title: Resource not found android in BlankActivity layout
body: <p>I created a BlankActivity and compiler doesn't recognize class FloatingActionButton, telling me that the class could not be instantatied. I think that the problem is SDK.</p>
  
  <p>
  </p>
  
  <pre><code>&lt;android.support.design.widget.AppBarLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:theme="@style/AppTheme.AppBarOverlay"&gt;
  
      &lt;android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          android:background="?attr/colorPrimary"
          app:popupTheme="@style/AppTheme.PopupOverlay" /&gt;
  
  &lt;/android.support.design.widget.AppBarLayout&gt;
  
  &lt;include layout="@layout/content_main" /&gt;
  
  &lt;android.support.design.widget.FloatingActionButton
      android:id="@+id/fab"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom|end"
      android:layout_margin="@dimen/fab_margin"
      android:src="@android:drawable/ic_input_get" /&gt;
  </code></pre>
  
  <p></p>
  
  <p>MainActivity</p>
  
  <pre><code>public class MainActivity extends AppCompatActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
      setSupportActionBar(toolbar);
  
      FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
      fab.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View view) {
              Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                      .setAction("Action", null).show();
          }
      });
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu; this adds items to the action bar if it is present.
      getMenuInflater().inflate(R.menu.menu_main, menu);
      return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
      // Handle action bar item clicks here. The action bar will
      // automatically handle clicks on the Home/Up button, so long
      // as you specify a parent activity in AndroidManifest.xml.
      int id = item.getItemId();
  
      //noinspection SimplifiableIfStatement
      if (id == R.id.action_settings) {
          return true;
      }
  
      return super.onOptionsItemSelected(item);
  }}
  </code></pre>
  
  <p>Error:</p>
  
  <pre><code>android.content.res.Resources$NotFoundException: Unable to find resource ID #0x108002d
  at android.content.res.Resources.getResourceName(Resources.java:2235)
  at android.content.res.Resources.loadDrawableForCookie(Resources.java:2602)
  at android.content.res.Resources.loadDrawable(Resources.java:2540)
  at android.content.res.Resources.getDrawable(Resources.java:806)
  at android.content.Context.getDrawable(Context.java:458)
  at android.support.v4.content.ContextCompatApi21.getDrawable(ContextCompatApi21.java:26)
  at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:321)
  at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:180)
  at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:70)
  at android.support.v7.widget.AppCompatImageHelper.loadFromAttributes(AppCompatImageHelper.java:39)
  at android.support.v7.widget.AppCompatImageButton.&lt;init&gt;(AppCompatImageButton.java:65)
  at android.support.design.widget.VisibilityAwareImageButton.&lt;init&gt;(VisibilityAwareImageButton.java:37)
  at android.support.design.widget.FloatingActionButton.&lt;init&gt;(FloatingActionButton.java:109)
  at android.support.design.widget.FloatingActionButton.&lt;init&gt;(FloatingActionButton.java:105)
  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:422)
  at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:458)
  at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:170)
  at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:103)
  at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:168)
  at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:247)
  at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:171)
  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
  at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:835)
  at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
  at android.view.LayoutInflater.rInflate(LayoutInflater.java:811)
  at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
  at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
  at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
  at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:223)
  at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:426)
  at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:350)
  at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:510)
  at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:498)
  at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:888)
  at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:498)
  at com.android.tools.idea.rendering.RenderTask.access$600(RenderTask.java:72)
  at com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:610)
  at com.android.tools.idea.rendering.RenderTask$3.call(RenderTask.java:607)
  at com.android.tools.idea.rendering.RenderService.runRenderAction(RenderService.java:362)
  at com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:607)
  at com.android.tools.idea.rendering.RenderTask.render(RenderTask.java:629)
  at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.doRender(AndroidLayoutPreviewToolWindowManager.java:652)
  at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.access$1700(AndroidLayoutPreviewToolWindowManager.java:80)
  at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7$1.run(AndroidLayoutPreviewToolWindowManager.java:594)
  at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:152)
  at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:452)
  at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:402)
  at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
  at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:137)
  at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7.run(AndroidLayoutPreviewToolWindowManager.java:589)
  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$1.run(Alarm.java:351)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  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>
  
  <p>This is the Gradle </p>
  
  <pre><code>android{
  compileSdkVersion 23
  buildToolsVersion "23.0.2"
  
  defaultConfig {
      applicationId "com.example.android.materialdesign"
      minSdkVersion 21
      targetSdkVersion 23
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
  compile fileTree(dir: 'libs', include: ['*.jar'])
  testCompile 'junit:junit:4.12'
  compile 'com.android.support:appcompat-v7:23.2.0'
  compile 'com.android.support:design:23.2.0'
  }
  </code></pre>
  
  <p>ContentLayout:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingBottom="@dimen/activity_vertical_margin"
  android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  app:layout_behavior="@string/appbar_scrolling_view_behavior"
  tools:context="com.example.android.materialdesign.MainActivity"
  tools:showIn="@layout/activity_main"&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>