Einer von mehreren tausend Kunden hat einen Fehler in einer meiner Apps gemeldet. Der Fehler ist:

java.lang.NoClassDefFoundError - android.security.MessageDigest

Ich verwende diese Klasse / Methode nicht in meinen Apps. Der Google Mapkey muss in Ordnung sein, da Tausende dieselbe App mit derselben Version ausführen. Hier ist der Stacktrace:

java.lang.NoClassDefFoundError: android.security.MessageDigest
at com.google.android.maps.KeyHelper.getSignatureFingerprint(KeyHelper.java:60)
at com.google.android.maps.MapActivity.createMap(MapActivity.java:552)
at com.google.android.maps.MapActivity.onCreate(MapActivity.java:422)
at xx.yyy.zzzz.MyMapActivity.onCreate(MyMapActivity.java:41)
at xx.yyy.zzzz.TheMap.onCreate(TheMap.java:89)
at android.app.Activity.performCreate(Activity.java:4465)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
at android.app.ActivityThread.access$600(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)

Was ist das?

Danke im Voraus.