title: Gradle successfully build but no apk file generated
body: <p>Firstly, i need to explain what I am doing, I am building an aar, which will be running on another app calling an activity belongs to the aar.
  The aar is  running fine. So it is time for me to try to hide away the aar source code using proguard. However, I can successfully build, but no apk is generated. Anyone know why? I have attached info maybe needed below, please ask if I missed anything. Only if debug without using proguard, I can see there is apk generated.</p>
  
  <p>Gradle:</p>
  
  <pre><code>apply plugin: 'com.android.library'
  
  android {
      signingConfigs {
          release {
              keyAlias KEY_ALIAS
              keyPassword KEY_PASSWORD
              storePassword STORE_PASSWORD
              storeFile file(STORE_FILE)
          }
      }
  
      compileSdkVersion 23
      buildToolsVersion "23.0.3"
  
      defaultConfig {
          minSdkVersion 15
          targetSdkVersion 23
          versionCode 1
          versionName "1.0"
  
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  
      }
      buildTypes {
          release {
              debuggable false
              minifyEnabled true
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
              buildConfigField "boolean", "LOGGABLE", "false"
              signingConfig signingConfigs.release
          }
          debug {
              debuggable true
              minifyEnabled false            
          }
          pre_release {
              debuggable true
              signingConfig signingConfigs.release
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
              buildConfigField "boolean", "LOGGABLE", "true"
          }
      }
  
      //sourceSets.main.jni.srcDirs = []
      // disable automatic ndk-build call, which ignore our Android.mk
      sourceSets.main.jniLibs.srcDir 'src/main/libs'
  
      packagingOptions {
          exclude 'META-INF/DEPENDENCIES.txt'
          exclude 'META-INF/LICENSE.txt'
          exclude 'META-INF/NOTICE.txt'
          exclude 'META-INF/NOTICE'
          exclude 'META-INF/LICENSE'
          exclude 'META-INF/DEPENDENCIES'
          exclude 'META-INF/notice.txt'
          exclude 'META-INF/license.txt'
          exclude 'META-INF/dependencies.txt'
          exclude 'META-INF/LGPL2.1'
      }
      externalNativeBuild {
          ndkBuild {
              path 'src/main/jni/Android.mk'
          }
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
          exclude group: 'com.android.support', module: 'support-annotations'
      })
      compile 'com.android.support:appcompat-v7:23.4.0'
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:multidex:1.0.1'
      compile files('libs/pass-v1.2.1.jar')
      compile files('libs/sdk-v1.0.0.jar')
  
  
      compile 'com.squareup.picasso:picasso:2.5.2'
      compile 'com.android.support:multidex:1.0.1'
      compile 'com.android.support:appcompat-v7:23.4.0'
      compile 'com.android.support:design:23.4.0'
      compile 'com.android.support:recyclerview-v7:23.4.0'
      compile 'com.android.support:support-v4:23.4.0'
      compile 'com.squareup.picasso:picasso:2.5.2'
      compile 'de.hdodenhof:circleimageview:2.0.0'
      compile 'io.card:android-sdk:5.3.4'
      compile 'com.jakewharton:butterknife:7.0.0'
      compile 'com.squareup.retrofit2:retrofit:2.1.0'
      compile 'com.squareup.retrofit2:converter-gson:2.1.0'
      compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
      compile 'com.squareup.okhttp3:okhttp:3.3.1'
      compile 'com.squareup.okhttp3:logging-interceptor:3.3.1'
      compile 'io.reactivex:rxjava:1.1.3'
      compile 'io.reactivex:rxandroid:1.1.0'
      compile 'com.j256.ormlite:ormlite-android:4.48'
      compile 'com.j256.ormlite:ormlite-core:4.48'
      compile 'com.soundcloud.android:android-crop:1.0.0@aar'
      compile 'cn.pedant.sweetalert:library:1.3'
  
      compile 'com.github.PhilJay:MPAndroidChart:v2.2.0'
      compile 'com.makeramen:roundedimageview:2.2.1'
      compile 'com.splunk.mint:mint:5.0.0'
      compile 'com.facebook.stetho:stetho:1.3.1'
      compile 'com.facebook.stetho:stetho-okhttp3:1.3.1'
      compile 'pl.droidsonroids.gif:android-gif-drawable:1.2.0'
      compile 'com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.0'
      compile 'com.loopeer.library:cardstack:1.0.1'
      compile 'net.danlew:android.joda:2.9.4.1'
  
