android - Execution failed for task ':app:compileDebugJavaWithJavac' react native

Question

I am trying to run react native app on my android device like this in cmd

cd C:UsersUserDesktopjs

react-native run-android

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':app:compileDebugJavaWithJavac'.

  Could not find tools.jar

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 5.243 secs 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/android-setup.html

Can anyone please tell me how to fix this problem?

Answer 1

Use the following step once, it may help you:

step 1: open cmd through administrator

step 2: navigate to your application by cd <path to your project>

step 3: run this command: ./gradlew clean

step 4: react-native run-android