Develop Reference

java.lang.IncompatibleClassChangeError causes app to crash, using Firebase and Google Play Services

I'm receiving following crash log when I run my app with firebase and google play services
Exception in Emulator:
11-10 17:14:39.716 2645-2645/com.winjit.musiclib.sample E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.winjit.musiclib.sample, PID: 2645
java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'com.google.firebase.iid.zzg' appears in /data/app/com.winjit.musiclib.sample-1/base.apk)
at com.google.firebase.iid.zzg.zzeC(Unknown Source)
at com.google.firebase.iid.zzg.<init>(Unknown Source)
at com.google.firebase.iid.zzg.<init>(Unknown Source)
at com.google.firebase.iid.zzd.zzb(Unknown Source)
at com.google.firebase.iid.FirebaseInstanceIdService.zziB(Unknown Source)
at com.google.firebase.iid.FirebaseInstanceIdService.zzA(Unknown Source)
at com.google.firebase.iid.zzb.onStartCommand(Unknown Source)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3010)
at android.app.ActivityThread.-wrap17(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1442)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Exception in Device:
11-10 17:30:50.724 9161-9161/com.winjit.musiclib.sample E/FirebaseApp: Firebase API initialization failure.
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at com.google.firebase.FirebaseApp.zza(Unknown Source)
at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)
at com.google.firebase.FirebaseApp.initializeApp(Unknown Source)
at com.google.firebase.FirebaseApp.zzbu(Unknown Source)
at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1801)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1776)
at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
at android.app.ActivityThread.installProvider(ActivityThread.java:5464)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5037)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4977)
at android.app.ActivityThread.-wrap1(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1562)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5769)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:681)
Caused by: java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'com.google.firebase.iid.zzg' appears in /data/app/com.winjit.musiclib.sample-1/base.apk)
at com.google.firebase.iid.zzg.zzeC(Unknown Source)
at com.google.firebase.iid.zzg.<init>(Unknown Source)
at com.google.firebase.iid.zzg.<init>(Unknown Source)
at com.google.firebase.iid.zzd.zzb(Unknown Source)
at com.google.firebase.iid.FirebaseInstanceId.getInstance(Unknown Source)
at java.lang.reflect.Method.invoke(Native Method) 
at com.google.firebase.FirebaseApp.zza(Unknown Source) 
at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) 
at com.google.firebase.FirebaseApp.initializeApp(Unknown Source) 
at com.google.firebase.FirebaseApp.zzbu(Unknown Source) 
at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source) 
at android.content.ContentProvider.attachInfo(ContentProvider.java:1801) 
at android.content.ContentProvider.attachInfo(ContentProvider.java:1776) 
at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source) 
at android.app.ActivityThread.installProvider(ActivityThread.java:5464) 
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5037) 
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4977) 
at android.app.ActivityThread.-wrap1(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1562) 
at android.os.Handler.dispatchMessage(Handler.java:111) 
at android.os.Looper.loop(Looper.java:207) 
at android.app.ActivityThread.main(ActivityThread.java:5769) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:681) 
11-10 17:30:50.866 9161-9195/com.winjit.musiclib.sample E/FA: Task exception on worker thread: java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'com.google.firebase.iid.zzg' appears in /data/app/com.winjit.musiclib.sample-1/base.apk): com.google.android.gms.measurement.internal.zzt.zzEd(Unknown Source)
Below is my gradle dependencies:
compile 'com.android.support:appcompat-v7:24.1.1'
compile 'com.google.android.gms:play-services-ads:9.0.0'
compile 'com.google.firebase:firebase-core:9.0.0'
// Add to the bottom of the file
apply plugin: 'com.google.gms.google-services'
Can someone help me to resolve this issue?

Try to compile
compile 'com.google.firebase:firebase-messaging:9.0.0'
instead of
compile 'com.google.firebase:firebase-core:9.0.0'
Also update to the latest google-play-services and google repository through the SDK Manager:
Try to use this solution. I had solved problem using above solution. I hope it will work for you.

