title: Already disposedjava.lang.AssertionError when switching to design view in Android Studio
body: <p>I get the following error when switching to Design View in Android Studio, nothing changed in the activity and it used to work before:</p>
  
  <pre><code>java.lang.AssertionError: Already disposed
      at com.intellij.openapi.components.impl.ComponentManagerImpl.getPicoContainer(ComponentManagerImpl.java:263)
      at com.intellij.openapi.components.impl.ComponentManagerImpl.getPicoContainer(ComponentManagerImpl.java:55)
      at com.intellij.openapi.components.ServiceManager.getService(ServiceManager.java:40)
      at com.intellij.openapi.roots.impl.DirectoryIndex.getInstance(DirectoryIndex.java:31)
      at org.jetbrains.android.dom.AndroidXmlExtension.isAvailable(AndroidXmlExtension.java:52)
      at com.intellij.xml.XmlExtension.getExtension(XmlExtension.java:48)
      at com.intellij.xml.XmlExtension.getExtensionByElement(XmlExtension.java:59)
      at com.intellij.psi.impl.source.xml.XmlTagImpl.computeNamespaceMap(XmlTagImpl.java:893)
      at com.intellij.psi.impl.source.xml.XmlTagImpl.initNamespaceMaps(XmlTagImpl.java:857)
      at com.intellij.psi.impl.source.xml.XmlTagImpl.getAttributeValue(XmlTagImpl.java:631)
      at com.android.tools.idea.rendering.PsiResourceItem$1.getDefaultIndex(PsiResourceItem.java:160)
      at com.android.ide.common.rendering.api.ArrayResourceValue.getValue(ArrayResourceValue.java:95)
      at com.android.ide.common.resources.ResourceResolver.resolveResValue(ResourceResolver.java:272)
      at com.android.ide.common.resources.ResourceResolver.resolveResValue(ResourceResolver.java:263)
      at com.android.ide.common.resources.ResourceResolver.resolveValue(ResourceResolver.java:258)
      at com.android.layoutlib.bridge.android.BridgeContext.obtainStyledAttributes(BridgeContext.java:705)
      at android.widget.AbsSpinner.&lt;init&gt;(AbsSpinner.java:71)
      at android.widget.Spinner.&lt;init&gt;(Spinner.java:165)
      at android.widget.Spinner.&lt;init&gt;(Spinner.java:144)
      at android.widget.Spinner.&lt;init&gt;(Spinner.java:128)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
      at android.view.LayoutInflater.createView(LayoutInflater.java:594)
      at android.view.BridgeInflater.onCreateView(BridgeInflater.java:86)
      at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
      at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:131)
      at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:755)
      at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
      at android.view.LayoutInflater.rInflate(LayoutInflater.java:727)
      at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:758)
      at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
      at android.view.LayoutInflater.rInflate(LayoutInflater.java:727)
      at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:758)
      at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
      at android.view.LayoutInflater.rInflate(LayoutInflater.java:727)
      at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
      at android.view.LayoutInflater.inflate(LayoutInflater.java:373)
      at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:399)
      at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:336)
      at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:332)
      at com.android.tools.idea.rendering.RenderService$3.compute(RenderService.java:542)
      at com.android.tools.idea.rendering.RenderService$3.compute(RenderService.java:535)
      at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:934)
      at com.android.tools.idea.rendering.RenderService.createRenderSession(RenderService.java:535)
      at com.android.tools.idea.rendering.RenderService.render(RenderService.java:577)
      at com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel$7$2.compute(AndroidDesignerEditorPanel.java:501)
      at com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel$7$2.compute(AndroidDesignerEditorPanel.java:494)
      at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:945)
      at com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel$7.run(AndroidDesignerEditorPanel.java:494)
      at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
      at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
      at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
      at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
      at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
      at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
      at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
      at com.intellij.util.Alarm$Request$1.run(Alarm.java:297)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
      at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
      at java.util.concurrent.FutureTask.run(FutureTask.java:138)
      at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
      at java.lang.Thread.run(Thread.java:695)
  </code></pre>
  
  <p>Any clues on this ?</p>