NullPointerException installing WorldClockContentProvider

[arminha]

java.lang.RuntimeException: Unable to get provider ch.corten.aha.worldclock.provider.WorldClockContentProvider: java.lang.NullPointerException
at android.app.ActivityThread.installProvider(ActivityThread.java:3569)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:3321)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3277)
at android.app.ActivityThread.access$2200(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:969)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3695)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:878)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at ch.corten.aha.worldclock.provider.CityDatabase.<init>(CityDatabase.java:57)
at ch.corten.aha.worldclock.provider.WorldClockContentProvider.onCreate(WorldClockContentProvider.java:117)
at android.content.ContentProvider.attachInfo(ContentProvider.java:798)
at android.app.ActivityThread.installProvider(ActivityThread.java:3566)
... 12 more

[arminha]

Seems ContentProvider.getContext() is only guaranteed to be non-null after onCreate() has been called.