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The NoClassDefFoundError exception is throwing

hi dears I am getting an error in the logcat which is completely unknown to me, please help me for this

java.lang.NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder
            at android.support.v7.app.AppCompatDelegateImplV7.initializePanelMenu(AppCompatDelegateImplV7.java:1012)
            at android.support.v7.app.AppCompatDelegateImplV7.preparePanel(AppCompatDelegateImplV7.java:1074)
            at android.support.v7.app.AppCompatDelegateImplV7.doInvalidatePanelMenu(AppCompatDelegateImplV7.java:1374)
            at android.support.v7.app.AppCompatDelegateImplV7.access$100(AppCompatDelegateImplV7.java:89)
            at android.support.v7.app.AppCompatDelegateImplV7$1.run(AppCompatDelegateImplV7.java:126)
            at android.os.Handler.handleCallback(Handler.java:800)
            at android.os.Handler.dispatchMessage(Handler.java:100)
            at android.os.Looper.loop(Looper.java:194)
            at android.app.ActivityThread.main(ActivityThread.java:5391)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
            at dalvik.system.NativeStart.main(Native Method)
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3 answers


Do one thing.

Copy jar file android-support-v7-appcompat.jar from appcompat_v7 library and paste in your libs folder.



Then clean and build your project.

This will work for you.

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you need to add android.support.v7.app.AppCompat library to your project
http://developer.android.com/tools/support-library/setup.html

Steps; import as android project file> import> D: \ Android \ sdk \ extras \ android \ support \ v7 \ appcompat



add it to your project.

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add this to your build.gradle modules

compile 'com.android.support:appcompat-v7:20.+'
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