06-26 12:36:50.909: E/dalvikvm(567): Could not find method tj.android.projects.kalima.version1.activity.DownloadPackageListActivity_.onBackPressed, referenced from method tj.android.projects.kalima.version1.activity.DownloadPackageListActivity_.onKeyDown
06-26 12:36:50.909: W/dalvikvm(567): VFY: unable to resolve virtual method 2685: Ltj/android/projects/kalima/version1/activity/DownloadPackageListActivity_;.onBackPressed ()V
06-26 12:36:50.909: W/dalvikvm(567): VFY: rejecting opcode 0x6e at 0x0010
06-26 12:36:50.919: W/dalvikvm(567): VFY: rejected Ltj/android/projects/kalima/version1/activity/DownloadPackageListActivity_;.onKeyDown (ILandroid/view/KeyEvent;)Z
06-26 12:36:50.919: W/dalvikvm(567): Verifier rejected class Ltj/android/projects/kalima/version1/activity/DownloadPackageListActivity_;
06-26 12:36:50.919: W/dalvikvm(567): Class init failed in newInstance call (Ltj/android/projects/kalima/version1/activity/DownloadPackageListActivity_;)
06-26 12:36:50.919: D/AndroidRuntime(567): Shutting down VM
06-26 12:36:50.919: W/dalvikvm(567): threadid=3: thread exiting with uncaught exception (group=0x4001aa28)
06-26 12:36:50.919: E/AndroidRuntime(567): Uncaught handler: thread main exiting due to uncaught exception
06-26 12:36:50.959: E/AndroidRuntime(567): java.lang.VerifyError: tj.android.projects.kalima.version1.activity.DownloadPackageListActivity_
06-26 12:36:50.959: E/AndroidRuntime(567): at java.lang.Class.newInstanceImpl(Native Method)
06-26 12:36:50.959: E/AndroidRuntime(567): at java.lang.Class.newInstance(Class.java:1472)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.app.Instrumentation.newActivity(Instrumentation.java:1097)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2316)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.app.ActivityThread.access$2100(ActivityThread.java:116)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.os.Handler.dispatchMessage(Handler.java:99)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.os.Looper.loop(Looper.java:123)
06-26 12:36:50.959: E/AndroidRuntime(567): at android.app.ActivityThread.main(ActivityThread.java:4203)
06-26 12:36:50.959: E/AndroidRuntime(567): at java.lang.reflect.Method.invokeNative(Native Method)
06-26 12:36:50.959: E/AndroidRuntime(567): at java.lang.reflect.Method.invoke(Method.java:521)
06-26 12:36:50.959: E/AndroidRuntime(567): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
06-26 12:36:50.959: E/AndroidRuntime(567): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
06-26 12:36:50.959: E/AndroidRuntime(567): at dalvik.system.NativeStart.main(Native Method)

Strange error I got when run my app in the android 1.6 emulator. (On my android 4.0.3 device it works fine)

It seems that the problem is that this line of code IS executing in the 1.6 device:

if (((SdkVersionHelper.getSdkInt()< 5)&&(keyCode == KeyEvent.KEYCODE_BACK))&&(event.getRepeatCount() == 0)) {

and onBackPressed() is called. But it doesn't exists in 1.6 version of api

Of course if I add the public void onBackPressed() { } method into my activity it works fine because now it had it.

I already cleaned up the project and build paths. Kinda of weird error because my another project in the same emulator works fine using android annotations