Styjun

I followed the intructions of React Native Getting Started, in the "Building Projects with Native Code" tab, for Windows and Android.

This is the content of the AwesomeProjectandroidbuild.gradle and after this there is the error I get when I execute: react-native run-android

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript 
 ext 
 buildToolsVersion = "28.0.2"
 minSdkVersion = 16
 compileSdkVersion = 28
 targetSdkVersion = 27
 supportLibVersion = "28.0.0"
 
 repositories 
 google()
 jcenter()
 
 dependencies 
 classpath 'com.android.tools.build:gradle:3.0.1'

 // NOTE: Do not place your application dependencies here; they belong
 // in the individual module build.gradle files
 


allprojects 
 repositories 
 mavenLocal()
 google()
 jcenter()
 maven 
 // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
 url "$rootDir/../node_modules/react-native/android"
 
 



task wrapper(type: Wrapper) 
 gradleVersion = '4.7'
 distributionUrl = distributionUrl.replace("bin", "all")

When I execute: react-native run-android, I get the following error output:

D:studiostudyreactnatvAwesomeProject>react-native run-android
JS server already running.
Building and installing the app on the device (cd android && gradlew.bat installDebug)...

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'AwesomeProject'.
> Could not resolve all artifacts for configuration ':classpath'.
 > Could not find com.android.tools.build:gradle:3.0.1.
 Searched in the following locations:
 https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom
 https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.jar
 https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom
 https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.jar
 Required by:
 project :

* 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 3s
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

Command failed: gradlew.bat installDebug

Error: Command failed: gradlew.bat installDebug
 at checkExecSyncError (child_process.js:616:11)
 at Object.execFileSync (child_process.js:634:13)
 at runOnAllDevices (D:studiostudyreactnatvAwesomeProjectnode_modulesreact-nativelocal-clirunAndroidrunAndroid.js:299:19)
 at buildAndRun (D:studiostudyreactnatvAwesomeProjectnode_modulesreact-nativelocal-clirunAndroidrunAndroid.js:135:12)
 at isPackagerRunning.then.result (D:studiostudyreactnatvAwesomeProjectnode_modulesreact-nativelocal-clirunAndroidrunAndroid.js:65:12)
 at process._tickCallback (internal/process/next_tick.js:68:7)


D:studiostudyreactnatvAwesomeProject>

I checked this US sanctions solution but it did not worked.

What am I doing wrong ?

1) I used a proxy and defined the variables http_proxy and http_proxy on the terminal.

2) Then run the "react-native run-android".

The problem was caused by my location.

Thank to all who answer.

Best regards.

You have to change this line at your project :

dependencies 
classpath 'com.android.tools.build:gradle:3.3.2'