Eclipse throws java.lang.NullPointerException on creating android junit test configuration

android eclipse junit run-configuration
npakudin picture npakudin · Feb 3, 2012 · Viewed 40.7k times · Source

I've got Android project in Eclipse.

I created test project for my Project Try to create test configuration as written at Testing from Eclipse with ADT at developer.android.com.

My actions:

  • Run->Run configurations
  • Select Android JUnit Test->New
  • There is error message "An error has occured. See error log for more details. java.lang.NullPointerException".

  • Log:

    Problems occurred when invoking code from plug-in: "org.eclipse.jface".

java.lang.NullPointerException
at com.android.ide.eclipse.adt.internal.launch.junit.InstrumentationRunnerValidator.<init>(InstrumentationRunnerValidator.java:48)
at com.android.ide.eclipse.adt.internal.launch.junit.InstrumentationRunnerValidator.<init>(InstrumentationRunnerValidator.java:59)
at com.android.ide.eclipse.adt.internal.launch.junit.AndroidJUnitLaunchConfigurationTab.loadInstrumentations(AndroidJUnitLaunchConfigurationTab.java:954)
at com.android.ide.eclipse.adt.internal.launch.junit.AndroidJUnitLaunchConfigurationTab.initializeFrom(AndroidJUnitLaunchConfigurationTab.java:335)
at org.eclipse.debug.ui.AbstractLaunchConfigurationTabGroup.initializeFrom(AbstractLaunchConfigurationTabGroup.java:86)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupWrapper.initializeFrom(LaunchConfigurationTabGroupWrapper.java:194)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.displayInstanceTabs(LaunchConfigurationTabGroupViewer.java:751)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer$8.run(LaunchConfigurationTabGroupViewer.java:623)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.inputChanged(LaunchConfigurationTabGroupViewer.java:640)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.setInput0(LaunchConfigurationTabGroupViewer.java:602)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.setInput(LaunchConfigurationTabGroupViewer.java:578)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.handleLaunchConfigurationSelectionChanged(LaunchConfigurationsDialog.java:941)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog$3.selectionChanged(LaunchConfigurationsDialog.java:560)
at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:888)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:886)
at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1726)
at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1139)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationView.handleConfigurationAdded(LaunchConfigurationView.java:283)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationView.access$1(LaunchConfigurationView.java:272)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationView$2.run(LaunchConfigurationView.java:261)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.open(LaunchConfigurationsDialog.java:1132)
at org.eclipse.debug.ui.DebugUITools$2.run(DebugUITools.java:579)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationDialogOnGroup(DebugUITools.java:587)
at org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationDialogOnGroup(DebugUITools.java:521)
at org.eclipse.debug.ui.actions.OpenLaunchDialogAction.run(OpenLaunchDialogAction.java:81)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.ui.internal.views.log.EventDetailsDialog.open(EventDetailsDialog.java:180)
at org.eclipse.ui.internal.views.log.EventDetailsDialogAction.run(EventDetailsDialogAction.java:98)
at org.eclipse.ui.internal.views.log.LogView$15.doubleClick(LogView.java:535)
at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:845)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:843)
at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1462)
at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1246)
at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:249)
at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:246)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:307)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

I can edit this configuration, but buttons "Apply" and "Run" are disabled and configuration is not added to run button menu.

If try to edit debug configuration, the same problem.

System:

  • Eclipse version: 3.7.1 (the latest)
  • Windows 7 x64

Answer

Reactgular picture Reactgular · Oct 15, 2012

I figured out a work around that seems to work on my Eclipse installation.

  1. Start Eclipse
  2. List "Run Configurations" from the "Run" menu.
  3. Select the "Android JUnit Test" category, and then click the "New" toolbar icon.
  4. A "New_configuration" will be created, but a "NullPointerException" will be shown. After this it's not possible to edit the configuration.
  5. Exit Eclipse
  6. Open your file explorer, and navigate to [eclipse-workspace].metadata.plugins\org.eclipse.debug.core.launches
  7. This is where the run configurations are stored. Edit the file "New_configuration.launch" with a text editor.
  8. There can't be an empty entry for the PROJEC_ATTR node. For the value attribute type the name of a project that exists in Eclipse.
  9. Save the file.
  10. Rename file to desired run configuration name.
  11. Start Eclipse

You should now be able to edit the JUnit Test configuration for Android without receiving any NullPointer exceptions. I noticed after doing this, there are a few more XML nodes added to the configuration file that were missing before. So it seems that the bug is only during file creation, and not file updating.

I hope this helps other people.

Here is a sample launch file that works (assumes the project name is GemsTest.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <launchConfiguration type="com.android.ide.eclipse.adt.junit.launchConfigurationType">
    <stringAttribute key="com.android.ide.eclipse.adt.commandline" value=""/>
    <intAttribute key="com.android.ide.eclipse.adt.delay" value="0"/>
    <booleanAttribute key="com.android.ide.eclipse.adt.nobootanim" value="false"/>
    <intAttribute key="com.android.ide.eclipse.adt.speed" value="0"/>
    <stringAttribute key="com.android.ide.eclipse.adt.target" value="AUTO"/>
    <booleanAttribute key="com.android.ide.eclipse.adt.wipedata" value="false"/>
    <stringAttribute key="org.eclipse.jdt.junit.CONTAINER" value=""/>
    <stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value=""/>
    <stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="GemsTest"/>
</launchConfiguration>

Related questions

Can't start Eclipse - Java was started but returned exit code=13

I am trying to get my first taste of Android development using Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago. After first trying to start Eclipse without any parameters to specify …

Read More
R cannot be resolved - Android error

I just downloaded and installed the new Android SDK. I wanted to create a simple application to test drive it. The wizard created this code: package eu.mauriziopz.gps; import android.app.Activity; import android.os.Bundle; public class ggps …

Read More
How to build an APK file in Eclipse?

When I develop the project using Eclipse, the APK file goes on the emulator. But I want to upload my application to a real device. Is there a tool to build an APK file? What is the process? Or is …

Read More