i tried to generate signed apk but i always got this error when i enable minify in the gradle..
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
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$1.run(DefaultTaskGraphExecuter.java:248)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$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:241)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$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$1.execute(DefaultTaskPlanExecutor.java:98)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$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:196)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:221)
at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:217)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102)
at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:212)
at sun.reflect.GeneratedMethodAccessor302.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:46)
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$1.run(ExecuteActionsTaskExecuter.java:121)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$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:110)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
... 32 more
Caused by: java.io.IOException: Please correct the above warnings first.
at proguard.Initializer.execute(Initializer.java:473)
at proguard.ProGuard.initialize(ProGuard.java:233)
at proguard.ProGuard.execute(ProGuard.java:98)
at com.android.build.gradle.internal.transforms.BaseProguardAction.runProguard(BaseProguardAction.java:61)
at com.android.build.gradle.internal.transforms.ProGuardTransform.doMinification(ProGuardTransform.java:253)
at com.android.build.gradle.internal.transforms.ProGuardTransform.access$000(ProGuardTransform.java:63)
at com.android.build.gradle.internal.transforms.ProGuardTransform$1.run(ProGuardTransform.java:173)
at com.android.builder.tasks.Job.runTask(Job.java:47)
at com.android.build.gradle.tasks.SimpleWorkQueue$EmptyThreadContext.runTask(SimpleWorkQueue.java:41)
at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:282)
... 1 more
and this is my gradle file
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.xxx.xxxxx"
minSdkVersion 19
targetSdkVersion 26
versionCode 4
versionName "4.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
debug {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
release {
zipAlignEnabled true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:support-v4:26.1.0'
implementation 'com.google.firebase:firebase-core:15.0.0'
implementation 'com.google.code.gson:gson:2.8.0'
implementation 'com.google.android.gms:play-services-ads:15.0.0'
androidTestImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.android.support:design:26.1.0'
}
some reference tells that it could be problem with external library that i use, i tried to find which library but still won't solve this issue.. i upgraded my AS to 3.1 but still won't solve.. i updated my sdk but this still the same error appear.. but when i disable minify in gradle file i didn't get this error
am i missing something here?
adding java compiler error message
org.junit.experimental.results.ResultMatchers$1: can't find superclass or interface org.hamcrest.TypeSafeMatcher
org.junit.experimental.results.ResultMatchers$2: can't find superclass or interface org.hamcrest.BaseMatcher
org.junit.experimental.results.ResultMatchers$3: can't find superclass or interface org.hamcrest.BaseMatcher
org.junit.internal.AssumptionViolatedException: can't find superclass or interface org.hamcrest.SelfDescribing
org.junit.internal.matchers.StacktracePrintingMatcher: can't find superclass or interface org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find superclass or interface org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find superclass or interface org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.TypeSafeMatcher: can't find superclass or interface org.hamcrest.BaseMatcher
library class android.test.AndroidTestCase extends or implements program class junit.framework.TestCase
library class android.test.AndroidTestRunner extends or implements program class junit.runner.BaseTestRunner
library class android.test.InstrumentationTestCase extends or implements program class junit.framework.TestCase
library class android.test.InstrumentationTestSuite extends or implements program class junit.framework.TestSuite
library class android.test.suitebuilder.TestSuiteBuilder$FailedToCreateTests extends or implements program class junit.framework.TestCase
org.junit.Assert: can't find referenced class org.hamcrest.MatcherAssert
org.junit.Assert: can't find referenced class org.hamcrest.Matcher
org.junit.Assume: can't find referenced class org.hamcrest.CoreMatchers
org.junit.Assume: can't find referenced class org.hamcrest.Matcher
org.junit.Assume: can't find referenced class org.hamcrest.CoreMatchers
org.junit.Assume: can't find referenced class org.hamcrest.Matcher
org.junit.AssumptionViolatedException: can't find referenced class org.hamcrest.Matcher
org.junit.experimental.results.ResultMatchers: can't find referenced class org.hamcrest.Matcher
org.junit.experimental.results.ResultMatchers$1: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.experimental.results.ResultMatchers$1: can't find referenced class org.hamcrest.Description
