I have a simple android application which uses a modbus library ("jamod") on its build path. It crashes immediately as i run it. I have basically the same problem in this question: Getting "Caused by: java.lang.VerifyError:"
But i cannot really fix the problem. My application was working fine before, now no matter what i do it doesn't seem to work.
Below is logcat output. Thanks in advance.
08-09 14:36:47.753: W/dalvikvm(396): VFY: unable to find class referenced in signature (Lnet/wimpi/modbus/net/TCPMasterConnection;)
08-09 14:36:47.823: W/dalvikvm(396): VFY: unable to resolve exception class 510 (Lnet/wimpi/modbus/ModbusIOException;)
08-09 14:36:47.823: W/dalvikvm(396): VFY: unable to find exception handler at addr 0x18
08-09 14:36:47.854: W/dalvikvm(396): VFY: rejected Lcom/example/xmlparsertest/JavaModBusTcpDriver;.<init> (Ljava/lang/String;I)V
08-09 14:36:47.854: W/dalvikvm(396): VFY: rejecting opcode 0x0d at 0x0018
08-09 14:36:47.854: W/dalvikvm(396): VFY: rejected Lcom/example/xmlparsertest/JavaModBusTcpDriver;.<init> (Ljava/lang/String;I)V
08-09 14:36:47.854: W/dalvikvm(396): Verifier rejected class Lcom/example/xmlparsertest/JavaModBusTcpDriver;
08-09 14:36:47.854: D/AndroidRuntime(396): Shutting down VM
08-09 14:36:47.854: W/dalvikvm(396): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
08-09 14:36:47.873: E/AndroidRuntime(396): FATAL EXCEPTION: main
08-09 14:36:47.873: E/AndroidRuntime(396): java.lang.VerifyError: com.example.xmlparsertest.JavaModBusTcpDriver
08-09 14:36:47.873: E/AndroidRuntime(396): at com.example.xmlparsertest.MainActivity.<init>(MainActivity.java:13)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.Class.newInstanceImpl(Native Method)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.Class.newInstance(Class.java:1429)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.os.Looper.loop(Looper.java:123)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.reflect.Method.invoke(Method.java:521)
08-09 14:36:47.873: E/AndroidRuntime(396): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-09 14:36:47.873: E/AndroidRuntime(396): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-09 14:36:47.873: E/AndroidRuntime(396): at dalvik.system.NativeStart.main(Native Method)
One thing to double check you are doing is that the checkbox is ticked for the jar files in the "Order and Export" tab in the Build path window. That will include the library in the built APK.
Did you put the jamod jar file in the "libs" directory in Eclipse? If not it won't be bundled into your application even if it is on the path during compilation. This is a fairly new change.
I had a similar VFY, link and class def not found errors even though all of my libraries were in "LIB" folder and had added them in build path as well and ECLIPSE could find them easily in compile time, but when they were deployed on a real device, it gave problems.
Solution: Make sure your library files are placed in "libs" folder and not in "lib" or "library" in the ECLIPSE project.
This error (java.lang.VerifyError) comes when there are incompatible resources like interfaces/class/libs files, improper inheritances/encapsulation of static/instance level identifiers as variables/methods/arguments/class/files.
This issue is coming by simply violation of OOP design principles in the code. So the code rejected by verification process of jvm and throws verification error on runtime. If you closely look at the Error stacktrace, Instance of class-A(com.example.xmlparsertest.MainActivity) is being created by jvm stack [java.lang.Class.newInstanceImpl(Native Method)... java.lang.Class.newInstance...]. This class is referring or being reffered by other classes with violation of design principles which is causing the class to fail to get instantiated.
08-09 14:36:47.854: W/dalvikvm(396): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
08-09 14:36:47.873: E/AndroidRuntime(396): FATAL EXCEPTION: main
08-09 14:36:47.873: E/AndroidRuntime(396): java.lang.VerifyError: com.example.xmlparsertest.JavaModBusTcpDriver
08-09 14:36:47.873: E/AndroidRuntime(396): at com.example.xmlparsertest.MainActivity.<init>(MainActivity.java:13)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.Class.newInstanceImpl(Native Method)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.Class.newInstance(Class.java:1429)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.os.Looper.loop(Looper.java:123)
08-09 14:36:47.873: E/AndroidRuntime(396): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 14:36:47.873: E/AndroidRuntime(396): at java.lang.reflect.Method.invoke(Method.java:521)
08-09 14:36:47.873: E/AndroidRuntime(396): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-09 14:36:47.873: E/AndroidRuntime(396): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-09 14:36:47.873: E/AndroidRuntime(396): at dalvik.system.NativeStart.main(Native Method)
These warnings cannot be ignored because these warnings are causing the FATAL EXCEPTIONS. Dalvikvm Engineers have implemented the OOP principles as Sun Engineers Done. There are various blogs/forum where people says to ignore these warning. So do not ignore these warning and correct them especially for medical/banking/security field applications or that warning is causing to break the Application.
