title: Update Gradle in Flutter project
body: <p>I have this project in <strong>Flutter</strong>, but I haven't been able to build an apk for a couple of weeks, because of the Gradle version. I've tried everything, but Flutter always returns the error below:</p>
  <p>I already install every update I found, even though, it shows that the Gradle version is 4.10.2.</p>
  <ul>
  <li>flutter build apk</li>
  </ul>
  <pre><code>...
  FAILURE: Build failed with an exception.
  
  * Where:
  Build file 'C:\Users\israel.gomes\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\audioplayers-0.17.4\android\build.gradle' line: 25
  
  * What went wrong:
  A problem occurred evaluating root project 'audioplayers'.
  &gt; Failed to apply plugin [id 'kotlin-android']
     &gt; The current Gradle version 4.10.2 is not compatible with the Kotlin Gradle plugin. Please use Gradle 5.3 or newer, or the previous version of the Kotlin plugin.
  
  * 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 1s
  
  
  The plugin audioplayers could not be built due to the issue above.
  
  </code></pre>
  <p><em><strong>Here some information about the project status and environment</strong></em>----------------------</p>
  <ul>
  <li>Already changed <em>gradle-wrapper.properties</em> (Current file):</li>
  </ul>
  <pre><code>distributionBase=GRADLE_USER_HOME
  distributionPath=wrapper/dists
  zipStoreBase=GRADLE_USER_HOME
  zipStorePath=wrapper/dists
  distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-all.zip
  </code></pre>
  <ul>
  <li><em>android/build.gradle</em>(Current file):</li>
  </ul>
  <pre><code>buildscript {
      ext.kotlin_version = '1.3.50'
      repositories {
          google()
          jcenter()
      }
  
      dependencies {
          classpath 'com.android.tools.build:gradle:4.0.1'
          classpath &quot;org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version&quot;
      }
  }
  .
  .
  .
  </code></pre>
  <ul>
  <li>gradle --version</li>
  </ul>
  <pre><code>------------------------------------------------------------
  Gradle 5.6.2
  ------------------------------------------------------------
  
  Build time:   2019-09-05 16:13:54 UTC
  Revision:     55a5e53d855db8fc7b0e494412fc624051a8e781
  
  Kotlin:       1.3.41
  Groovy:       2.5.4
  Ant:          Apache Ant(TM) version 1.9.14 compiled on March 12 2019
  JVM:          1.8.0_261 (Oracle Corporation 25.261-b12)
  OS:           Windows 10 10.0 amd64
  
  </code></pre>
  <ul>
  <li>flutter doctor -v</li>
  </ul>
  <pre><code>[√] Flutter (Channel dev, 2.1.0-12.1.pre, on Microsoft Windows [versÃ£o 10.0.19042.867], locale pt-BR)
      • Flutter version 2.1.0-12.1.pre at C:\Flutter
      • Framework revision 8264cb3e8a (3 weeks ago), 2021-03-10 12:37:57 -0800
      • Engine revision 711ab3fda0
      • Dart version 2.13.0 (build 2.13.0-116.0.dev)
  
  [√] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
      • Android SDK at C:\Users\israel.gomes\AppData\Local\Android\Sdk
      • Platform android-30, build-tools 30.0.2
      • ANDROID_HOME = C:\Users\israel.gomes\AppData\Local\Android\Sdk
      • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
      • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
      • All Android licenses accepted.
  
  [√] Chrome - develop for the web
      • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
  
  [√] Android Studio (version 4.0)
      • Android Studio at C:\Program Files\Android\Android Studio
      • Flutter plugin can be installed from:
         https://plugins.jetbrains.com/plugin/9212-flutter
      • Dart plugin can be installed from:
         https://plugins.jetbrains.com/plugin/6351-dart
      • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
  
  [√] IntelliJ IDEA Community Edition (version 2020.3)
      • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.2.3
      • Flutter plugin version 55.0.4
      • Dart plugin version 203.7759
  
  [√] VS Code (version 1.54.3)
      • VS Code at C:\Users\israel.gomes\AppData\Local\Programs\Microsoft VS Code
      • Flutter extension version 3.20.0
  
  [√] Connected device (3 available)
      • Android SDK built for x86 (mobile) • emulator-5554 • android-x86    • Android 7.1.1 (API 25) (emulator)
      • Chrome (web)                       • chrome        • web-javascript • Google Chrome 89.0.4389.114
      • Edge (web)                         • edge          • web-javascript • Microsoft Edge 87.0.664.75
  
  • No issues found!
  
  </code></pre>