Build failed of react-native project

Question

When i try to build a react-native project this error happens:

info Starting JS server...
info Building and installing the app on the device (cd android && gradlew.bat ap
p:installDebug)...

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> SDK location not found. Define location with an ANDROID_SDK_ROOT environment v
ariable or by setting the sdk.dir path in your project's local properties file a
t 'D:\COURSES\React Native - The Practical Guide\myFirstApp\android\local.proper
ties'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 4s
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.

I can't run the project on Genymotion because of this problem .

Answer 1

You have to set the path of the Android SDK in the local.properties file in the root of the react native project. I suggest you to take a look at the second answer of this question SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable

Answer 2

as mentioned in error message, there is no Android SDK installed. try install android SDK and ensure ANDROID_SDK_ROOT has defined and pointed to the correct directory.

The simple way, try install android studio