title: ClassNotFoundException: Didn't find class "android.support.design.widget.AppBarLayout"
body: <p>I'm using AppBarLayout and NestedScrollview in my code .But I get a error. The code compile successfully but crash with the stacktrace</p>
  
  <pre><code>05-02 17:10:17.255 31335 31335 E AndroidRuntime: FATAL EXCEPTION: main
  05-02 17:10:17.255 31335 31335 E AndroidRuntime: Process: com.android.settings, PID: 31335
  05-02 17:10:17.255 31335 31335 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{XXXXXXXXXXXXXXXXXXX}: android.view.InflateException: Binary XML file line #14: Binary XML file line #14: Error inflating class android.support.design.widget.AppBarLayout
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2423)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2483)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.ActivityThread.access$900(ActivityThread.java:153)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:102)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:148)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:5438)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Native Method)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:736)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #14: Binary XML file line #14: Error inflating class android.support.design.widget.AppBarLayout
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.inflate(LayoutInflater.java:543)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.Activity.setContentView(Activity.java:2183)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.Activity.performCreate(Activity.java:6303)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2376)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    ... 9 more
  05-02 17:10:17.255 31335 31335 E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #14: Error inflating class android.support.design.widget.AppBarLayout
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:780)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:708)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.rInflate(LayoutInflater.java:839)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:802)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.inflate(LayoutInflater.java:519)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    ... 18 more
  05-02 17:10:17.255 31335 31335 E AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.design.widget.AppBarLayout" on path: DexPathList[[zip file "/system/framework/cloud-common.jar", zip file "/system/framework/zxing.jar", zip file "/system/framework/android-support-v13.jar", zip file "/system/framework/protobuf.jar", zip file "/system/priv-app/Settings/Settings.apk"],nativeLibraryDirectories=[/system/priv-app/Settings/lib/arm, /vendor/lib, /system/lib]]
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.createView(LayoutInflater.java:587)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:768)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    ... 22 more
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    Suppressed: java.lang.ClassNotFoundException: android.support.design.widget.AppBarLayout
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:        at java.lang.Class.classForName(Native Method)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:        at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:        at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:        at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:        ... 25 more
  05-02 17:10:17.255 31335 31335 E AndroidRuntime:    Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
  </code></pre>
  
  <p>I develop with intellij .thanks for any suggestion.</p>