Getting NoClassDefFoundError: android/R$styleable on calling setError for a textView in my activity

[rit...@voxapp.com]

I am new to Robolectric and infact today is my first day using it. 

I am trying to test the validation code inside my activity. I have a editText widget in my activity and if its value is not proper, i call setError method on the widget. At this point my robolectric test breaks and produces following stacktrace. I was wondering if i need to override ShadowTextView and create a method setError to get over this issue or is there any simpler method to solve this issue. Any help is greatly appreciated.

My stack trace is 

java.lang.NoClassDefFoundError: android/R$styleable

at android.widget.Editor$ErrorPopup.getResourceId(Editor.java:3751)

at android.widget.Editor$ErrorPopup.__constructor__(Editor.java:3728)

at android.widget.Editor$ErrorPopup.<init>(Editor.java:3723)

at android.widget.Editor.showError(Editor.java:275)

at android.widget.Editor.setError(Editor.java:320)

at android.widget.TextView.setError(TextView.java:4136)

at android.widget.TextView.setError(TextView.java:4121)

at com.voxapp.activity.LoginActivity.validateInputs(LoginActivity.java:215)

at com.voxapp.activity.LoginActivity.validateMobileNumber(LoginActivity.java:190)

at com.voxapp.activity.LoginActivity.access$0(LoginActivity.java:188)

at com.voxapp.activity.LoginActivity$1.onClick(LoginActivity.java:91)

at android.view.View.performClick(View.java:4084)

at com.voxapp.activity.TestLoginActivity.testInputValidation(TestLoginActivity.java:47)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)

at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:246)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:181)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

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.R$styleable

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

at org.robolectric.bytecode.AsmInstrumentingClassLoader.loadClass(AsmInstrumentingClassLoader.java:97)

at android.widget.Editor$ErrorPopup.$$robo$$ErrorPopup_7890_getResourceId(Editor.java:3751)

at android.widget.Editor$ErrorPopup.getResourceId(Editor.java)

at android.widget.Editor$ErrorPopup.$$robo$$ErrorPopup_7890___constructor__(Editor.java:3728)

at android.widget.Editor$ErrorPopup.<init>(Editor.java:3723)

at android.widget.Editor.$$robo$$Editor_0738_showError(Editor.java:275)

at android.widget.Editor.showError(Editor.java)

at android.widget.Editor.$$robo$$Editor_0738_setError(Editor.java:320)

at android.widget.Editor.setError(Editor.java)

at android.widget.TextView.$$robo$$TextView_347d_setError(TextView.java:4136)

at android.widget.TextView.setError(TextView.java)

at android.widget.TextView.$$robo$$TextView_347d_setError(TextView.java:4121)

at android.widget.TextView.setError(TextView.java)

at com.voxapp.activity.LoginActivity.validateInputs(LoginActivity.java:215)

at com.voxapp.activity.LoginActivity.validateMobileNumber(LoginActivity.java:190)

at com.voxapp.activity.LoginActivity.access$0(LoginActivity.java:188)

at com.voxapp.activity.LoginActivity$1.onClick(LoginActivity.java:91)

at android.view.View.$$robo$$View_17af_performClick(View.java:4084)

at android.view.View.performClick(View.java)

at com.voxapp.activity.TestLoginActivity.testInputValidation(TestLoginActivity.java:47)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

... 22 more