(Internal Error) Opening Android Studio in School Computer

I have declared both system and user environment variables and setup everything I thought was needed. Getting this screen when attempting to open:
I have reinstalled Android Studio with admin privileges. Still nothing.
Does anyone know what the problem is? Let me know if information is insufficient.
edit 1: copyable error message
Internal Error. Please report to https://code.google.com/p/android/issues
com.intellij.ide.plugins.PluginManager$StartupAbortedException: Fatal error initializing 'com.intellij.debugger.DebuggerManager'
at com.intellij.ide.plugins.PluginManager.handleComponentError(PluginManager.java:256)
at com.intellij.openapi.components.impl.PlatformComponentManagerImpl.handleInitComponentError(PlatformComponentManagerImpl.java:43)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentConfigComponentAdapter.getComponentInstance(ComponentManagerImpl.java:540)
at com.intellij.openapi.components.impl.ComponentManagerImpl.createComponents(ComponentManagerImpl.java:123)
at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:107)
at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:90)
at com.intellij.openapi.project.impl.ProjectImpl.init(ProjectImpl.java:282)
at com.intellij.openapi.project.impl.ProjectManagerImpl.initProject(ProjectManagerImpl.java:231)
at com.intellij.openapi.project.impl.ProjectManagerImpl.access$300(ProjectManagerImpl.java:68)
at com.intellij.openapi.project.impl.ProjectManagerImpl$3.run(ProjectManagerImpl.java:311)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeNonCancelableSection(CoreProgressManager.java:170)
at com.intellij.openapi.project.impl.ProjectManagerImpl.getDefaultProject(ProjectManagerImpl.java:306)
at com.android.tools.idea.sdk.IdeSdks.getAndroidSdkPath(IdeSdks.java:90)
at com.android.tools.idea.startup.GradleSpecificInitializer.setupSdks(GradleSpecificInitializer.java:282)
at com.android.tools.idea.startup.GradleSpecificInitializer.run(GradleSpecificInitializer.java:114)
at com.android.tools.idea.AndroidInitialConfigurator.activateAndroidStudioInitializerExtensions(AndroidInitialConfigurator.java:198)
at com.android.tools.idea.AndroidInitialConfigurator.<init>(AndroidInitialConfigurator.java:65)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.picocontainer.defaults.InstantiatingComponentAdapter.newInstance(InstantiatingComponentAdapter.java:193)
at org.picocontainer.defaults.ConstructorInjectionComponentAdapter$1.run(ConstructorInjectionComponentAdapter.java:220)
at org.picocontainer.defaults.ThreadLocalCyclicDependencyGuard.observe(ThreadLocalCyclicDependencyGuard.java:53)
at org.picocontainer.defaults.ConstructorInjectionComponentAdapter.getComponentInstance(ConstructorInjectionComponentAdapter.java:248)
at com.intellij.util.pico.ConstructorInjectionComponentAdapter.getComponentInstance(ConstructorInjectionComponentAdapter.java:59)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentConfigComponentAdapter.getComponentInstance(ComponentManagerImpl.java:499)
at com.intellij.openapi.components.impl.ComponentManagerImpl.createComponents(ComponentManagerImpl.java:123)
at com.intellij.openapi.application.impl.ApplicationImpl.access$801(ApplicationImpl.java:92)
at com.intellij.openapi.application.impl.ApplicationImpl$12.run(ApplicationImpl.java:500)
at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:142)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:127)
at com.intellij.openapi.application.impl.ApplicationImpl.createComponents(ApplicationImpl.java:516)
at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:107)
at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:458)
at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:450)
at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:197)
at com.intellij.idea.MainImpl$1$1$1.run(MainImpl.java:52)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:366)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: com/sun/jdi/Value
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.sun.proxy.$Proxy47.<clinit>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.reflect.Proxy.newProxyInstance(Unknown Source)
at com.intellij.util.EventDispatcher.<init>(EventDispatcher.java:75)
at com.intellij.util.EventDispatcher.create(EventDispatcher.java:42)
at com.intellij.debugger.impl.DebuggerStateManager.<init>(DebuggerStateManager.java:29)
at com.intellij.debugger.impl.DebuggerManagerImpl$MyDebuggerStateManager.<init>(DebuggerManagerImpl.java:606)
at com.intellij.debugger.impl.DebuggerManagerImpl$MyDebuggerStateManager.<init>(DebuggerManagerImpl.java:606)
at com.intellij.debugger.impl.DebuggerManagerImpl.<init>(DebuggerManagerImpl.java:81)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.picocontainer.defaults.InstantiatingComponentAdapter.newInstance(InstantiatingComponentAdapter.java:193)
at org.picocontainer.defaults.ConstructorInjectionComponentAdapter$1.run(ConstructorInjectionComponentAdapter.java:220)
at org.picocontainer.defaults.ThreadLocalCyclicDependencyGuard.observe(ThreadLocalCyclicDependencyGuard.java:53)
at org.picocontainer.defaults.ConstructorInjectionComponentAdapter.getComponentInstance(ConstructorInjectionComponentAdapter.java:248)
at com.intellij.util.pico.ConstructorInjectionComponentAdapter.getComponentInstance(ConstructorInjectionComponentAdapter.java:59)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentConfigComponentAdapter.getComponentInstance(ComponentManagerImpl.java:499)
... 56 more
Caused by: java.lang.ClassNotFoundException: com.sun.jdi.Value
at com.intellij.util.lang.UrlClassLoader.findClass(UrlClassLoader.java:207)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 80 more
edit 2: my JAVA_HOME user variable
Does it have to be like this in system variables as well?