Do recheck your implemented OOP design principles (e.g. inheritances/encapsulation/polymorphism etc.) in the code. I was being asked to check and eliminate such errors on a big multi-module android application and i found many design violations.
First trigger to solve such issues make public/non-final everything related to class which is getting into FATAL ERROR. Once you solved, then implement your design principles one-by-one and you will get an error free appplication.
Thanks,
Vinod Bherwal (Android Architect).
Related
I was following the tutorial given at https://developers.facebook.com/docs/getting-started/facebook-sdk-for-android/3.0/
While trying to create the Android Project with Facebook login as given in section 6, I am stuck with the following error as shown in LogCat:
08-09 15:48:56.556: I/dalvikvm(378): Could not find method com.facebook.Session.getActiveSession, referenced from method com.example.myfirstandroidapplication.MainActivity.onActivityResult
08-09 15:48:56.576: W/dalvikvm(378): VFY: unable to resolve static method 27: Lcom/facebook/Session;.getActiveSession ()Lcom/facebook/Session;
08-09 15:48:56.576: D/dalvikvm(378): VFY: replacing opcode 0x71 at 0x0003
08-09 15:48:56.576: D/dalvikvm(378): VFY: dead code 0x0006-000a in Lcom/example/myfirstandroidapplication/MainActivity;.onActivityResult (IILandroid/content/Intent;)V
08-09 15:48:56.586: I/dalvikvm(378): Failed resolving Lcom/example/myfirstandroidapplication/MainActivity$1; interface 25 'Lcom/facebook/Session$StatusCallback;'
08-09 15:48:56.586: W/dalvikvm(378): Link of class 'Lcom/example/myfirstandroidapplication/MainActivity$1;' failed
08-09 15:48:56.586: E/dalvikvm(378): Could not find class 'com.example.myfirstandroidapplication.MainActivity$1', referenced from method com.example.myfirstandroidapplication.MainActivity.onCreate
08-09 15:48:56.586: W/dalvikvm(378): VFY: unable to resolve new-instance 10 (Lcom/example/myfirstandroidapplication/MainActivity$1;) in Lcom/example/myfirstandroidapplication/MainActivity;
08-09 15:48:56.586: D/dalvikvm(378): VFY: replacing opcode 0x22 at 0x0009
08-09 15:48:56.636: D/dalvikvm(378): VFY: dead code 0x000b-0010 in Lcom/example/myfirstandroidapplication/MainActivity;.onCreate (Landroid/os/Bundle;)V
08-09 15:48:56.717: D/AndroidRuntime(378): Shutting down VM
08-09 15:48:56.717: W/dalvikvm(378): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
08-09 15:48:56.736: E/AndroidRuntime(378): FATAL EXCEPTION: main
08-09 15:48:56.736: E/AndroidRuntime(378): java.lang.NoClassDefFoundError: com.example.myfirstandroidapplication.MainActivity$1
08-09 15:48:56.736: E/AndroidRuntime(378): at com.example.myfirstandroidapplication.MainActivity.onCreate(MainActivity.java:28)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.os.Looper.loop(Looper.java:123)
08-09 15:48:56.736: E/AndroidRuntime(378): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-09 15:48:56.736: E/AndroidRuntime(378): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 15:48:56.736: E/AndroidRuntime(378): at java.lang.reflect.Method.invoke(Method.java:521)
08-09 15:48:56.736: E/AndroidRuntime(378): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-09 15:48:56.736: E/AndroidRuntime(378): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-09 15:48:56.736: E/AndroidRuntime(378): at dalvik.system.NativeStart.main(Native Method)
08-09 16:22:11.456: I/dalvikvm(402): Could not find method com.facebook.Session.getActiveSession, referenced from method com.example.myfirstandroidapplication.MainActivity.onActivityResult
08-09 16:22:11.456: W/dalvikvm(402): VFY: unable to resolve static method 27: Lcom/facebook/Session;.getActiveSession ()Lcom/facebook/Session;
08-09 16:22:11.466: D/dalvikvm(402): VFY: replacing opcode 0x71 at 0x0003
08-09 16:22:11.466: D/dalvikvm(402): VFY: dead code 0x0006-000a in Lcom/example/myfirstandroidapplication/MainActivity;.onActivityResult (IILandroid/content/Intent;)V
08-09 16:22:11.476: I/dalvikvm(402): Failed resolving Lcom/example/myfirstandroidapplication/MainActivity$1; interface 25 'Lcom/facebook/Session$StatusCallback;'
08-09 16:22:11.476: W/dalvikvm(402): Link of class 'Lcom/example/myfirstandroidapplication/MainActivity$1;' failed
08-09 16:22:11.507: E/dalvikvm(402): Could not find class 'com.example.myfirstandroidapplication.MainActivity$1', referenced from method com.example.myfirstandroidapplication.MainActivity.onCreate
