title: Android Studio 3.1 does not render an XML file due to a Java class missing
body: <p>It always shows me this error in the massages:</p>
  <blockquote>
  <p>java.lang.ClassNotFoundException: android.view.View$OnUnhandledKeyEventListener</p>
  </blockquote>
  <p>My project is literally <a href="https://en.wikipedia.org/wiki/%22Hello,_World!%22_program" rel="nofollow noreferrer">Hello, World!</a> and I just open Android Studio and click on the empty activity and then wait for the build to finish, but it doesn't render the app.</p>
  <p>I reinstalled Android Studio and JDK 10. But it doesn't work. The project shows fine in virtual device and I can even edit Hello, World! to any string, but in the XML view, it just shows a white screen:</p>
  <p><img src="https://i.stack.imgur.com/pUDYs.png" alt="Screenshot of project Hello, World!" />.</p>
  <p>Here is the stack trace:</p>
  <pre class="lang-none prettyprint-override"><code>java.lang.ClassNotFoundException: android.view.View$OnUnhandledKeyEventListener
      at org.jetbrains.android.uipreview.ModuleClassLoader.load(ModuleClassLoader.java:180)
      at com.android.tools.idea.rendering.RenderClassLoader.findClass(RenderClassLoader.java:61)
      at org.jetbrains.android.uipreview.ModuleClassLoader.findClass(ModuleClassLoader.java:118)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
      at org.jetbrains.android.uipreview.ModuleClassLoader.loadClass(ModuleClassLoader.java:213)
      at android.support.v7.widget.ActionBarContainer.&lt;init&gt;(ActionBarContainer.java:62)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
      at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:481)
      at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:264)
      at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:222)
      at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:209)
      at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:337)
      at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:348)
      at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:248)
      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
      at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:863)
      at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
      at android.view.LayoutInflater.rInflate(LayoutInflater.java:837)
      at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
      at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
      at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
      at com.android.layoutlib.bridge.bars.BridgeActionBar.&lt;init&gt;(BridgeActionBar.java:89)
      at com.android.layoutlib.bridge.bars.AppCompatActionBar.&lt;init&gt;(AppCompatActionBar.java:68)
      at com.android.layoutlib.bridge.impl.Layout.createActionBar(Layout.java:277)
      at com.android.layoutlib.bridge.impl.Layout.&lt;init&gt;(Layout.java:161)
      at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:288)
      at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:384)
      at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:193)
      at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:544)
      at com.android.tools.idea.rendering.RenderTask.lambda$inflate$3(RenderTask.java:678)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at java.lang.Thread.run(Thread.java:745)
  </code></pre>