title: React-Native-Could not resolve all files for configuration ':classpath'. Could not find com.android.tools.build:gradle:3.4.1
body: <p>I tried <a href="https://stackoverflow.com/questions/50384733/react-native-could-not-resolve-all-dependencies-for-configuration-classpath">this solution on StackOverflow</a> but didn't work.</p>
  
  <p>I am using Ubuntu 18.04 LTS, Android-Studio-3, Java-1.8,
  Gradle-3.4.1.</p>
  
  <p><a href="https://github.com/ganesh-deshmukh/goods-seller/" rel="nofollow noreferrer">Github-repo link </a> of my project. 
  I am building React-Native App, after <code>npm run eject</code>, I can't run <code>npm run android</code>. </p>
  
  <p>I was able to run a <a href="https://github.com/ganesh-deshmukh/goods-seller/" rel="nofollow noreferrer">project</a> before ejecting app
  but an error occurs when I run <code>npm run android</code>,</p>
  
  <pre><code>(base) gd@gd10:~/Desktop/react-native/demo_app$ npm run android
  
  &gt; @ android /home/gd/Desktop/react-native/demo_app
  &gt; react-native run-android
  
  Scanning folders for symlinks in /home/gd/Desktop/react-native/demo_app/node_modules (9ms)
  JS server already running.
  Building and installing the app on the device (cd android &amp;&amp; ./gradlew installDebug)...
  Download https://jcenter.bintray.com/de/undercouch/gradle-download-task/3.1.2/gradle-do
  wnload-task-3.1.2.pom
  Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcore/4.4.4/httpcore-
  4.4.4.pom
  Download https://jcenter.bintray.com/org/apache/httpcomponents/httpcomponents-core/4.4.
  4/httpcomponents-core-4.4.4.pom
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  A problem occurred configuring root project 'goods_seller'.
  &gt; Could not resolve all files for configuration ':classpath'.
     &gt; Could not find com.android.tools.build:gradle:3.4.1.
       Searched in the following locations:
           https://jcenter.bintray.com/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.pom
           https://jcenter.bintray.com/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.jar
           https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.pom
           https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.jar
       Required by:
           project :
     &gt; Could not find com.android.tools.build:gradle:3.4.1.
       Searched in the following locations:
           https://jcenter.bintray.com/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.pom
           https://jcenter.bintray.com/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.jar
           https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.pom
           https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.1/gradle-3.4.1.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 31s
  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
  </code></pre>
  
  <p>It fails to build gradle, and could not find gradle, though I have installed gradle using <code>sudo apt-get install gradle</code>.</p>
  
  <p>It gives same output on running with flag <code>--stactrace</code>,</p>
  
  <p><code>gradle -v</code> output is </p>
  
  <pre><code>(base) gd@gd10:~/Desktop/react-native/demo_app$ gradle -v
  
  ------------------------------------------------------------
  Gradle 3.4.1
  ------------------------------------------------------------
  
  Build time:   2012-12-21 00:00:00 UTC
  Revision:     none
  
  Groovy:       2.4.15
  Ant:          Apache Ant(TM) version 1.10.3 compiled on July 19 2018
  JVM:          1.8.0_201 (Oracle Corporation 25.201-b09)
  OS:           Linux 4.15.0-45-generic amd64
  
  (base) gd@gd10:~/Desktop/react-native/demo_app$ 
  </code></pre>
  
  <p><code>demo_app/android/build.gradle</code> file is</p>
  
  <pre><code>// Top-level build file where you can add configuration options common to all sub-projects/modules.
  
  buildscript {
      ext {
          buildToolsVersion = "27.0.3"
          minSdkVersion = 16
          compileSdkVersion = 24
          targetSdkVersion = 26
          supportLibVersion = "27.1.1"
      }
      repositories {
          jcenter()
          google()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:3.4.1'
  
          classpath 'com.android.tools.build:gradle:2.2.2'
          classpath 'de.undercouch:gradle-download-task:3.1.2'
          // NOTE: Do not place your application dependencies here; they belong
          // in the individual module build.gradle files
      }
  }
  
  allprojects {
      repositories {
          mavenLocal()
          jcenter()
          maven {
              // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
              url "$rootDir/../node_modules/react-native/android"
          }
          google()
      }
  }
  
  
  task wrapper(type: Wrapper) {
      gradleVersion = '4.4'
      // gradleVersion = '4.10.3'
      distributionUrl = distributionUrl.replace("bin", "all")
  }
  </code></pre>
  
  <p><strong>Edit 1:</strong></p>
  
  <p>after answer from <a href="https://stackoverflow.com/users/8856315/cod-e-rection">cod-e-rection</a>, </p>
  
  <p>I changed code as</p>
  
  <pre><code>dependencies {
  classpath 'com.android.tools.build:gradle:3.3.2'
  }
  </code></pre>
  
  <p>then after running <code>npm run android</code>,
  it gave error as,</p>
  
  <pre><code>* What went wrong:
  A problem occurred evaluating project ':app'.
  &gt; Failed to apply plugin [id 'com.android.application']
     &gt; Minimum supported Gradle version is 4.10.1. Current version is 4.4. If using the gradle wrapper, try editing the distributionUrl in /home/gd/Desktop/react-native/demo_app/android/gradle/wrapper/gradle-wrapper.properties to gradle-4.10.1-all.zip
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/7IwnP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7IwnP.png" alt="screenshot"></a></p>