08-09 16:22:11.507: W/dalvikvm(402): VFY: unable to resolve new-instance 10 (Lcom/example/myfirstandroidapplication/MainActivity$1;) in Lcom/example/myfirstandroidapplication/MainActivity;
08-09 16:22:11.507: D/dalvikvm(402): VFY: replacing opcode 0x22 at 0x0009
08-09 16:22:11.507: D/dalvikvm(402): VFY: dead code 0x000b-0010 in Lcom/example/myfirstandroidapplication/MainActivity;.onCreate (Landroid/os/Bundle;)V
08-09 16:22:11.696: D/AndroidRuntime(402): Shutting down VM
08-09 16:22:11.706: W/dalvikvm(402): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
08-09 16:22:11.716: E/AndroidRuntime(402): FATAL EXCEPTION: main
08-09 16:22:11.716: E/AndroidRuntime(402): java.lang.NoClassDefFoundError: com.example.myfirstandroidapplication.MainActivity$1
08-09 16:22:11.716: E/AndroidRuntime(402): at com.example.myfirstandroidapplication.MainActivity.onCreate(MainActivity.java:28)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.os.Looper.loop(Looper.java:123)
08-09 16:22:11.716: E/AndroidRuntime(402): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-09 16:22:11.716: E/AndroidRuntime(402): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 16:22:11.716: E/AndroidRuntime(402): at java.lang.reflect.Method.invoke(Method.java:521)
08-09 16:22:11.716: E/AndroidRuntime(402): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-09 16:22:11.716: E/AndroidRuntime(402): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-09 16:22:11.716: E/AndroidRuntime(402): at dalvik.system.NativeStart.main(Native Method)
I have also tried every possible search here and tried resolving library dependencies but still can't get out of this error.
I am also attaching a screen shot of facebook sdk reference error, if it can help you in suggesting me a solution.1
If there is solution to this problem in another thread then please direct me towards the link.
I am using eclipse with libGdx framework... And Everything is set... But only when i am Run android through emulator after launching when i click on App icon it gives me a message "UNFORTUNATELY APP-NAME HAS STOPPED"... Please tell me why this is happening... Because same code works when i run as Desktop java Application through Eclipse... Please help me out... Thanks...
LOG CAT DETAILS :
08-09 19:30:45.729: W/dalvikvm(747): Unable to resolve superclass of Lcom/badlogic/drop/MainActivity; (20)
08-09 19:30:45.739: W/dalvikvm(747): Link of class 'Lcom/badlogic/drop/MainActivity;' failed
08-09 19:30:45.759: D/AndroidRuntime(747): Shutting down VM
08-09 19:30:45.759: W/dalvikvm(747): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
08-09 19:30:45.779: E/AndroidRuntime(747): FATAL EXCEPTION: main
08-09 19:30:45.779: E/AndroidRuntime(747): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.badlogic.drop/com.badlogic.drop.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.badlogic.drop.MainActivity" on path: /data/app/com.badlogic.drop-2.apk
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.os.Looper.loop(Looper.java:137)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.ActivityThread.main(ActivityThread.java:5041)
08-09 19:30:45.779: E/AndroidRuntime(747): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 19:30:45.779: E/AndroidRuntime(747): at java.lang.reflect.Method.invoke(Method.java:511)
08-09 19:30:45.779: E/AndroidRuntime(747): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-09 19:30:45.779: E/AndroidRuntime(747): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-09 19:30:45.779: E/AndroidRuntime(747): at dalvik.system.NativeStart.main(Native Method)
08-09 19:30:45.779: E/AndroidRuntime(747): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.badlogic.drop.MainActivity" on path: /data/app/com.badlogic.drop-2.apk
08-09 19:30:45.779: E/AndroidRuntime(747): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
08-09 19:30:45.779: E/AndroidRuntime(747): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
08-09 19:30:45.779: E/AndroidRuntime(747): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
08-09 19:30:45.779: E/AndroidRuntime(747): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
08-09 19:30:45.779: E/AndroidRuntime(747): ... 11 more
08-09 19:35:53.845: I/Process(747): Sending signal. PID: 747 SIG: 9
08-09 19:37:20.125: E/Trace(958): error opening trace file: No such file or directory (2)
08-09 19:37:20.225: W/dalvikvm(958): Unable to resolve superclass of Lcom/badlogic/drop/MainActivity; (20)
