title: Error in gradle build after updating Android Studio with log4j
body: <p>I do get these errors after i updated Android Studio and the SDK:</p>
  
  <pre><code>Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$1) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$2) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$3) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$4) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$5) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$6) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.ControlPanel$7) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.Main$1) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.chainsaw.MyTableModel$1) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.util.LogFileParser$1) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LF5SwingUtils$1) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$1) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$10) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$11) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$12) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$13) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$14) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$15) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$16) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$17) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$18) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$19) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$2) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$20) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$21) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$22) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$23) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$24) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$25) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$26) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$27) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  Error:compiler that did not target the modern .class file format. The recommended
  Error:solution is to recompile the class from source, using an up-to-date compiler
  Error:and without specifying any "-target" type options. The consequence of ignoring
  Error:this warning is that reflective operations on this class will incorrectly
  Error:indicate that it is *not* an inner class.
  Error:warning: Ignoring InnerClasses attribute for an anonymous inner class
  Error:(org.apache.log4j.lf5.viewer.LogBrokerMonitor$28) that doesn't come with an
  Error:associated EnclosingMethod attribute. This class was probably produced by a
  </code></pre>
  
  <p>Installed SDK:</p>
  
  <p>All including rev. 25.1.2</p>
  
  <p>Android Studio:</p>
  
  <p>Android Studio 2.0
  Build #AI-143.2739321, built on April 5, 2016
  JRE: 1.7.0_80-b15 amd64</p>
  
  <p>The build.gradle file of the project:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  
  signingConfigs {
      mulco {
          storeFile file("somePath")
          storePassword "..."
          keyAlias "..."
          keyPassword "..."
      }
  }
  
  compileSdkVersion 22
  buildToolsVersion "22.0.1"
  
  def versionPropertiesFile = file('version.properties')
  if (versionPropertiesFile.canRead()) {
      def Properties versionProps = new Properties()
      versionProps.load(new FileInputStream(versionPropertiesFile))
      def code = versionProps['VERSION_CODE'].toInteger() + 1
      versionProps['VERSION_CODE'] = code.toString()
      println('count version up ' + code.toString())
      versionProps.store(versionPropertiesFile.newWriter(), null)
  
      defaultConfig {
          multiDexEnabled true
          signingConfig signingConfigs.mulco
          applicationId "com.test.mulcoandroid"
          minSdkVersion 19
          targetSdkVersion 22
          versionCode code
          versionName "1.03.01"
      }
  } else {
      throw new GradleException("Could not read version.properties!")
  }
  
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          signingConfig signingConfigs.mulco
      }
      debug {
          debuggable true
          signingConfig signingConfigs.mulco
      }
  }
  packagingOptions {
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/NOTICE.txt'
  }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'com.google.android.gms:play-services-maps:8.4.0'
      compile project(':iCommonLibrary')
      compile project(':mulcobluetooth')
      compile project(':iScannerLibrary')
      compile project(':iPictureLibrary')
      compile 'com.android.support:multidex:1.0.1'
      testCompile "junit:junit:4.12"
      compile 'net.lingala.zip4j:zip4j:1.3.2'
  }
  </code></pre>
  
  <p>and of the dependant iCommonLibrary:</p>
  
  <pre><code>apply plugin: 'com.android.library'
  
  android {
  compileSdkVersion 22
  buildToolsVersion "22.0.1"
  
  defaultConfig {
      multiDexEnabled true
      minSdkVersion 16
      targetSdkVersion 22
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  
  packagingOptions {
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/NOTICE.txt'
  }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'com.squareup.retrofit:retrofit:1.9.0'
      compile 'com.squareup.okhttp:okhttp:2.5.0'
      compile 'de.greenrobot:greendao:1.3.7'
      compile 'commons-io:commons-io:2.4'
      compile 'org.apache.commons:commons-lang3:3.3.2'
      compile 'commons-codec:commons-codec:1.10'
      compile 'de.mindpipe.android:android-logging-log4j:1.0.3'
      compile 'org.slf4j:slf4j-api:1.6.4'
      compile 'org.slf4j:slf4j-log4j12:1.6.4'
      compile 'com.google.android.gms:play-services-location:8.4.0'
      compile 'commons-net:commons-net:3.3'
      compile 'com.jjoe64:graphview:4.0.1'
      compile 'com.android.support:support-annotations:22.0.1'
  }
  </code></pre>
  
  <p>build.gradle of iPictureLibrary:</p>
  
  <pre><code>apply plugin: 'com.android.library'
  
  android {
  compileSdkVersion 22
  buildToolsVersion "22.0.1"
  
  defaultConfig {
      minSdkVersion 19
      targetSdkVersion 22
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'it.sephiroth.android.library.horizontallistview:hlistview:1.2.2'
      compile 'com.android.support:appcompat-v7:22.2.0'
      compile 'com.jakewharton:disklrucache:2.0.2'
      compile project(':iCommonLibrary')
  }
  </code></pre>
  
  <p>build.gradle of iScannerLibrary:</p>
  
  <pre><code>apply plugin: 'com.android.library'
  
  android {
  compileSdkVersion 22
  buildToolsVersion "22.0.1"
  
  defaultConfig {
      minSdkVersion 16
      targetSdkVersion 22
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'com.google.zxing:core:3.2.1'
      compile 'com.google.zxing:android-core:3.2.1'
      compile files('libs/GrabbaSDK/Grabba driver for android v1.122.jar')
      compile project(':iCommonLibrary')
  }
  </code></pre>
  
  <p>build.gradle file of mulcobluetooth:</p>
  
  <pre><code>apply plugin: 'com.android.library'
  
  android {
  compileSdkVersion 22
  buildToolsVersion "22.0.1"
  
  defaultConfig {
      minSdkVersion 16
      targetSdkVersion 22
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  
  defaultConfig
  {
      multiDexEnabled true
  }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'org.apache.commons:commons-lang3:3.3.2'
      compile 'commons-io:commons-io:2.4'
  }
  </code></pre>
  
  <p><strong>I hope i provided any important information</strong></p>
  
  <p>If someone does know anything ... please help me! I cannot find anything in this "NEULAND"</p>
  
  <p>Sorry for the long question... Thanks for anyone who has made it up to here.</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>I updated the dependencies to:</p>
  
  <pre><code>compile 'org.apache.logging.log4j:log4j-core:2.5'
  compile 'org.slf4j:slf4j-api:1.7.21'
  compile 'org.slf4j:slf4j-log4j12:1.7.21'
  </code></pre>
  
  <p>But nothing has changed. I still have about 500 build errors .... I deleted mindpipe as reference an coded it by myself ... Nothing happened!</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Opened a ticket:  Issue 206867</p>
  
  <p><a href="https://code.google.com/p/android/issues/detail?id=206867" rel="nofollow noreferrer">https://code.google.com/p/android/issues/detail?id=206867</a></p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>After uninstall Android Studio 2.0 and install 1.5.1 again I get the following warning:</p>
  
  <p>Warning:Gradle version 2.10 is required. Current version is 2.8. If using the gradle wrapper, try editing the distributionUrl in C:\Sources\iRecyApps\iRecyMulco-1.0.1iOS\gradle\wrapper\gradle-wrapper.properties to gradle-2.10-all.zip</p>
  
  <p>So the gradle version was updated by 2... </p>
  
  <p>I informed myself about the current gradle version and it's 2.12</p>
  
  <p>I downloaded both and tried this:</p>
  
  <p>You need to change File > Settings > Builds,Execution,Deployment > Build Tools > Gradle >Gradle home path</p>
  
  <p>On Mac OS, change the path in Android Studio > Preferences > Builds,Execution,Deployment > Build Tools > Gradle >Gradle home</p>
  
  <p>Or set Use default gradle wrapper and edit Project\gradle\wrapper\gradle-wrapper.properties files field distributionUrl like this</p>
  
  <p>according to:</p>
  
  <p><a href="https://stackoverflow.com/questions/34814368/gradle-version-2-10-is-required-error">&quot;Gradle Version 2.10 is required.&quot; Error</a></p>
  
  <p><a href="http://tools.android.com/tech-docs/new-build-system/version-compatibility" rel="nofollow noreferrer">http://tools.android.com/tech-docs/new-build-system/version-compatibility</a></p>
  
  <p>Still nothing</p>