NullPointerException: null when click on Generate Butterknife Injections

[ajuv001]

Today I updated android-butterknife-zelezny to 1.3.2, and there onwards I am getting NullPointerException: null when click on Generate Butterknife Injections. I tried it in a Fragment . I am using AS 1.2.2 and Butterknife 7.0.1. Please find the exception below:

null
java.lang.NullPointerException
at com.avast.android.butterknifezelezny.model.Element.getFieldName(Element.java:71)
at com.avast.android.butterknifezelezny.model.Element.(Element.java:41)
at com.avast.android.butterknifezelezny.common.Utils$1.visitElement(Utils.java:194)
at com.intellij.psi.XmlElementVisitor.visitXmlElement(XmlElementVisitor.java:22)
at com.intellij.psi.XmlElementVisitor.visitXmlTag(XmlElementVisitor.java:54)
at com.intellij.psi.impl.source.xml.XmlTagImpl.accept(XmlTagImpl.java:1017)
at com.intellij.psi.impl.source.tree.CompositePsiElement.acceptChildren(CompositePsiElement.java:80)
at com.intellij.psi.XmlRecursiveElementVisitor.visitElement(XmlRecursiveElementVisitor.java:37)
at com.avast.android.butterknifezelezny.common.Utils$1.visitElement(Utils.java:157)
at com.intellij.psi.XmlElementVisitor.visitXmlElement(XmlElementVisitor.java:22)
at com.intellij.psi.XmlElementVisitor.visitXmlTag(XmlElementVisitor.java:54)
at com.intellij.psi.impl.source.xml.XmlTagImpl.accept(XmlTagImpl.java:1017)
at com.intellij.psi.impl.source.tree.CompositePsiElement.acceptChildren(CompositePsiElement.java:80)
at com.intellij.psi.XmlRecursiveElementVisitor.visitElement(XmlRecursiveElementVisitor.java:37)
at com.avast.android.butterknifezelezny.common.Utils$1.visitElement(Utils.java:157)
at com.intellij.psi.XmlElementVisitor.visitXmlElement(XmlElementVisitor.java:22)
at com.intellij.psi.XmlElementVisitor.visitXmlDocument(XmlElementVisitor.java:42)
at com.intellij.psi.impl.source.xml.XmlDocumentImpl.accept(XmlDocumentImpl.java:89)
at com.intellij.psi.impl.source.tree.SharedImplUtil.acceptChildren(SharedImplUtil.java:196)
at com.intellij.psi.impl.source.PsiFileImpl.acceptChildren(PsiFileImpl.java:779)
at com.intellij.psi.XmlRecursiveElementVisitor.visitElement(XmlRecursiveElementVisitor.java:37)
at com.avast.android.butterknifezelezny.common.Utils$1.visitElement(Utils.java:157)
at com.intellij.psi.PsiElementVisitor.visitFile(PsiElementVisitor.java:34)
at com.intellij.psi.XmlRecursiveElementVisitor.visitFile(XmlRecursiveElementVisitor.java:55)
at com.intellij.psi.XmlElementVisitor.visitXmlFile(XmlElementVisitor.java:26)
at com.intellij.psi.impl.source.xml.XmlFileImpl.accept(XmlFileImpl.java:71)
at com.avast.android.butterknifezelezny.common.Utils.getIDsFromLayout(Utils.java:153)
at com.avast.android.butterknifezelezny.common.Utils.getIDsFromLayout(Utils.java:143)
at com.avast.android.butterknifezelezny.InjectAction.actionPerformedImpl(InjectAction.java:69)
at com.avast.android.butterknifezelezny.InjectAction.actionPerformed(InjectAction.java:56)
at com.intellij.ui.popup.PopupFactoryImpl$ActionPopupStep$1.run(PopupFactoryImpl.java:746)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:734)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:569)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:382)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

[TomasKypta]

Hi, thank you for the report. This seems to be an old hidden bug.
This happens when an android:id attribute is not a valid id reference when invoking ButterKnife generations on the layout.