ClassLoader referenced unknown path: /data/app/

Question

I'm getting this error. It's saying ClassLoader referenced unknown path And I don't know what to do? Can anyone solve my problem?

03-11 01:35:46.231 3040-3040/com.pptsindia.feedapp I/art: Not late-enabling -Xcheck:jni (already on)
03-11 01:35:46.418 3040-3040/com.pptsindia.feedapp W/System: ClassLoader referenced unknown path: /data/app/com.pptsindia.feedapp-1/lib/x86
03-11 01:35:46.884 3040-3040/com.pptsindia.feedapp D/AndroidRuntime: Shutting down VM
03-11 01:35:46.886 3040-3040/com.pptsindia.feedapp E/AndroidRuntime: FATAL EXCEPTION: main
                                                                     Process: com.pptsindia.feedapp, PID: 3040
                                                                     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pptsindia.feedapp/com.pptsindia.feedapp.MainActivity}: android.view.InflateException: Binary XML file line #14: Binary XML file line #14: Error inflating class at.markushi.ui.CircleButton
           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
           at android.app.ActivityThread.-wrap11(ActivityThread.java)
           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
           at android.os.Handler.dispatchMessage(Handler.java:102)
           at android.os.Looper.loop(Looper.java:148)
           at android.app.ActivityThread.main(ActivityThread.java:5417)
           at java.lang.reflect.Method.invoke(Native Method)
           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
           Caused by: android.view.InflateException: Binary XML file line #14: Binary XML file line #14: Error inflating class at.markushi.ui.CircleButton
           at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
           at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
           at com.pptsindia.feedapp.MainActivity$PlaceholderFragment.onCreateView(MainActivity.java:33)
           at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974)
           at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
           at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252)
           at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
           at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617)
           at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:339)
           at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:602)
           at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1237)
           at android.app.Activity.performStart(Activity.java:6253)
           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
           at android.app.ActivityThread.-wrap11(ActivityThread.java) 
           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
           at android.os.Handler.dispatchMessage(Handler.java:102) 
           at android.os.Looper.loop(Looper.java:148) 
           at android.app.ActivityThread.main(ActivityThread.java:5417) 
           at java.lang.reflect.Method.invoke(Native Method) 
           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
       Caused by: android.view.InflateException: Binary XML file line #14: Error inflating class at.markushi.ui.CircleButton
           at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:776)
           at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
           at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
           at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
           at android.view.LayoutInflater.rInflate(LayoutInflater.java:838)
           at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
           at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
           at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
           at com.pptsindia.feedapp.MainActivity$PlaceholderFragment.onCreateView(MainActivity.java:33) 
           at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
           at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) 
           at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) 
           at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738) 
           at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617) 
           at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:339) 
           at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:602) 
           at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1237) 
           at android.app.Activity.performStart(Activity.java:6253) 
           at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379) 
           at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
           at android.app.ActivityThread.-wrap11(ActivityThread.java) 
           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
           at android.os.Handler.dispatchMessage(Handler.java:102) 
           at android.os.Looper.loop(Looper.java:148) 
           at android.app.ActivityThread.main(ActivityThread.java:5417) 
           at java.lang.reflect.Method.invoke(Native Method) 
           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
       Caused by: java.lang.ClassNotFoundException: Didn't find class "at.markushi.ui.CircleButton" on path: DexPathList[[zip file "/data/app/com.pptsindia.feedapp-1/base.apk"],nativeLibraryDirectories=[/data/app/com.pptsindia.feedapp-1/lib/x86, /vendor/lib, /system/lib]]
            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.rInflate(LayoutInflater.java:835) 
            at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:838) 
            at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
            at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
            at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
            at com.pptsindia.feedapp.MainActivity$PlaceholderFragment.onCreateView(MainActivity.java:33) 
            at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) 
            at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) 
            at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738) 
            at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617) 
            at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:339) 
            at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:602) 
            at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1237) 
            at android.app.Activity.performStart(Activity.java:6253) 
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379) 
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
            at android.app.ActivityThread.-wrap11(ActivityThread.java) 
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
            at android.os.Handler.dispatchMessage(Handler.java:102) 
            at android.os.Looper.loop(Looper.java:148) 
            at android.app.ActivityThread.main(ActivityThread.java:5417) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
        Suppressed: java.lang.ClassNotFoundException: at.markushi.ui.CircleButton
            at java.lang.Class.classForName(Native Method)
            at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
            at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
        ... 30 more
        Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
03-11 01:35:51.964 3040-3040/? I/Process: Sending signal. PID: 3040 SIG: 9

Answer 1

For those who will find this thread in the future still looking for answer (just as I did).

W/System: ClassLoader referenced unknown path: /data/app/[...]/lib/x86

was the only error/warning I had in LogCat. After trying almost anything, cleaning app data in Android OS (Settings -> Applications -> MyApp -> Memory -> Clear data) was the only solution that worked.

I hope that it helps someone.

Answer 2

W/System: ClassLoader referenced unknown path: /data/app/com.pptsindia.feedapp-1/lib/x86

Is not an error. It is a warning from the system.

Your error is actually a little bit below:

FATAL EXCEPTION: main

Process: com.pptsindia.feedapp, PID: 3040

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pptsindia.feedapp/com.pptsindia.feedapp.MainActivity}: android.view.InflateException: Binary XML file line #14: Binary XML file line #14: Error inflating class at.markushi.ui.CircleButton

Basically you have a problem on your XML file.

So you have to keep reading the stack to make sure you get to the root of your problem. As you can see logcat show a prefix on every line it logs

• V — Verbose (lowest priority)

• D — Debug

• I — Info

• W — Warning

• E — Error

• F — Fatal

• S — Silent (highest priority, on which nothing is ever printed)

More information on Android Developer - Debugging log.

---

EDIT

Without further information it is impossible to know what the actual problem was. You would have to provide your XML file, but in that case I would suggest you open another question for that.