我的环境如下

• Android Studio，通过系统软件包管理器安装（在Arch Linux上是Pacman）
• Ungoogled Chromium，通过Flatpak安装

现在我想在Ungoogled Chromium中从Android Studio启动一个Flutter应用。不过，在顶部栏的下拉菜单中我不能选择Chrome。只显示“Linux (desktop)”，而这个我用不了，因为该项目没有为它做好设置。

Flutter doctor的输出如下：

> flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.41.4, on Arch Linux 6.19.8-arch1-1, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0)
[✗] Chrome - develop for the web (Cannot find Chrome executable at google-chrome)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[✗] Linux toolchain - develop for Linux desktop
    ✗ CMake is required for Linux development.
      It is likely available from your distribution (e.g.: apt install cmake), or can be downloaded from https://cmake.org/download/
[✓] Connected device (1 available)
[✓] Network resources

! Doctor found issues in 2 categories.

Flutter需要一个Chrome可执行文件，而不是一个命令。但我不能直接指定一个chrome的可执行文件，因为它在Flatpak里运行。我该如何处理这个？

解决方案

我们可以通过创建一个shell脚本来变通这个必需的可执行文件

#!/usr/bin/env bash
flatpak run io.github.ungoogled_software.ungoogled_chromium "$@"

把它创建在一个对你有用的位置，然后让它可执行。我把它命名为“chromium”。然后把环境变量设置为该脚本的位置

chmod +x chromium
export CHROME_EXECUTABLE="/my/path/to/chromium"

再次运行 flutter doctor，它应该就能识别到了。

> flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.41.4, on Arch Linux 6.19.8-arch1-1, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0)
[✓] Chrome - develop for the web
[✗] Linux toolchain - develop for Linux desktop
    ✗ CMake is required for Linux development.
      It is likely available from your distribution (e.g.: apt install cmake), or can be downloaded from https://cmake.org/download/
[✓] Connected device (2 available)
[✓] Network resources

! Doctor found issues in 1 category.

现在我们需要让环境变量保持持久。根据你启动Android Studio的方式，方法会有差异。如果你是通过开始菜单启动（也就是通过一个 .desktop 文件），你可以简单地把以下行添加到 ~/.local/share/applications/android-studio.desktop

Exec=env CHROME_EXECUTABLE=/my/path/to/chromium android-studio %f

关闭Android Studio并通过开始菜单重新启动后，右上角会出现“Chrome (web)”配置。