  
  //    compile 'com.google.android.gms:play-services:9.6.1'  //commented to avoid app crash on xiomi devices, extended application to multi dex app
  //    compile 'com.google.android.gms:play-services-gcm:8.4.0'
      compile 'com.google.android.gms:play-services-gcm:9.6.1'
      compile 'com.google.android.gms:play-services-location:9.6.1'
      compile 'com.google.android.gms:play-services-maps:9.6.1'
      compile 'com.jakewharton:butterknife:7.0.0'
      compile project(path: ':app')
      compile project(path: ':app')
      compile project(path: ':app')
      compile project(path: ':app')
  
  }
  </code></pre>
  
  <p>proguard rules:</p>
  
  <pre><code>-dontwarn org.joda.convert.FromString
  -dontwarn org.joda.convert.ToString
  
  
  
  #GSON 2.2.4 specific rules ##
  
  # Gson uses generic type information stored in a class file when working with fields. Proguard
  # removes such information by default, so configure it to keep all of it.
  -keepattributes Signature
  
  # For using GSON @Expose annotation
  -keepattributes *Annotation*
  
  -keepattributes EnclosingMethod
  
  # Gson specific classes
  -keep class sun.misc.Unsafe { *; }
  -keep class com.google.gson.stream.** { *; }
  
  
  # keep samsung sdk classes
  # -keep class com.samsung.android.**{*;}
   -dontwarn com.samsung.android.**
   -dontnote com.samsung.android.**
  
  
  #for fabric Crashlytics
  -keep class com.crashlytics.** { *; }
  -keep class com.crashlytics.android.**
  -keepattributes SourceFile, LineNumberTable, *Annotation*
  
  
  # Butter Knife
  -keep class butterknife.** { *; }
  -keep class **$$ViewBinder { *; }
  -dontwarn butterknife.internal.**
  
  -keepclasseswithmembernames class * {
      @butterknife.* &lt;fields&gt;;
  }
  
  -keepclasseswithmembernames class * {
      @butterknife.* &lt;methods&gt;;
  }
  
  #ormlite new
  # for ormlite stuff
  -keep class com.j256.**
  -keepclassmembers class com.j256.** {*;}
  -keep enum com.j256.**
  -keepclassmembers enum com.j256.**  {*;}
  -keep interface com.j256.**
  -keepclassmembers interface com.j256.**  {*;}
  
  # keep the classes and members of our entities or OrmLite will not work
  -keep class com.korvac.liquid.model.**
  -keepclassmembers com.korvac.liquid.model.** {*;}
  -keep class com.korvac.liquid.activity.**
  -keepclassmembers com.korvac.liquid.activity.** {*;}
  
  # OrmLite
  -keep class com.j256.**
  -keepclassmembers class com.j256.** { *; }
  -keep enum com.j256.**
  -keepclassmembers enum com.j256.** { *; }
  -keep interface com.j256.**
  -keepclassmembers interface com.j256.** { *; }
  
  # Picasso
  -dontwarn com.squareup.okhttp.**
  
  #Retrofit
  # Retrofit 2.X
  ## https://square.github.io/retrofit/ ##
  
  -dontwarn retrofit2.**
  -keep class retrofit2.** { *; }
  -keepattributes Signature
  -keepattributes Exceptions
  
  -keepclasseswithmembers class * {
      @retrofit2.http.* &lt;methods&gt;;
  }
  
  
  # Rxjava
  -dontwarn sun.misc.**
  -keep class rx.schedulers.Schedulers {
      public static &lt;methods&gt;;
  }
  -keep class rx.schedulers.ImmediateScheduler {
      public &lt;methods&gt;;
  }
  -keep class rx.schedulers.TestScheduler {
      public &lt;methods&gt;;
  }
  -keep class rx.schedulers.Schedulers {
      public static ** test();
  }
  -keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* {
      long producerIndex;
      long consumerIndex;
  }
  -keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef {
      long producerNode;
      long consumerNode;
  }
  
  # Model
  -keep class com.korvac.liquid.model.** { *; }
  
  # HttpResponse
  -keep class com.korvac.liquid.network.response.HttpResponse { *; }
  
  # SwipeRefreshLayout
  -keepclassmembers class * extends com.korvac.liquid.fragment.BaseFragment {
      *;
  }
  -keep class **$Properties
  
  # GMS
  -keep class com.google.android.gms.** { *; }
  -keep public class com.google.android.gms.**
  -dontwarn com.google.android.gms.**
  
