 to upload',
                     accept = c(
                       'text/csv',
                       'text/comma-separated-values',
                       'text/tab-separated-values',
                       'text/plain',
                       '.csv',
                       '.tsv'
                     ), multiple= TRUE

           )

    )

这是当前显示的内容:

如果我们使用 fluidRow 我们可以有多个项目:

 "Load Manually"=fluidRow(
            fileInput('file1', 'Choose file to upload',
                      accept = c(
                        'text/csv',
                        'text/comma-separated-values',
                        'text/tab-separated-values',
                        'text/plain',
                        '.csv',
                        '.tsv'
                      ), multiple=TRUE


            ),
            fileInput('file2', 'Choose file2 to upload',
                      accept = c(
                        'text/csv',
                        'text/comma-separated-values',
                        'text/tab-separated-values',
                        'text/plain',
                        '.csv',
                        '.tsv'
                      ), multiple= TRUE

            )
          )

这是它的样子: