Error in gradle build after updating Android Studio with log4j

Question

I do get these errors after i updated Android Studio and the SDK:

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 

Installed SDK:

All including rev. 25.1.2

Android Studio:

Android Studio 2.0 Build #AI-143.2739321, built on April 5, 2016 JRE: 1.7.0_80-b15 amd64

The build.gradle file of the project:

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' } 

and of the dependant iCommonLibrary:

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' } 

build.gradle of iPictureLibrary:

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') } 

build.gradle of iScannerLibrary:

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') } 

build.gradle file of mulcobluetooth:

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' } 

I hope i provided any important information

If someone does know anything ... please help me! I cannot find anything in this "NEULAND"

Sorry for the long question... Thanks for anyone who has made it up to here.

EDIT:

I updated the dependencies to:

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' 

But nothing has changed. I still have about 500 build errors .... I deleted mindpipe as reference an coded it by myself ... Nothing happened!

EDIT:

Opened a ticket: Issue 206867

https://code.google.com/p/android/issues/detail?id=206867

EDIT:

After uninstall Android Studio 2.0 and install 1.5.1 again I get the following warning:

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

So the gradle version was updated by 2...

I informed myself about the current gradle version and it's 2.12

I downloaded both and tried this:

You need to change File > Settings > Builds,Execution,Deployment > Build Tools > Gradle >Gradle home path

On Mac OS, change the path in Android Studio > Preferences > Builds,Execution,Deployment > Build Tools > Gradle >Gradle home

Or set Use default gradle wrapper and edit Project\gradle\wrapper\gradle-wrapper.properties files field distributionUrl like this

according to:

"Gradle Version 2.10 is required." Error

http://tools.android.com/tech-docs/new-build-system/version-compatibility

Still nothing

Answer 1

Add this line to proguard-rules.pro

-keepattributes EnclosingMethod 

---

This error may happen almost all classes which has InnerClasses, I think. (like support.v4 etc) for me.

---

I've tested on Android studio 2.2
(Not tested log4j. Tested support.v4 etc.)

build.gradle

compileSdkVersion 24 buildToolsVersion "24.0.2" ... minifyEnabled true proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' ... dependencies {     ...     compile 'com.android.support:support-v4:24.2.1' } 

---

getDefaultProguardFile('proguard-android-optimize.txt') also works.

Answer 2

I was also facing this same error. It was driving me crazy because the error count was >1K. And I was getting these errors on release build with proguard enabled.

After doing some digging I found that adding -keepattributes EnclosingMethod in your proguard-rules.pro file all these error will be gone.

Source: Thread and Issue #294 on GitHub.