  # MPAndroidChart
  -keep class com.github.mikephil.charting.** { *; }
  -dontwarn io.realm.**
  
  # Sweet Alert
  -keep class cn.pedant.SweetAlert.Rotate3dAnimation {
     public &lt;init&gt;(...);
  }
  
  #gif drawable
  -keep public class pl.droidsonroids.gif.GifIOException{&lt;init&gt;(int);}
  -keep class pl.droidsonroids.gif.GifInfoHandle{&lt;init&gt;(long,int,int,int);}
  
  # appcompat
  -keep public class android.support.v7.widget.** { *; }
  -keep public class android.support.v7.internal.widget.** { *; }
  -keep public class android.support.v7.internal.view.menu.** { *; }
  
  -keep public class * extends android.support.v4.view.ActionProvider {
      public &lt;init&gt;(android.content.Context);
  }
  
  # Updated as of Stetho 1.1.1
  #
  # Note: Doesn't include Javascript console lines. See https://github.com/facebook/stetho/tree/master/stetho-js-rhino#proguard
  -keep class com.facebook.stetho.** { *; }
  
  # Okio
  -keep class sun.misc.Unsafe { *; }
  -dontwarn java.nio.file.*
  -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
  -dontwarn okio.**
  </code></pre>
  
  <p>Gradle log: </p>
  
  <pre><code>Executing tasks: [:app:generateDevDebugSources, :app:generateDevDebugAndroidTestSources, :app:prepareDevDebugUnitTestDependencies, :app:mockableAndroidJar, :sdk:generateReleaseSources, :sdk:prepareReleaseUnitTestDependencies, :sdk:mockableAndroidJar]
  
