Error inflating class android.support.v7.widget.CardView

Question

I unexpectedly encountered the following error while trying to run my application:

Binary XML file line #8: Error inflating class android.support.v7.widget.CardView 

Below is the log cat:

11-09 13:11:58.558: E/AndroidRuntime(12542): FATAL EXCEPTION: main     11-09 13:11:58.558: E/AndroidRuntime(12542): android.view.InflateException: Binary XML file line #8: Error inflating class android.support.v7.widget.CardView     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at com.dooba.beta.ThirdFragment.onCreateView(ThirdFragment.java:15)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:454)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.os.Handler.handleCallback(Handler.java:615)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.os.Handler.dispatchMessage(Handler.java:92)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.os.Looper.loop(Looper.java:137)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.app.ActivityThread.main(ActivityThread.java:4745)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at java.lang.reflect.Method.invokeNative(Native Method)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at java.lang.reflect.Method.invoke(Method.java:511)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at dalvik.system.NativeStart.main(Native Method)     11-09 13:11:58.558: E/AndroidRuntime(12542): Caused by: java.lang.ClassNotFoundException: android.support.v7.widget.CardView     11-09 13:11:58.558: E/AndroidRuntime(12542):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.view.LayoutInflater.createView(LayoutInflater.java:552)     11-09 13:11:58.558: E/AndroidRuntime(12542):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)     11-09 13:11:58.558: E/AndroidRuntime(12542):    ... 19 more 

Below is the java code:

public class ThirdFragment extends Fragment {      @Override     public View onCreateView(LayoutInflater inflater, ViewGroup container,             Bundle savedInstanceState) {          View rootView = inflater.inflate(R.layout.activity_city, container, false);          return rootView;     }   } 

Below is the layout code:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     xmlns:card_view="http://schemas.android.com/apk/res-auto"         android:layout_width="match_parent"     android:layout_height="match_parent"    >     <!-- A CardView that contains a TextView -->     <android.support.v7.widget.CardView         xmlns:card_view="http://schemas.android.com/apk/res-auto"         android:id="@+id/card_view"         android:layout_gravity="center"         android:layout_width="200dp"         android:layout_height="200dp"        >          <TextView             android:id="@+id/info_text"             android:layout_width="match_parent"             android:layout_height="match_parent"               />     </android.support.v7.widget.CardView> </LinearLayout> 

Thanks in advance

Answer 1

I solved this by adding updated cardview and appcompat on the app/build.gradle

dependencies {     ...     compile 'com.android.support:appcompat-v7:23.4.0'         compile 'com.android.support:cardview-v7:23.4.0'     compile 'com.android.support:recyclerview-v7:23.4.0'     } 

Then rebuild the project