Unfortunately, I can't attach source code, but I will try to describe the problem. I created a Fragment containing an instance of a class extending MapView. The instance of this class is instantiated programmatically, the constructor of the custom MapView calls the MapView(Context c, String apiKey) constructor of the super class. When starting the Activity containing the MapView (the Activity is a MapActivity), the MapView gets displayed properly, but when I attempt to change the orientation (configuration change), the instantiation of the custom MapView fails with the following stacktrace:
07-13 16:51:41.270: ERROR/AndroidRuntime(20412): Caused by: java.lang.NullPointerException 07-13 16:51:41.270: ERROR/AndroidRuntime(20412): at com.google.android.maps.MapActivity.setupMapView(MapActivity.java:400) 07-13 16:51:41.270: ERROR/AndroidRuntime(20412): at com.google.android.maps.MapView.<init>(MapView.java:289) 07-13 16:51:41.270: ERROR/AndroidRuntime(20412): at com.google.android.maps.MapView.<init>(MapView.java:235) 07-13 16:51:41.270: ERROR/AndroidRuntime(20412): at mypackage.MyCustomMapView.<init>(MyCustomMapView.java:36) As one can see, the NullPointerException happens somewhere in the SDK. Now, I have tried to retain the instance of the Fragment using fragment.setRetainInstance(true). This obviously stops the code failing at this point, but the MapView remains black after the orientation change has been finished. Calling invalidate() on the MapView or any of its parent views does not change the situation. My theory is that the MapView does not resume properly, but I am not sure how to determine if that is the case. Any suggestions would be appreciated (either on the NullPointerException or the black MapView when setRetainInstance(true) is used). Patrick -- 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
