C:\Users\ZeshanAhmed\Desktop\proj\AwesomeProject>react-native run-android
info Starting JS server...
info Building and installing the app on the device (cd android && gradlew.bat app:installDebug)...
ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the `JAVA_HOME` variable in your environment to match the
location of your Java installation.
error Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html
error Command failed: gradlew.bat app:installDebug. Run CLI with --verbose flag for more details.
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user207421
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Zeeshan Ahmed
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1And? Did you do what the error message told you? – Seelenvirtuose Jun 18 '19 at 06:57
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https://stackoverflow.com/questions/2619584/how-to-set-java-home-on-windows-7 – dbz Jun 18 '19 at 06:58
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Possible duplicate of [How to set java\_home on Windows 7?](https://stackoverflow.com/questions/2619584/how-to-set-java-home-on-windows-7) – dbz Jun 18 '19 at 06:58
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2You needn't think you can just dump your error messages here and get a solution. You are expected to exhibit some analysis and some sort of an attempted solution of your own. – user207421 Jun 18 '19 at 07:03
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Did you try something? – dbz Jun 18 '19 at 07:03
1 Answers
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Looks like you probably don't have Java installed. If you do have Java installed, your JAVA_HOME environment variable is not set. Follow the below steps depending on whether you are doing it on linux or Windows.
If you have a terminal, open one and type echo $JAVA_HOME. It should show your java home. If not, you need to set it in the terminal using
export JAVA_HOME=/Path/to/your/Java/home
If you are using Windows, these are the steps - taken from here
Open the Control Panel (Win⊞ + R, type Control Panel, press Enter), and navigate to System and Security > System.
Click on Advanced system settings link in the top left.
Click on the Environment Variables button. A new window will pop up.
In the bottom pane labeled System variables, click the New… button. For the variable name, enter JAVA_HOME.
For the variable value, paste the path to your Java installation path (mostly something like C:\Program Files\Java\jre1.8.X_XXX or C:\Program Files\Java\jdk1.8.X_XXX)
Ashish
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