ClassNotFoundException coming for AppBarLayout, CoordinatorLayout

Question

When implementing Material Design and using AppBarLayout in the XML, ClassNotFoundException is coming for AppBarLayout, CoordinatorLayout etc. in the runtime of the app. Code compiles fine.

Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.design.widget.CoordinatorLayout" on path: DexPathList[[zip file "/data/app/com.sivag1.juiceboard-1/base.apk"],nativeLibraryDirectories=[/data/app/com.sivag1.juiceboard-1/lib/arm64, /vendor/lib64, /system/lib64]]
   at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
   at android.view.LayoutInflater.createView(LayoutInflater.java:583)
   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:764)
   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
   at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
   at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
   at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
   at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:255) 
   at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)

Answer 1

Make sure to include the Android design library which is required for AppBarLayout and CoordinatorLayout.

dependencies {
compile 'com.android.support:design:23.0.1'
}