在 Mac 上使用 Android Studio 中捆绑的 JDK 作为 JAVA_HOME [英] Using JDK that is bundled inside Android Studio as JAVA_HOME on Mac

问题描述

我尝试打开 Android 设备监视器，Studio 向我显示了此消息 =-O:

I tried to open Android Device Monitor and the Studio showed me this message =-O :

这让我很惊讶，因为如果我没有安装任何 Java，我怎么能够开发 Android 应用程序?！实际上，Android Studio 附带了捆绑的 JDK/JRE(位于 /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home)，但系统找不到它:执行 <代码>usr/libexec/java_home 给出

It surprised me, because how have I been able to develop Android apps if I didn't have any Java installed?! Actually, Android Studio comes with bundled JDK/JRE (located in /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home), but it is not found by the system: executed usr/libexec/java_home gives

Unable to find any JVMs matching version "(null)".
No Java runtime present, try --request to install.

将 $JAVA_HOME 设置为 /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home 没有帮助 — source .bash_profile不喜欢它是一个目录.

Setting $JAVA_HOME to /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home did not help — source .bash_profile doesn't like that it's a directory.

问题:如果我已经在 Android Studio 中安装了新的 JDK，我不想安装新的 JDK.如何将其设置为系统默认值?

QUESTION: I don't want to install new JDK if I already have one inside Android Studio. How do I set it as system default?

推荐答案

将正确的字符串添加到 .bash_profile(并使用 source .bash_profile 重新加载):

Add the correct string to .bash_profile (and reload with source .bash_profile):

1. Big Sur 之前的 MacOS 版本:export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/jdk/Contents/Home/.
2. Catalina、Big Sur、Mentere 及以上:export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/Contents/Home

如果您使用 Catalina 及以上版本，您很可能使用 zsh 作为 shell 而不是 bash.在这种情况下，请将其添加到您的主目录中的 .zshrc 或 .zprofile 而不是 .bash_profile.

If you're using Catalina and above, you most probably use zsh as a shell instead of bash. In that case, add it to .zshrc or .zprofile instead of .bash_profile in your home directory.

之后不要忘记重新启动操作系统.

Don't forget to restart the operating system after.

之后，运行 java -version 给出了这个输出，Java 开始正常执行:

After that, running java -version gave this output and Java started to execute normally:

openjdk version "1.8.0_112-release"
OpenJDK Runtime Environment (build 1.8.0_112-release-b06)
OpenJDK 64-Bit Server VM (build 25.112-b06, mixed mode)

至于 Android Device Monitor——它仍然需要这个古老的 JRE 版本 6.

As for the Android Device Monitor — it still demands this ancient JRE version 6.

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