Unable to instantiate activity ComponentInfo{}: java.lang.ClassNotFoundException: in loader dalvik.system.PathClassLoader[/mnt/asec/com.-1/pkg.apk

Question

I have one application which is run on ADT 12 completely without any error, i have upgrade ADT from 12 to ADT 20. But after upgrading ADT i had run my application but it throws below error,

08-06 20:12:53.896: E/AndroidRuntime(13958): FATAL EXCEPTION: main 08-06 20:12:53.896: E/AndroidRuntime(13958): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.aruhat.mobileapps.funforkids/com.aruhat.mobileapps.kidszoo.LearnWithFunGame}: java.lang.ClassNotFoundException: com.aruhat.mobileapps.kidszoo.LearnWithFunGame in loader dalvik.system.PathClassLoader[/mnt/asec/com.aruhat.mobileapps.funforkids-1/pkg.apk] 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.os.Handler.dispatchMessage(Handler.java:99) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.os.Looper.loop(Looper.java:123) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.ActivityThread.main(ActivityThread.java:4627) 08-06 20:12:53.896: E/AndroidRuntime(13958): at java.lang.reflect.Method.invokeNative(Native Method) 08-06 20:12:53.896: E/AndroidRuntime(13958): at java.lang.reflect.Method.invoke(Method.java:521) 08-06 20:12:53.896: E/AndroidRuntime(13958): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 08-06 20:12:53.896: E/AndroidRuntime(13958): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 08-06 20:12:53.896: E/AndroidRuntime(13958): at dalvik.system.NativeStart.main(Native Method) 08-06 20:12:53.896: E/AndroidRuntime(13958): Caused by: java.lang.ClassNotFoundException: com.aruhat.mobileapps.kidszoo.LearnWithFunGame in loader dalvik.system.PathClassLoader[/mnt/asec/com.aruhat.mobileapps.funforkids-1/pkg.apk] 08-06 20:12:53.896: E/AndroidRuntime(13958): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243) 08-06 20:12:53.896: E/AndroidRuntime(13958): at java.lang.ClassLoader.loadClass(ClassLoader.java:573) 08-06 20:12:53.896: E/AndroidRuntime(13958): at java.lang.ClassLoader.loadClass(ClassLoader.java:532) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 08-06 20:12:53.896: E/AndroidRuntime(13958): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577) 08-06 20:12:53.896: E/AndroidRuntime(13958): ... 11 more

But i have these class in my manifest. I had searchout so many answer but no one help to solveout this. Pls give some usefull solution of this problem.

Thanks...!!!

Answer 1

Right click on project-> click properties->remove android dependency.Again right click on project click on android tools and click fix project properties. It should work.

Answer 2

I fixed this error when I update "Android SDK Tools" and "Android SDK Platform-tools"