08-09 19:37:20.255: W/dalvikvm(958): Link of class 'Lcom/badlogic/drop/MainActivity;' failed
08-09 19:37:20.265: D/AndroidRuntime(958): Shutting down VM
08-09 19:37:20.265: W/dalvikvm(958): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
08-09 19:37:20.306: E/AndroidRuntime(958): FATAL EXCEPTION: main
08-09 19:37:20.306: E/AndroidRuntime(958): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.badlogic.drop/com.badlogic.drop.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.badlogic.drop.MainActivity" on path: /data/app/com.badlogic.drop-2.apk
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.ActivityThread.access$600(ActivityThread.java:141)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.os.Looper.loop(Looper.java:137)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.ActivityThread.main(ActivityThread.java:5041)
08-09 19:37:20.306: E/AndroidRuntime(958): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 19:37:20.306: E/AndroidRuntime(958): at java.lang.reflect.Method.invoke(Method.java:511)
08-09 19:37:20.306: E/AndroidRuntime(958): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-09 19:37:20.306: E/AndroidRuntime(958): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-09 19:37:20.306: E/AndroidRuntime(958): at dalvik.system.NativeStart.main(Native Method)
08-09 19:37:20.306: E/AndroidRuntime(958): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.badlogic.drop.MainActivity" on path: /data/app/com.badlogic.drop-2.apk
08-09 19:37:20.306: E/AndroidRuntime(958): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
08-09 19:37:20.306: E/AndroidRuntime(958): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
08-09 19:37:20.306: E/AndroidRuntime(958): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
08-09 19:37:20.306: E/AndroidRuntime(958): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
08-09 19:37:20.306: E/AndroidRuntime(958): ... 11 more
08-09 19:37:24.495: I/Process(958): Sending signal. PID: 958 SIG: 9
It seems you renamed your mainactivity class and didn't update the android manifest.
When i'm trying to run my application i receive the error as The application Sample 2 (com.example.sample2) has stopped unexpectedly. Please try again Force close error. Logcat error is given below
02-07 03:46:52.292: I/Process(275): Sending signal. PID: 275 SIG: 9
02-07 03:47:01.045: D/AndroidRuntime(335): Shutting down VM
02-07 03:47:01.045: W/dalvikvm(335): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
02-07 03:47:01.106: E/AndroidRuntime(335): FATAL EXCEPTION: main
02-07 03:47:01.106: E/AndroidRuntime(335): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.projectsample1/com.example.projectsample1.MainActivity}: java.lang.ClassNotFoundException: com.example.projectsample1.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.example.projectsample1-1.apk]
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.os.Handler.dispatchMessage(Handler.java:99)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.os.Looper.loop(Looper.java:123)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.ActivityThread.main(ActivityThread.java:4627)
02-07 03:47:01.106: E/AndroidRuntime(335): at java.lang.reflect.Method.invokeNative(Native Method)
02-07 03:47:01.106: E/AndroidRuntime(335): at java.lang.reflect.Method.invoke(Method.java:521)
02-07 03:47:01.106: E/AndroidRuntime(335): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-07 03:47:01.106: E/AndroidRuntime(335): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-07 03:47:01.106: E/AndroidRuntime(335): at dalvik.system.NativeStart.main(Native Method)
02-07 03:47:01.106: E/AndroidRuntime(335): Caused by: java.lang.ClassNotFoundException: com.example.projectsample1.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.example.projectsample1-1.apk]
02-07 03:47:01.106: E/AndroidRuntime(335): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
02-07 03:47:01.106: E/AndroidRuntime(335): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
02-07 03:47:01.106: E/AndroidRuntime(335): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
02-07 03:47:01.106: E/AndroidRuntime(335): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
02-07 03:47:01.106: E/AndroidRuntime(335): ... 11 more
02-07 03:52:01.252: I/Process(335): Sending signal. PID: 335 SIG: 9
Initially, this application was working well. But after a few days, it stopped working giving the above error. I don't seem to understand what is wrong. Please help me.