In order to fix this issue, please ensure your JAVA_HOME is pointing to C:\Program Files\Java\jdk1.8.0_102 (Java SE Development Kit) instead of C:\Program Files\Java\jre1.8.0_102 (Java SE Runtime Environment).
In fact, JRE is located inside JDK folder.
If you haven't installed JDK yet, please do it following next link: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html?ssSourceSiteId=otnes
Got from:
https://code.google.com/p/android/issues/detail?id=211766

It's a JDK issue with Android Studio.
Try to set JAVA_HOME to JDK folder
And to set %JAVA_HOME%\bin to the Path environment variable with the JAVA_HOME environment variable pointing to the jdk folder.
Remember note: You might need to restart Windows after changing the environment variable
Sources :
code.google.com/p/android/issues/detail?id=211766
Android Studio Won't Start (com.sun.jdi.Value Not Found)
How to set java_home on Windows 7?

Try turning on HAXM at the boot time of your pc and checking all the required plugins of Android studio.
Thanks..

Impossible to mock one class with mockito: Receive NoClassDefFoundError

I have around 100 unit test in my Android project. Everything work perfectly. I use JUnit + Mockito + PowerMock (when dealing with difficult static class).
While writing my latest test, I was surprise with this very strange error that I don't understand.
When I do this in the setUp() function:
playerAccessor = mock(PlayerAccessor.class);
All the tests crash with this very strange error:
java.lang.NoClassDefFoundError: android/media/MediaPlayer$OnCompletionListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:178)
at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:68)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getDeclaredMethods(Unknown Source)
at org.mockito.cglib.core.ReflectUtils.addAllMethods(ReflectUtils.java:349)
at org.mockito.cglib.proxy.Enhancer.getMethods(Enhancer.java:422)
at org.mockito.cglib.proxy.Enhancer.generateClass(Enhancer.java:457)
at org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217)
at org.mockito.cglib.proxy.Enhancer.createHelper(Enhancer.java:378)
at org.mockito.cglib.proxy.Enhancer.createClass(Enhancer.java:318)
at org.mockito.internal.creation.jmock.ClassImposterizer.createProxyClass(ClassImposterizer.java:124)
at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:60)
at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:52)
at org.mockito.internal.creation.CglibMockMaker.createMock(CglibMockMaker.java:24)
at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:43)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:32)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)
at org.mockito.Mockito.mock(Mockito.java:1258)
at org.mockito.Mockito.mock(Mockito.java:1135)
at com.stingray360.clap.ondemand.OnDemandMessageHandlerTest.setUp(OnDemandMessageHandlerTest.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.internal.runners.MethodRoadie.runBefores(MethodRoadie.java:133)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:96)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:294)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:127)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:282)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:207)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:146)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:120)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:122)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:106)
at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.ClassNotFoundException: android.media.MediaPlayer$OnCompletionListener
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 62 more
My only clue is that the PlayerAccessor have a function called register which take an object Player which implement the OnCompletionListener interface. But I'm not mocking the Player, I'm mocking the PlayerAccessor.
Do I need to specify something in my mock function so it doesn't try to mock every object used by the PlayerAccessor? Is it something missing from my test (import???).
EDIT
One answer suggest me to put the needed library (com.google.android) in the "test" scope but since it's the android library, the scope NEED to be "provided". If I change it, it's true that my unit test start to work but when I run the app, I receive big errors in the console telling me that it's a very bad thing to do to include the android jar... So what are the other solution???