  Configuration on demand is an incubating feature.
  Incremental java compilation is an incubating feature.
  :app:preBuild UP-TO-DATE
  :app:preDevDebugBuild UP-TO-DATE
  :app:checkDevDebugManifest
  :app:preDevPre_releaseBuild UP-TO-DATE
  :app:preDevReleaseBuild UP-TO-DATE
  :app:preProDebugBuild UP-TO-DATE
  :app:preProPre_releaseBuild UP-TO-DATE
  :app:preProReleaseBuild UP-TO-DATE
  :app:prepareCnPedantSweetalertLibrary13Library UP-TO-DATE
  :app:prepareComAndroidSupportAnimatedVectorDrawable2340Library UP-TO-DATE
  :app:prepareComAndroidSupportAppcompatV72340Library UP-TO-DATE
  :app:prepareComAndroidSupportDesign2340Library UP-TO-DATE
  :app:preDevDebugAndroidTestBuild UP-TO-DATE
  :app:preProDebugAndroidTestBuild UP-TO-DATE
  :app:prepareComAndroidSupportMultidex101Library UP-TO-DATE
  :app:prepareComAndroidSupportRecyclerviewV72340Library UP-TO-DATE
  :app:prepareComAndroidSupportSupportV42400Library UP-TO-DATE
  :app:prepareComAndroidSupportSupportVectorDrawable2340Library UP-TO-DATE
  :app:prepareComCrashlyticsSdkAndroidAnswers139Library UP-TO-DATE
  :app:prepareComCrashlyticsSdkAndroidBeta122Library UP-TO-DATE
  :app:prepareComCrashlyticsSdkAndroidCrashlytics262Library UP-TO-DATE
  :app:prepareComCrashlyticsSdkAndroidCrashlyticsCore2311Library UP-TO-DATE
  :app:prepareComDlazaro66QrcodereaderviewQrcodereaderview200Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesBase961Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesBasement961Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesGcm961Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesIid961Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesLocation961Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesMaps961Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesTasks961Library UP-TO-DATE
  :app:prepareComLoopeerLibraryCardstack101Library UP-TO-DATE
  :app:prepareComMakeramenRoundedimageview221Library UP-TO-DATE
  :app:prepareComPnikosisMaterialishProgress10Library UP-TO-DATE
  :app:prepareComSoundcloudAndroidAndroidCrop100Library UP-TO-DATE
  :app:prepareDeHdodenhofCircleimageview200Library UP-TO-DATE
  :app:prepareIoCardAndroidSdk534Library UP-TO-DATE
  :app:prepareIoFabricSdkAndroidFabric1313Library UP-TO-DATE
  :app:prepareIoReactivexRxandroid110Library UP-TO-DATE
  :app:prepareNetDanlewAndroidJoda2941Library UP-TO-DATE
  :app:preparePlDroidsonroidsGifAndroidGifDrawable120Library UP-TO-DATE
  :app:prepareDevDebugDependencies
  :app:compileDevDebugAidl UP-TO-DATE
  :app:compileDevDebugRenderscript UP-TO-DATE
  :app:generateDevDebugBuildConfig UP-TO-DATE
  :app:mergeDevDebugShaders UP-TO-DATE
  :app:compileDevDebugShaders UP-TO-DATE
  :app:generateDevDebugAssets UP-TO-DATE
  :app:mergeDevDebugAssets UP-TO-DATE
  :app:processDevDebugManifest UP-TO-DATE
  :app:fabricGenerateResourcesDevDebug
  :app:generateDevDebugResValues UP-TO-DATE
  :app:generateDevDebugResources
  :app:mergeDevDebugResources
  :app:processDevDebugResources
  :app:generateDevDebugSources
  :app:prepareComAndroidSupportMultidexInstrumentation101Library UP-TO-DATE
  :app:prepareDevDebugAndroidTestDependencies
  :app:compileDevDebugAndroidTestAidl UP-TO-DATE
  :app:processDevDebugAndroidTestManifest UP-TO-DATE
  :app:compileDevDebugAndroidTestRenderscript UP-TO-DATE
  :app:generateDevDebugAndroidTestBuildConfig UP-TO-DATE
  :app:generateDevDebugAndroidTestResValues UP-TO-DATE
  :app:generateDevDebugAndroidTestResources UP-TO-DATE
  :app:mergeDevDebugAndroidTestResources UP-TO-DATE
  :app:processDevDebugAndroidTestResources UP-TO-DATE
  :app:generateDevDebugAndroidTestSources UP-TO-DATE
  :app:preDevDebugUnitTestBuild UP-TO-DATE
  :app:prepareDevDebugUnitTestDependencies
  :app:mockableAndroidJar UP-TO-DATE
  :sdk:preBuild UP-TO-DATE
  :sdk:extractProguardFiles
  :sdk:preReleaseBuild
  :sdk:checkReleaseManifest
  :sdk:preDebugAndroidTestBuild UP-TO-DATE
  :sdk:preDebugBuild UP-TO-DATE
  :sdk:preDebugUnitTestBuild UP-TO-DATE
  :sdk:prePre_releaseBuild UP-TO-DATE
  :sdk:prePre_releaseUnitTestBuild UP-TO-DATE
  :sdk:preReleaseUnitTestBuild UP-TO-DATE
  :sdk:prepareCnPedantSweetalertLibrary13Library
  :sdk:prepareComAndroidSupportAnimatedVectorDrawable2340Library
  :sdk:prepareComAndroidSupportAppcompatV72340Library
  :sdk:prepareComAndroidSupportDesign2340Library
  :sdk:prepareComAndroidSupportMultidex101Library
  :sdk:prepareComAndroidSupportRecyclerviewV72340Library
  :sdk:prepareComAndroidSupportSupportV42400Library
  :sdk:prepareComAndroidSupportSupportVectorDrawable2340Library
  :sdk:prepareComDlazaro66QrcodereaderviewQrcodereaderview200Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesBase961Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesBasement961Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesGcm961Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesIid961Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesLocation961Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesMaps961Library
  :sdk:prepareComGoogleAndroidGmsPlayServicesTasks961Library
  :sdk:prepareComLoopeerLibraryCardstack101Library
  :sdk:prepareComMakeramenRoundedimageview221Library
  :sdk:prepareComPnikosisMaterialishProgress10Library
  :sdk:prepareComSoundcloudAndroidAndroidCrop100Library
  :sdk:prepareDeHdodenhofCircleimageview200Library
  :sdk:prepareIoCardAndroidSdk534Library
  :sdk:prepareIoReactivexRxandroid110Library
  :sdk:prepareNetDanlewAndroidJoda2941Library
  :sdk:preparePlDroidsonroidsGifAndroidGifDrawable120Library
  :sdk:prepareReleaseDependencies
  :sdk:compileReleaseAidl
  :sdk:compileReleaseRenderscript
  :sdk:generateReleaseBuildConfig
  :sdk:generateReleaseResValues
  :sdk:generateReleaseResources
  :sdk:mergeReleaseResources
  :sdk:processReleaseManifest
  :sdk:processReleaseResources
  :sdk:generateReleaseSources
  :sdk:prepareReleaseUnitTestDependencies
  :sdk:mockableAndroidJar UP-TO-DATE
  
  BUILD SUCCESSFUL
  
  Total time: 24.768 secs
  </code></pre>