Rendering error - class could not be found: android.support.v7.internal.app.Windowdecoractionbar

Question

In my project Android Studio is giving a rendering problem in xml, giving the following error:

Rendering Problems The following classes could not be found: - android.support.v7.internal.app.Windowdecoractionbar (Fix Build Path, Create Class) Tip: Try to build the project.

And my dependency gradle is as follows:

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile('com.mikepenz:materialdrawer:4.4.8@aar') {
    transitive = true
}
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile 'com.android.support:support-v4:23.1.1'
compile 'com.android.support:recyclerview-v7:23.1.1'
compile 'com.android.support:cardview-v7:23.1.1'
compile 'com.nineoldandroids:library:2.4.0'
compile 'com.daimajia.easing:library:1.0.1@aar'
compile 'com.daimajia.androidanimations:library:1.1.3@aar'
compile 'com.melnykov:floatingactionbutton:1.3.0'
compile 'com.github.shell-software:fab:1.0.5'
compile 'com.github.clans:fab:1.4.0'
compile 'me.drakeet.materialdialog:library:1.2.2'
}

My example xml that is with problem:

<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="br.com.ciaware.people.activities.MainActivity" >

<android.support.v7.widget.Toolbar
    android:id="@+id/tb_main"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:layout_alignParentLeft="true"
    android:background="?attr/colorPrimary"
    android:elevation="0dp"
    android:minHeight="?attr/actionBarSize"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

<br.com.ciaware.people.extras.SlidingTabLayout
    android:id="@+id/stl_tabs"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />


<android.support.v4.view.ViewPager
    android:id="@+id/vp_tabs"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1" />

 </RelativeLayout>

And in Messages appears these errors

Error:(11, 68) cvc-Elt.1: Cannot find the declaration of element 'Relativelayout'.

Error:(1, 56) s4s-Elt-schema-ns: The namespace of element 'x' must be from the schema namespace, 'http://www.w3.org/2001/XMLSchema'.

Error:(1, 56) s4s-Elt-invalid: Element 'x' is not a Valid element in a schema Document.

Error:(1, 56) schema_reference.4: Failed to read schema Document 'null', because 1) could not find the Document; 2) the Document could not be read; 3) the root element of the Document is not .

And on the Gradle console it’s like this:

Executing tasks: [:app:generateDebugSources, >:app:generateDebugAndroidTestSources, :app:assembleDebug]

:Configuration on demand is an incubating Feature. :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:checkDebugManifest :app:preReleaseBuild UP-TO-DATE :app:prepareComAndroidSupportAppcompatV72311Library UP-TO-DATE :app:prepareDedroidSupportDesign2311Library UP-TO-DATE :app:prepareComAndroidSupportRecyclerviewV72311Library UP-TO-DATE :app:prepareComAndroidSupportSupportV42311Library UP-TO-DATE :app:prepareCompanyAndroidanimationsLibrary113Library UP-TO-DATE :app:prepareCompanyEasingLibrary101Library UP-TO-DATE :app:prepareGithubClansFab140Library UP-TO-DATE :app:prepareComGithubShellSoftwareFab105Library UP-TO-DATE :app:prepareComMelnykovFloatingactionbutton130Library UP-TO-DATE :app:prepareComMikepenzIconicsCore220Library UP-TO-DATE :app:prepareComMikepenzMaterialdrawer448Library UP-TO-DATE :app:prepareComMikepenzMaterialize028Library UP-TO-DATE :app:prepareMeDrakeetMaterialdialogLibrary122Library UP-TO-DATE :app:prepareDebugDependencies :app:compileDebugAidl UP-TO-DATE :app:compileDebugRenderscript UP-TO-DATE :app:generateDebugBuildConfig UP-TO-DATE :app:generateDebugAssets UP-TO-DATE :app:mergeDebugAssets UP-TO-DATE :app:generateDebugResValues UP-TO-DATE :app:generateDebugResources UP-TO-DATE :app:mergeDebugResources UP-TO-DATE :app:processDebugManifest UP-TO-DATE :app:processDebugResources UP-TO-DATE :app:generateDebugSources UP-TO-DATE :app:preDebugAndroidTestBuild UP-TO-DATE :app:prepareDebugAndroidTestDependencies :app:compileDebugAndroidTestAidl UP-TO-DATE :app:processDebugAndroidTestManifest UP-TO-DATE :app:compileDebugAndroidTestRenderscript UP-TO-DATE :app:generateDebugAndroidTestBuildConfig UP-TO-DATE :app:generateDebugAndroidTestAssets UP-TO-DATE :app:mergeDebugAndroidTestAssets UP-TO-DATE :app:generateDebugAndroidTestResValues UP-TO-DATE :app:generateDebugAndroidTestResources UP-TO-DATE :app:mergeDebugAndroidTestResources UP-TO-DATE :app:processDebugAndroidTestResources UP-TO-DATE :app:generateDebugAndroidTestSources UP-TO-DATE :app:processDebugJavaRes UP-TO-DATE :app:compileDebugJavaWithJavac UP-TO-DATE :app:compileDebugNdk UP-TO-DATE :app:compileDebugSources UP-TO-DATE :app:preDexDebug UP-TO-DATE :app:dexDebug UP-TO-DATE :app:validateDebugSigning :app:packageDebug UP-TO-DATE :app:zipalignDebug UP-TO-DATE :app:assembleDebug UP-TO-DATE

