title: IndexNotReadyException - Android Studio
body: <p>While changing the values of a <code>widget</code> in <code>properties</code> tab, <code>AndroidStudio</code> keeps on throwing <code>IndexNotReadyException</code>. But after few minutes while retrying, the error is not occurring.</p>
  
  <p><strong>Here is the error log:</strong></p>
  
  <pre><code>com.intellij.openapi.project.IndexNotReadyException: Please change caller according to com.intellij.openapi.project.IndexNotReadyException documentation
      at com.intellij.util.indexing.FileBasedIndexImpl.handleDumbMode(FileBasedIndexImpl.java:856)
      at com.intellij.util.indexing.FileBasedIndexImpl.ensureUpToDate(FileBasedIndexImpl.java:805)
      at com.intellij.util.indexing.FileBasedIndexImpl.processExceptions(FileBasedIndexImpl.java:930)
      at com.intellij.util.indexing.FileBasedIndexImpl.collectFileIdsContainingAllKeys(FileBasedIndexImpl.java:1190)
      at com.intellij.util.indexing.FileBasedIndexImpl.processFilesContainingAllKeys(FileBasedIndexImpl.java:1018)
      at com.intellij.psi.impl.search.PsiSearchHelperImpl$26.compute(PsiSearchHelperImpl.java:1096)
      at com.intellij.psi.impl.search.PsiSearchHelperImpl$26.compute(PsiSearchHelperImpl.java:1093)
  </code></pre>
  
  <p>I've updated the <code>AndroidStudio</code>, to latest one. But still the error occurs. Any fix or work around?</p>