Gradle with java 8 for retrolambda - Android cant find annotations TargetApi

I am trying to get retrolambda to work with Android build by gradle. The change to java 8 has caused some problems with android annotations. I have tried almost everything from these posts: (Se update 3 before reading all those links) http://code.google.com/p/android/issues/detail?id=55764 https://bitbucket.org/hvisser/android-apt AndroidAnnotations Nothing Generated, Empty Activity Android studio + Gradle + Android Annotations How to compile AndroidAnnotations with Google Android Gradle Plugin? But I keeps getting these erros: Gradle: error: package android.annotation does not exist Gradle: error: cannot find symbol class TargetApi And those gradle warnings: Gradle: : Supported source version 'RELEASE_6' from annotation processor 'com.googlecode.androidannotations.AndroidAnnotationProcessor' less than -source '1.8' Gradle: : The following options were not recognized by any processor: '[androidManifestFile]' This is my build.gradle file using https://stackoverflow.com/a/16802216/860488(link 3 most upvoted solution): ``` buildscript { repositories { mavenCentral() maven { url 'http://download.crashlytics.com/maven' } } dependencies { classpath 'com.android.tools.build:gradle:0.7.+' classpath 'com.google.guava:guava:14.0.1' classpath 'com.crashlytics.tools.gradle:crashlytics-gradle:1.+' classpath 'me.tatarka:gradle-retrolambda:1.1.1' } } repositories { mavenCentral() maven { url 'http://download.crashlytics.com/maven' } } apply plugin: 'android' apply plugin: 'crashlytics' apply plugin: 'retrolambda' ext.daggerVersion = '1.0.0' ext.androidAnnotationsVersion = '2.7.1' configurations { apt } dependencies { compile fileTree(dir: 'libs', include: '*.jar') compile 'com.google.guava:guava:14.0.1' compile 'com.crashlytics.android:crashlytics:1.+' apt "com.googlecode.androidannotations:androidannotations:${androidAnnotationsVersion}" compile "com.googlecode.androidannotations:androidannotations-api:${androidAnnotationsVersion}" apt "com.squareup.dagger:dagger-compiler:${daggerVersion}" compile "com.squareup.dagger:dagger:${daggerVersion}" } android { packagingOptions { //Fix: https://stackoverflow.com/a/20675331/860488 exclude 'META-INF/DEPENDENCIES' exclude 'META-INF/LICENSE' exclude 'META-INF/NOTICE' } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } compileSdkVersion 10 buildToolsVersion "18.0.1" defaultConfig { minSdkVersion 7 targetSdkVersion 10 buildConfigField "boolean", "useProductionServices", "true" } buildTypes { testflight.initWith(buildTypes.debug) debug { packageNameSuffix ".debug" buildConfigField "boolean", "useProductionServices", "false" } testflight { packageNameSuffix ".testflight" buildConfigField "boolean", "useProductionServices", "true" } release { buildConfigField "boolean", "useProductionServices", "true" } } } retrolambda { compile "net.orfjackal.retrolambda:retrolambda:1.1.2" jdk System.getenv("JAVA8_HOME") } android.applicationVariants.all { variant -> aptOutput = file("${project.buildDir}/source/apt_generated/${variant.dirName}") println "****************************" println "variant: ${variant.name}" println "manifest: ${variant.processResources.manifestFile}" println "aptOutput: ${aptOutput}" println "****************************" variant.javaCompile.doFirst { println "*** compile doFirst ${variant.name}" aptOutput.mkdirs() variant.javaCompile.options.compilerArgs += [ '-processorpath', configurations.apt.getAsPath(), '-AandroidManifestFile=' + variant.processResources.manifestFile, '-s', aptOutput ] } } ``` I am using Intellij EDEA 13.0.2. I don't se any output with the content of the println statements in the android.applicationVariants.all - where should I see them? Any clue on how to fix this? Update 1: I have tried debugging the build.gradle with Groovy and every thing is printed fine. The correct paths to build\source\apt_generated\debug for each buildtype. But I am getting some warnings: Creating properties on demand (a.k.a. dynamic properties) has been deprecated and is scheduled to be removed in Gradle 2.0. Please read http://gradle.org/docs/current/dsl/org.gradle.api.plugins.ExtraPropertiesExtension.html for information on the replacement for dynamic properties. Deprecated dynamic property: "aptOutput" on "com.android.build.gradle.internal.api.ApplicationVariantImpl_Decorated@4445b7e3", value: "C:\projectpath...". **************************** variant: debug manifest: C:\projectpath\build\manifests\debug\AndroidManifest.xml aptOutput: C:\projectpath\build\source\apt_generated\debug **************************** Deprecated dynamic property "aptOutput" created in multiple locations. **************************** variant: release manifest: C:\projectpath\build\manifests\release\AndroidManifest.xml aptOutput: C:\projectpath\build\source\apt_generated\release **************************** **************************** variant: testflight manifest: C:\projectpath\build\manifests\testflight\AndroidManifest.xml aptOutput: C:\projectpath\build\source\apt_generated\testflight **************************** And there is no content in the folder apt_generated\debug. Any clue? Update 2: I tried with Dodges answer which produced same output except the warnings, but still no content in the folder apt_generated\debug. Update 3: I found out that the issue is something different that the linked posts are about. It is the android.annotations that it can't find - not androidannotations. But still no solution..