As per javadocs, Verify error is "thrown when the 'verifier' detects that a class file, though well formed, contains some sort of internal inconsistency or security problem". I encountered it once before when I was trying to instantiate different classes by checking the version of sdk. Even though I ensured that the right class will be instantiated depending on the sdk, somehow the vm could see my 'else' part and it sometimes threw the 'Verify Error'. Probably the fact that I am even trying to instantiate a class which does not exist for the platform led to this error. Solved the problem by seeing how the business card sample app uses reflection.
In your case, it seems like GeoPoint class is not present on all devices and so a Verify Error is being thrown (if not verified, an exception will be thrown later when this class is instantiated). What you can probably do is that use reflection to instantiate the above class, and then handle the exception gracefully. Or you can check the platform version and then instantiate the LocationHelper class (once again using reflection). Check out http://developer.android.com/resources/samples/BusinessCard/src/com/example/android/businesscard/ContactAccessor.html for suggestions on how you can use reflection for platform dependent stuff. On Mar 15, 10:07 pm, Tim <[email protected]> wrote: > I developed the gig guide application Alice, but I have run into a > problem I haven't been able to solve... > > A bunch of users with Android 1.5 are reporting Force Closes because > of Verify Errors. > > I have a LocationHelper class which has GeoPoint in one of its method > signatures. When I instantiate this class, a VerifyError is thrown. > The weird thing is seems to be very rarely thrown. I saw it only once > on my HTC Hero. I am unable to reproduce it, but I know that a lot of > my 1.5 users get this problem. > > Problem Class > > public class LocationHelper implements LocationListener { > > public static final double RADIUS_KILOMETERS = 6378; > public static final double RADIUS_MILES = 3963; > > private static LocationHelper instance; > private GeoPoint myGeoPoint; > > public static LocationHelper getInstance(Context context) { > if (instance == null) { > instance = new LocationHelper(context); > } > return instance; > } > > public static double calculationByDistance(GeoPoint StartP, GeoPoint > EndP, double radius) { > double lat1 = StartP.getLatitudeE6() / 1E6; > double lat2 = EndP.getLatitudeE6() / 1E6; > double lon1 = StartP.getLongitudeE6() / 1E6; > double lon2 = EndP.getLongitudeE6() / 1E6; > double dLat = Math.toRadians(lat2 - lat1); > double dLon = Math.toRadians(lon2 - lon1); > double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + > Math.cos(Math.toRadians(lat1)) > * Math.cos(Math.toRadians(lat2)) * > Math.sin(dLon / 2) * > Math.sin(dLon / 2); > double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); > return radius * c; > } > > ... > > } > > The class which calls the LocationHelper uses this code, and this is > where the VerifyError is thrown: > > LocationHelper helper = LocationHelper.getInstance(context); > > Extract from the manifest file: > > <uses-library > android:name="com.google.android.maps" /> > > <uses-sdk > android:minSdkVersion="3" > android:targetSdkVersion="4" /> > > Stack trace > > 03-12 04:28:09.295 I/ActivityManager( 67): Displayed activity > com.android.vending/.AssetInfoActivity: 405 ms > 03-12 04:28:25.845 I/ActivityManager( 67): Start proc com.citc.alice > for broadcast com.citc.alice/.EventAlarmReceiver: pid=9508 uid=10051 > gids={3003} > 03-12 04:28:27.135 W/dalvikvm( 9508): VFY: unable to find class > referenced in signature (Lcom/google/android/maps/GeoPoint;) > 03-12 04:28:27.135 W/dalvikvm( 9508): VFY: unable to find class > referenced in signature (Lcom/google/android/maps/GeoPoint;) > 03-12 04:28:27.165 W/dalvikvm( 9508): VFY: unable to find class > referenced in signature (Lcom/google/android/maps/GeoPoint;) > 03-12 04:28:27.165 E/dalvikvm( 9508): Could not find method > com.google.android.maps.GeoPoint.getLatitudeE6, referenced from method > com.citc.alice.util.LocationHelper.calculationByDistance > 03-12 04:28:27.165 W/dalvikvm( 9508): VFY: unable to resolve virtual > method 1259: Lcom/google/android/maps/GeoPoint;.getLatitudeE6 ()I > 03-12 04:28:27.165 W/dalvikvm( 9508): VFY: rejecting opcode 0x6e at > 0x0000 > 03-12 04:28:27.165 W/dalvikvm( 9508): VFY: rejected Lcom/citc/alice/ > util/LocationHelper;.calculationByDistance (Lcom/google/android/maps/ > GeoPoint;Lcom/google/android/maps/GeoPoint;D)D > 03-12 04:28:27.165 W/dalvikvm( 9508): Verifier rejected class Lcom/ > citc/alice/util/LocationHelper; > 03-12 04:28:27.175 D/AndroidRuntime( 9508): Shutting down VM > 03-12 04:28:27.175 W/dalvikvm( 9508): threadid=3: thread exiting with > uncaught exception (group=0x4000fe70) > 03-12 04:28:27.175 E/AndroidRuntime( 9508): Uncaught handler: thread > main exiting due to uncaught exception > 03-12 04:28:27.225 E/AndroidRuntime( 9508): java.lang.VerifyError: > com.citc.alice.util.LocationHelper > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > com.citc.alice.AliceApplication.onCreate(AliceApplication.java:20) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java: > 1048) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.app.ActivityThread.handleBindApplication(ActivityThread.java: > 3622) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.app.ActivityThread.access$2500(ActivityThread.java:112) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.app.ActivityThread$H.handleMessage(ActivityThread.java:1729) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.os.Handler.dispatchMessage(Handler.java:99) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.os.Looper.loop(Looper.java:123) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > android.app.ActivityThread.main(ActivityThread.java:3948) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > java.lang.reflect.Method.invokeNative(Native Method) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > java.lang.reflect.Method.invoke(Method.java:521) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > com.android.internal.os.ZygoteInit > $MethodAndArgsCaller.run(ZygoteInit.java:782) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) > 03-12 04:28:27.225 E/AndroidRuntime( 9508): at > dalvik.system.NativeStart.main(Native Method) > > I thought it might be just not compatible with API 3 (1.5) but then > why does it work most of the time and then sometimes complain about > the class? > > If someone can help I would really appreciate it! This one has really > got me stumped.. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