You have done one of two things:
Renamed your activity package or class name and not updated it in the manifest
or
Changed your manifest to reflect an activity that doesn't exist
Check your manifest against the fully qualified class name for that Activity. Make sure they match. Then go to Project -> Clean and clean your project.
I think, you declared Activity in AndroidManifes.xml, and register it as default to launch in your application. But, you have no Activity with this name as you declared in manifest. Just correct activity name in AndroidManifest.xml
Here is the error:
java.lang.ClassNotFoundException: com.example.projectsample1.MainActivity
The MainActivity class of the projectsample1 Application was not found.
Try to clear the dalvik-cache if you know how to do it.
Otherwise, re-install the application.
Or if you are the developer of the application, make sure to change the name of the class in the Manifest.xml file if you changed the name of the MainActivity class.
i'm getting this message when i run my application i don't know why i'm getting it could any one help me. here is the logcat.
java.lang.VerifyError: com.kosh.me.Smaller
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1429)
at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
at android.app.ActivityThread.access$2300(ActivityThread.java:125)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:876)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634)
at dalvik.system.NativeStart.main(Native Method)
This happens when the build library classes conflict with those at run-time. Try performing a Clean of your project followed by a build.
I included a jar file in my Android project as explained in How can I use external JARs in an Android project?. With both methods described by MannyNS and Vinayak B. in this post I get the error "Could not find class 'test.libraryCalc.Calc" which is the class provided by the library. The following code illustrates the problem:
Example class provided via library: Calc.java
package test.libraryCalc;
public class Calc {
public int add(int a, int b){
return a + b;
}
}
LibraryTestActivity.java
package test.library;
import test.libraryCalc.Calc;
import android.app.Activity;
import android.os.Bundle;
public class LibraryTestActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Calc calc = new Calc();
int c = calc.add(3, 4);
}
}
I exported the jar file containing Calc.java to LibraryTest\libs\calc.jar
and added a reference to it using the "Add JARs..." button in the Java Build Path of LibraryTest
The library shows up in the Referenced libraries in LibraryTest
LibraryTest has no build problems but when running it on the emulator the following is shown in LogCat:
12-27 14:01:33.965: E/dalvikvm(747): Could not find class 'test.libraryCalc.Calc', referenced from method test.library.LibraryTestActivity.onCreate
12-27 14:01:33.965: W/dalvikvm(747): VFY: unable to resolve new-instance 13 (Ltest/libraryCalc/Calc;) in Ltest/library/LibraryTestActivity;
12-27 14:01:33.995: D/dalvikvm(747): VFY: replacing opcode 0x22 at 0x0008
12-27 14:01:33.995: D/dalvikvm(747): VFY: dead code 0x000a-0013 in Ltest/library/LibraryTestActivity;.onCreate (Landroid/os/Bundle;)V
12-27 14:01:34.065: D/AndroidRuntime(747): Shutting down VM
12-27 14:01:34.065: W/dalvikvm(747): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
12-27 14:01:34.075: E/AndroidRuntime(747): FATAL EXCEPTION: main
12-27 14:01:34.075: E/AndroidRuntime(747): java.lang.NoClassDefFoundError: test.libraryCalc.Calc
12-27 14:01:34.075: E/AndroidRuntime(747): at test.library.LibraryTestActivity.onCreate(LibraryTestActivity.java:14)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.os.Handler.dispatchMessage(Handler.java:99)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.os.Looper.loop(Looper.java:123)
12-27 14:01:34.075: E/AndroidRuntime(747): at android.app.ActivityThread.main(ActivityThread.java:4627)
12-27 14:01:34.075: E/AndroidRuntime(747): at java.lang.reflect.Method.invokeNative(Native Method)
12-27 14:01:34.075: E/AndroidRuntime(747): at java.lang.reflect.Method.invoke(Method.java:521)
12-27 14:01:34.075: E/AndroidRuntime(747): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-27 14:01:34.075: E/AndroidRuntime(747): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-27 14:01:34.075: E/AndroidRuntime(747): at dalvik.system.NativeStart.main(Native Method)
12-27 14:06:34.170: I/Process(747): Sending signal. PID: 747 SIG: 9
What needs to be done to get this working? Thanks for all suggestions.
I think that the problem is that you try to add jar that contains Android code. You cannot do this. To include Android code you should create Android library. Simply create an Android project and in the project-properties Android section set that this is library project. After that you'll be able to add this library to your projects. For more about Android libraries you can read here.
Update: I've tried your code now. It works in my case. The only difference that I've made is during export of Jar I've checked Export Java source files and resources. Hope this will help you. Try it!