BUILD SUCCESSFUL

Total time: 1,868 secs

And Gradle is like this:

apply plugin: 'com.android.application'

android { compileSdkVersion 23 buildToolsVersion '23.0.2'

defaultConfig {
    applicationId "br.com.ciaware.people"
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 1
    versionName "0.0.1"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile('com.mikepenz:materialdrawer:4.4.8@aar') {
    transitive = true
}
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.android.support:design:23.1.1'
compile 'com.android.support:support-v4:23.1.1'
compile 'com.nineoldandroids:library:2.4.0'
compile 'com.daimajia.easing:library:1.0.1@aar'
compile 'com.daimajia.androidanimations:library:1.1.3@aar'
compile 'com.melnykov:floatingactionbutton:1.3.0'
compile 'com.github.shell-software:fab:1.0.5'
compile 'com.github.clans:fab:1.4.0'
compile 'me.drakeet.materialdialog:library:1.2.2'
}

xml style.:

<resources>

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

<style name="TextAppearanceFinish" parent="android:TextAppearance.Holo.Medium">
    <item name="android:textColor">#fff</item>
</style>


<style name="WizardPageContainer">
    <item name="android:layout_width">match_parent</item>
    <item name="android:layout_height">match_parent</item>
    <item name="android:orientation">vertical</item>
</style>

<style name="WizardPageTitle">
    <item name="android:id">@android:id/title</item>
    <item name="android:layout_width">match_parent</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:layout_marginBottom">8dp</item>
    <item name="android:layout_marginLeft">16dp</item>
    <item name="android:layout_marginRight">16dp</item>
    <item name="android:paddingLeft">?android:attr/listPreferredItemPaddingLeft</item>
    <item name="android:textSize">36sp</item>
    <item name="android:textColor">#ff0099cc</item>
    <item name="android:fontFamily">sans-serif-thin</item>
</style>

<style name="WizardFormLabel">
    <item name="android:layout_width">match_parent</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:layout_marginBottom">0dp</item>
    <item name="android:textAppearance">?android:textAppearanceSmall</item>
    <item name="android:textColor">@color/text_light</item>
    <item name="android:textStyle">bold</item>
    <item name="android:textAllCaps">true</item>
    <item name="android:paddingLeft">12dp</item>
    <item name="android:paddingRight">12dp</item>
</style>

How to fix this problem?

Answer 1

The problem is you are using the version 23.1.1 of appcompat-v7 together with Actionbar.

There are three solutions:

• Revert to the version 23.0.1
• Understudy Actionbar for Toolbar and make their theme descend from Theme.AppCompat.Light.NoActionBar or Theme.AppCompat.Dark.NoActionBar

• Use the Toolbar on "form Standalone" not adding it to the Activity with setSupportActionBar(toolbar);. In this case you can use any Appcompat Theme, however you will need to fill it manually with content/actions, you need to "inflate" a menu for it:

  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.blah);
  
      Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
  
      // Set an OnMenuItemClickListener to handle menu item clicks
      toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
          @Override
          public boolean onMenuItemClick(MenuItem item) {
              // Handle the menu item
              return true;
          }
      });
  
      // Inflate a menu to be displayed in the toolbar
      toolbar.inflateMenu(R.menu.your_toolbar_menu);
  }
  

_{I had the same problem when I upgraded to the version 23.1.1. Was here I found the reason and solution.}

Note:
If the problem is caused by any of the third-party libraries, you need to see if there is an update that is compatible with the version 23.1.1 of appcompat-v7, if it does not exist you will have to do the downgrade for a compatible version.

Answer 2

I solved the problem by changing the dependency to a more current version 'com.daimajia.slider:library:1.1.5@Aar', I have synchronized Gradle, then go to the Files menu of Android Studio and Invalidate Caches and Restart.