title: jni_onload error when requesting ad from AdColony
body: <p>I am trying to integrate AdColony in my app and it was working fine with my debug version. However, when I tried building my release version I got a problem with ProGuard and had to add this to proguard-rules-pro to make it work:</p>
  
  <pre><code>-ignorewarnings
  -keep class * {
      public private *;
  }
  </code></pre>
  
  <p>This is my full proguard-rules.pro:</p>
  
  <pre><code>-optimizationpasses 5
  -dontusemixedcaseclassnames
  -dontskipnonpubliclibraryclasses
  -dontpreverify
  -verbose
  -optimizations !code/simplification/arithmetic,!field
  -keepclassmembers class com.adcolony.sdk.ADCNative** {
      *;
   }
  -keepclassmembers class * {
       @android.webkit.JavascriptInterface &lt;methods&gt;;
   }
  -dontwarn com.squareup.**
  -dontwarn okio.**
  -dontwarn retrofit2.Platform$Java8
  
  -ignorewarnings
  -keep class * {
      public private *;
  }
  </code></pre>
  
  <p>Now the ad does not load in the release or debug version, so I believe this is a problem with proguard. If I remove that code from proguard now I cannot build the debug version either. This is my adcolony code:</p>
  
  <pre><code>public class AdcolonyAd extends AppCompatActivity {
      Intent intent;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.loading);
          TextView loading = findViewById(R.id.loading_text);
          loading.setText("Loading AdColony ...");
          String app_id = getString(R.string.Adcolony_APP_ID);
          String zone_id = getString(R.string.Adcolony_ZONE_ID);
          String user = getAuth.user(this);
          AdColonyAppOptions app_options = new AdColonyAppOptions().setUserID(user);
          AdColony.configure(this, app_options, app_id, zone_id);
          AdColonyAdOptions ad_options = new AdColonyAdOptions()
                  .enableConfirmationDialog(false)
                  .enableResultsDialog(false);
          AdColonyInterstitialListener listener = new AdColonyInterstitialListener() {
              @Override
              public void onRequestFilled(AdColonyInterstitial ads) {
                  ads.show();
              }
  
              @Override
              public void onRequestNotFilled(AdColonyZone zone) {
                  if (intent == null) {
                      AdcolonyAd.this.runOnUiThread(new Runnable() {
                          public void run() {
                              Toast.makeText(AdcolonyAd.this, getString(R.string.novideo), Toast.LENGTH_LONG).show();
                          }
                      });
                  } else {
                      startActivity(intent);
                  }
                  finish();
              }
  
              @Override
              public void onOpened(AdColonyInterstitial ad) {
              }
  
              @Override
              public void onClosed(AdColonyInterstitial ad) {
                  finish();
              }
  
              @Override
              public void onExpiring(AdColonyInterstitial ad) {
                  finish();
              }
          };
          AdColony.requestInterstitial(zone_id, listener, ad_options);
      }
  
  }
  </code></pre>
  
  <p>I always get the onRequestNotFilled message so I know the code is running. This is what I found on logcat:</p>
  
  <pre><code>2018-12-01 12:43:51.714 9994-9994/? E/AdColony: JNI_OnLoad
  2018-12-01 12:43:51.728 9994-10076/? I/AdColony [INFO]: Configuring AdColony
  2018-12-01 12:43:53.692 9994-10076/? D/AdColony [TRACE]: Requesting AdColony interstitial advertisement.
  </code></pre>
  
  <p>This is the error I get when trying to create a build without fixing the proguard problem:</p>
  