org.junit.experimental.results.ResultMatchers$1: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.experimental.results.ResultMatchers$1: can't find referenced class org.hamcrest.Description
org.junit.experimental.results.ResultMatchers$1: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.BaseMatcher
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.Matcher
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.Description
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.BaseMatcher
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.Matcher
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.Description
org.junit.experimental.results.ResultMatchers$2: can't find referenced class org.hamcrest.BaseMatcher
org.junit.experimental.results.ResultMatchers$3: can't find referenced class org.hamcrest.BaseMatcher
org.junit.experimental.results.ResultMatchers$3: can't find referenced class org.hamcrest.Description
org.junit.experimental.results.ResultMatchers$3: can't find referenced class org.hamcrest.BaseMatcher
org.junit.experimental.results.ResultMatchers$3: can't find referenced class org.hamcrest.Description
org.junit.experimental.results.ResultMatchers$3: can't find referenced class org.hamcrest.BaseMatcher
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.StringDescription
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.Description
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.SelfDescribing
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.StringDescription
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.Description
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.Matcher
org.junit.internal.AssumptionViolatedException: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Factory
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Factory
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.StacktracePrintingMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Factory
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableCauseMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Matcher
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Factory
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.Description
org.junit.internal.matchers.ThrowableMessageMatcher: can't find referenced class org.hamcrest.TypeSafeMatcher
org.junit.internal.matchers.TypeSafeMatcher: can't find referenced class org.hamcrest.BaseMatcher
org.junit.internal.runners.statements.FailOnTimeout: can't find referenced class java.lang.management.ManagementFactory
org.junit.internal.runners.statements.FailOnTimeout: can't find referenced class java.lang.management.ThreadMXBean
org.junit.internal.runners.statements.FailOnTimeout: can't find referenced class java.lang.management.ManagementFactory
org.junit.internal.runners.statements.FailOnTimeout: can't find referenced class java.lang.management.ThreadMXBean
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.CoreMatchers
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher$CombinableBothMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher$CombinableEitherMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.CoreMatchers
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.Matcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher$CombinableBothMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.Matcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher$CombinableBothMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.Matcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher$CombinableEitherMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.Matcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.core.CombinableMatcher$CombinableEitherMatcher
org.junit.matchers.JUnitMatchers: can't find referenced class org.hamcrest.Matcher
org.junit.rules.DisableOnDebug: can't find referenced class java.lang.management.ManagementFactory
org.junit.rules.DisableOnDebug: can't find referenced class java.lang.management.RuntimeMXBean
org.junit.rules.DisableOnDebug: can't find referenced class java.lang.management.ManagementFactory
org.junit.rules.DisableOnDebug: can't find referenced class java.lang.management.RuntimeMXBean
org.junit.rules.ErrorCollector: can't find referenced class org.hamcrest.Matcher
org.junit.rules.ErrorCollector$1: can't find referenced class org.hamcrest.Matcher
org.junit.rules.ExpectedException: can't find referenced class org.hamcrest.CoreMatchers
org.junit.rules.ExpectedException: can't find referenced class org.hamcrest.StringDescription
org.junit.rules.ExpectedException: can't find referenced class org.hamcrest.CoreMatchers
org.junit.rules.ExpectedException: can't find referenced class org.hamcrest.StringDescription
org.junit.rules.ExpectedException: can't find referenced class org.hamcrest.Matcher
org.junit.rules.ExpectedExceptionMatcherBuilder: can't find referenced class org.hamcrest.Matcher
org.junit.rules.ExpectedExceptionMatcherBuilder: can't find referenced class org.hamcrest.CoreMatchers
org.junit.rules.ExpectedExceptionMatcherBuilder: can't find referenced class org.hamcrest.Matcher
there were 308 unresolved references to classes or interfaces.
there were 5 instances of library classes depending on program classes.
Exception while processing task java.io.IOException: Please correct the above warnings first.
