Galleria OnitemClick e Ontouchevent non funzionano insieme da Android versione 3.0

Question

Ho una galleria, che ha un listener e un onitemlicklistener. Quindi posso spostarmi tra le immagini e se faccio clic su una, succede qualcos'altro (dipende da cui avevo fatto clic). Ha funzionato bene prima della versione 3.0, ma da lì (3.0-4.0) dopo che gestisce l'evento OnitemClick, si verifica un'eccezione fatale:

12-07 18:46:03.008: E/AndroidRuntime(935): FATAL EXCEPTION: main
12-07 18:46:03.008: E/AndroidRuntime(935): java.lang.NullPointerException
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.GestureDetector.onTouchEvent(GestureDetector.java:587)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.widget.Gallery.onTouchEvent(Gallery.java:937)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.View.dispatchTouchEvent(View.java:5462)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1947)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1708)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1722)
12-07 18:46:03.008: E/AndroidRuntime(935):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1882)
12-07 18:46:03.008: E/AndroidRuntime(935):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1361)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.app.Activity.dispatchTouchEvent(Activity.java:2364)
12-07 18:46:03.008: E/AndroidRuntime(935):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1830)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.View.dispatchPointerEvent(View.java:5638)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:2827)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2406)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.os.Handler.dispatchMessage(Handler.java:99)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.os.Looper.loop(Looper.java:137)
12-07 18:46:03.008: E/AndroidRuntime(935):  at android.app.ActivityThread.main(ActivityThread.java:4340)
12-07 18:46:03.008: E/AndroidRuntime(935):  at java.lang.reflect.Method.invokeNative(Native Method)
12-07 18:46:03.008: E/AndroidRuntime(935):  at java.lang.reflect.Method.invoke(Method.java:511)
12-07 18:46:03.008: E/AndroidRuntime(935):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
12-07 18:46:03.008: E/AndroidRuntime(935):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
12-07 18:46:03.008: E/AndroidRuntime(935):  at dalvik.system.NativeStart.main(Native Method)