Could not find tools.jar React Native Android In windows 10

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guys . i just try to install react native in my laptop. i've followed all setup instruction but i stiil get those error .

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Could not find tools.jar

i used genymotion with os version 5.1.0, i've setup environment variable for android_home. Any idea what i miss here ?


"Could not find tools.jar." error with react-native run-android even in , after running react-native info. Environment: OS: Windows 10. Node: 8.10.0. Yarn​: 1.5.1 npm: 5.6.0. Watchman: Not Found Xcode: N/A Android  A workaround for this problem I’ve found is setting your JAVA_HOME to the default JDK location specified in Android Studio. Open Android Studio. Press Ctrl+Alt+Shift+S to open Project Structure window. Set your JAVA_HOME environment variable to the path specified under “JDK location”.


Setting up appropriate JDK (not JRE. JRE does not have tools.jar) version (E.g. JDK 1.7x) path as the JAVA_HOME would resolve this issue.

Please check your computer's environment variables and set JAVA_HOME if it has not already been setup.

"Could not find tools.jar." error with react-native run-android · Issue , Yes Environment Environment: OS: Windows 10 Node: 8.9.1 Yarn: 1.3.2 npm: 5.5​.1 Watchman: Not Found Xcode: N/A Android Studio: Version  Restart any command prompts or restart the computer. react-native run-android worked fine after that. facebook locked as resolved and limited conversation to collaborators Apr 19, 2019 react-native-bot added the Resolution: Locked label Apr 19, 2019


I'm gonna go on a long shot here. There is a tools.jar in java libs folder.[the java sdk that is]

Usually all these frameworks and ides have a lib folder themselves. and it is missing said tools.jar. Just copy paste it there.

Could not find tools.jar React Native Android In windows 10 , guys . i just try to install react native in my laptop. i've followed all setup instruction but i stiil get those error . * What went wrong: Execution failed  This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people.


I had the same problem while running react-native run-android it gave me the error tool.jar not found. i solved this by adding a single line mentioned below, in gradle.properties file which is in android project. org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_121

Could not find tools.jar React Native Android In windows 10, I had the same problem while running react-native run-android it gave me the error tool.jar not found. i solved this by adding a single line mentioned below,  Dismiss Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.


If you have the Android Studio embedded JDK, then it may cause conflicts. A workaround for this problem I've found is setting your JAVA_HOME to the default JDK location specified in Android Studio.

  1. Open Android Studio
  2. Press Ctrl+Alt+Shift+S to open Project Structure window.
  3. Set your JAVA_HOME environment variable to the path specified under "JDK location".

Gradle doesn't run because it can't find tools.jar in JRE, Gradle doesn't run because it can't find tools.jar in JRE and tutorials on Android Developments with handcrafted resources by Wajahat Karim. Install the JDK from the Oracle website with the same version number as the JRE if you didn't already. Furthermore add JAVA_HOME to the environment variables of Windows. Restart your terminal or development environment to load the new JAVA_HOME value.


Errors when getting started with React Native : reactnative, I'm trying to get started with React Native and I've been getting several errors but this last one I cannot seem I have Node 12, Yarn 1.16 on Windows 10 and I'm trying to run the command 'react-native run-android'. Could not find tools.jar. React Native Windows installation - could not find react-native-windows@0.41.* I was now able to initialize windows for react native. – Juniuz Feb 10 '17 at 2


Gradle not finding java tools.jar - Help/Discuss, I installed Gradle 2.7 in my C:\ directory for Windows 7. Created a But changing forward slash still gives error “Could not find tools.jar.” sterling (Sterling  Ne pouvait pas trouver des outils.jar React natif Android sous windows 10 les gars . je viens d'essayer d'installer réagir natif dans mon ordinateur portable. j'ai suivi toutes les instructions de configuration, mais j'ai toujours ces erreurs .


* What went wrong: Execution failed for task ':app , Could not find tools.jar. I am not using android studio, just using sdk tool and I am getting this error, please help me to resolve this . thank you. Installing React Native on Windows Tutorial admin May 31, 2017 May 31, 2017 React Native Getting Started with React Native Development on Windows XP, Vista, 7, 8.1, 10 for android application development beginners step by step guide.