If the class you're mocking imports another class you have to have that class on the classpath or the class loader will fail, regardless whether you're actually using any of the functionality afforded by it.
If you're using maven for builds you can easily add a dependency jar with test scope

Eclipse should respect pom configuration

Android Studio 0.8.1 gradle sync failed

I had a working project while using 0.6.1 and after I updated to 0.8.1 I got this error
Error: The element type "meta" must be terminated by the matching end-tag "".
Starting new projects also gives the same error as soon as gradle starts to sync.
IDE Fatal Errors Console:
Error on line 8: The element type "meta" must be terminated by the matching end-tag "</meta>".: Error on line 8: The element type "meta" must be terminated by the matching end-tag "</meta>".
org.jdom.input.JDOMParseException: Error on line 8: The element type "meta" must be terminated by the matching end-tag "</meta>".
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:533)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:946)
at com.intellij.openapi.util.JDOMUtil.loadDocument(JDOMUtil.java:364)
at com.intellij.facet.frameworks.SettingsConnectionService.readSettings(SettingsConnectionService.java:72)
at com.intellij.facet.frameworks.SettingsConnectionService.getSettingValue(SettingsConnectionService.java:112)
at com.intellij.facet.frameworks.SettingsConnectionService.getServiceUrl(SettingsConnectionService.java:104)
at com.android.tools.idea.stats.AndroidStatisticsService.areStatisticsAuthorized(AndroidStatisticsService.java:125)
at com.android.tools.idea.stats.StudioBuildStatsPersistenceComponent.addBuildRecordImmediately(StudioBuildStatsPersistenceComponent.java:103)
at com.android.tools.idea.stats.StudioBuildStatsPersistenceComponent$1.run(StudioBuildStatsPersistenceComponent.java:93)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.intellij.util.concurrency.BoundedTaskExecutor$1.run(BoundedTaskExecutor.java:37)
at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:419)
at java.util.concurrent.Executors$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)
at java.lang.Thread.run(Thread.java:745)
at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:149)
Caused by: org.xml.sax.SAXParseException; lineNumber: 8; columnNumber: 3; The element type "meta" must be terminated by the matching end-tag "</meta>".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:518)
... 18 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 8; columnNumber: 3; The element type "meta" must be terminated by the matching end-tag "</meta>".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:518)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:946)
at com.intellij.openapi.util.JDOMUtil.loadDocument(JDOMUtil.java:364)
at com.intellij.facet.frameworks.SettingsConnectionService.readSettings(SettingsConnectionService.java:72)
at com.intellij.facet.frameworks.SettingsConnectionService.getSettingValue(SettingsConnectionService.java:112)
at com.intellij.facet.frameworks.SettingsConnectionService.getServiceUrl(SettingsConnectionService.java:104)
at com.android.tools.idea.stats.AndroidStatisticsService.areStatisticsAuthorized(AndroidStatisticsService.java:125)
at com.android.tools.idea.stats.StudioBuildStatsPersistenceComponent.addBuildRecordImmediately(StudioBuildStatsPersistenceComponent.java:103)
at com.android.tools.idea.stats.StudioBuildStatsPersistenceComponent$1.run(StudioBuildStatsPersistenceComponent.java:93)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.intellij.util.concurrency.BoundedTaskExecutor$1.run(BoundedTaskExecutor.java:37)
at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:419)
at java.util.concurrent.Executors$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)
at java.lang.Thread.run(Thread.java:745)
at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:149)
Any ideas on how to fix this?

Well I used to encounter Gradle Sync Failed too, so I downloaded it manually.
For latest version of Gradle (currently 2.0) you can download it from here.
Then extract the zip file to any location and then on your Android Studio, go to File>Settings>Gradle and select Local Distribution and select your Gradle folder address.
This worked for me so I'm suggesting it to you. Cheers.

OrmLiteConfigUtil NoClassDefFoundError in android intellij project

When running OrmLiteConfigUtil for creating the table config text file, a NoClassDefFoundError for com/j256/ormlite/android/apptools/OrmLiteConfigUtil is thrown although the libs are properly added to the project dependencies.
Libs have a "Provided" scope and contain ormlite-core and ormlite-android.

Solved !
The libs actually needed the "Compiled" scope for running OrmLiteConfigUtil under Intellij.
If they are "Provided", this simply does not work !
The Stacktrace gave:
Exception in thread "main" java.lang.NoClassDefFoundError: com/j256/ormlite/android/apptools/OrmLiteConfigUtil
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:116)
Caused by: java.lang.ClassNotFoundException: com.j256.ormlite.android.apptools.OrmLiteConfigUtil
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 15 more
Process finished with exit code 1