  <pre><code>org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesAndResourcesWithProguardForDebug'.
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:103)
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73)
      at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
      at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
      at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
      at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
      at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
      at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
      at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
      at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
      at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
      at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
      at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
      at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
      at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:256)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
      at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:249)
      at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:238)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
      at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:663)
      at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:597)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
      at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
      at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
      at java.lang.Thread.run(Thread.java:745)
  Caused by: java.lang.RuntimeException: Job failed, see logs for details
      at com.android.build.gradle.internal.transforms.ProGuardTransform.transform(ProGuardTransform.java:207)
      at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:239)
      at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:235)
      at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102)
      at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:230)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
      at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50)
      at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
      at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
      at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113)
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95)
      ... 33 more
  Caused by: java.io.IOException: java.lang.RuntimeException: java.lang.IllegalArgumentException: Stacks have different current sizes [0] and [1]
      at com.android.build.gradle.internal.transforms.ProGuardTransform.doMinification(ProGuardTransform.java:268)
      at com.android.build.gradle.internal.transforms.ProGuardTransform.access$000(ProGuardTransform.java:65)
      at com.android.build.gradle.internal.transforms.ProGuardTransform$1.run(ProGuardTransform.java:176)
      at com.android.builder.tasks.Job.runTask(Job.java:47)
      at com.android.build.gradle.tasks.SimpleWorkQueue$EmptyThreadContext.runTask(SimpleWorkQueue.java:41)
      at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:282)
      ... 1 more
  Caused by: java.lang.RuntimeException: java.lang.IllegalArgumentException: Stacks have different current sizes [0] and [1]
      at proguard.classfile.visitor.ParallelAllClassVisitor.visitClassPool(ParallelAllClassVisitor.java:126)
      at proguard.classfile.ClassPool.accept(ClassPool.java:110)
      at proguard.optimize.Optimizer$TimedClassPoolVisitor.visitClassPool(Optimizer.java:1684)
      at proguard.classfile.ClassPool.accept(ClassPool.java:110)
      at proguard.optimize.Optimizer.execute(Optimizer.java:1392)
      at proguard.ProGuard.optimize(ProGuard.java:413)
      at proguard.ProGuard.execute(ProGuard.java:154)
      at com.android.build.gradle.internal.transforms.BaseProguardAction.runProguard(BaseProguardAction.java:64)
      at com.android.build.gradle.internal.transforms.ProGuardTransform.doMinification(ProGuardTransform.java:262)
      ... 6 more
  Caused by: java.lang.IllegalArgumentException: Stacks have different current sizes [0] and [1]
      at proguard.evaluation.Stack.generalize(Stack.java:125)
      at proguard.evaluation.TracedStack.generalize(TracedStack.java:149)
      at proguard.optimize.evaluation.PartialEvaluator.evaluateSingleInstructionBlock(PartialEvaluator.java:805)
      at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlock(PartialEvaluator.java:708)
      at proguard.optimize.evaluation.PartialEvaluator.visitExceptionInfo(PartialEvaluator.java:1189)
      at proguard.classfile.visitor.ExceptionHandlerFilter.visitExceptionInfo(ExceptionHandlerFilter.java:67)
      at proguard.classfile.attribute.CodeAttribute.exceptionsAccept(CodeAttribute.java:226)
      at proguard.optimize.evaluation.PartialEvaluator.evaluateExceptionHandlers(PartialEvaluator.java:1135)
      at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlockAndExceptionHandlers(PartialEvaluator.java:688)
      at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute0(PartialEvaluator.java:317)
      at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute(PartialEvaluator.java:230)
      at proguard.optimize.evaluation.LivenessAnalyzer.visitCodeAttribute(LivenessAnalyzer.java:265)
      at proguard.optimize.evaluation.VariableOptimizer.visitCodeAttribute(VariableOptimizer.java:105)
      at proguard.optimize.info.OptimizationCodeAttributeFilter.visitCodeAttribute(OptimizationCodeAttributeFilter.java:84)
      at proguard.classfile.attribute.visitor.DebugAttributeVisitor.visitCodeAttribute(DebugAttributeVisitor.java:302)
      at proguard.classfile.attribute.CodeAttribute.accept(CodeAttribute.java:141)
      at proguard.classfile.ProgramMethod.attributesAccept(ProgramMethod.java:101)
      at proguard.classfile.attribute.visitor.AllAttributeVisitor.visitProgramMember(AllAttributeVisitor.java:95)
      at proguard.classfile.util.SimplifiedVisitor.visitProgramMethod(SimplifiedVisitor.java:93)
      at proguard.classfile.ProgramMethod.accept(ProgramMethod.java:93)
      at proguard.classfile.ProgramClass.methodsAccept(ProgramClass.java:588)
      at proguard.classfile.visitor.AllMethodVisitor.visitProgramClass(AllMethodVisitor.java:47)
      at proguard.classfile.ProgramClass.accept(ProgramClass.java:430)
      at proguard.classfile.visitor.ParallelAllClassVisitor$MyThreadedClassVisitor$1.run(ParallelAllClassVisitor.java:197)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      ... 1 more
  </code></pre>