Eclipse Null Pointer when adding HTML under skin folder

Question

I have a simple hybrid App for Android phones. I have a skin folder created for Android tablets. I create an HTML file under the android.tablet but if this HTML file name match the same name of the HTML file under common folder then Eclipse shows a pop up error message that says: 'Building Workspace' has encountered a problem Errors occurred during the build. Java.Lang.NullPointerException

I have Eclipse Kepler SR1 64bits on OS X I get same error in Eclipse Juno on Win7.

This is the exception:

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

org.eclipse.core.runtime.CoreException: java.lang.NullPointerException at com.worklight.studio.plugin.utils.PluginUtils.toCoreException(PluginUtils.java:138) at com.worklight.studio.plugin.builders.PreviewResourceDeltaVisitor.visit(PreviewResourceDeltaVisitor.java:112) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:69) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:80) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:80) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:80) at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:49) at com.worklight.studio.plugin.builders.WorklightProjectBuilder.incrementalBuild(WorklightProjectBuilder.java:73) at com.worklight.studio.plugin.builders.WorklightProjectBuilder.build(WorklightProjectBuilder.java:61) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:726) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295) at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374) at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143) at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) Caused by: java.lang.NullPointerException at com.worklight.studio.plugin.builders.PreviewResourceDeltaVisitor.visit(PreviewResourceDeltaVisitor.java:78) ... 19 more

Answer 1

I cannot confirm this using Worklight 6.1.0:

1. Created new project and application, "test"
2. Added the Android environment
3. Add a skin to the Android environment, "android.skin"

4. Copied common\index.html to android.skin\

   No pop-up

5. Changed the HTML a bit

6. Run As > Run on Worklight Server

   No pop-up

Suggestions:

• Try with a new workspace
• Close Eclipse and follow these instructions to delete the wlBuildResources folder