instantiationexception

I was playing with some code to make a "closure like" construct ( not working btw ) Everything looked fine but when I tried to access a final local variable in the code, the exception InstantiationException is thrown. If I remove the access to the local variable either by removing it altogether or by making it class attribute instead, no exception happens. The doc says: InstantiationException Thrown when an application tries to create an instance of a class using the newInstance method in class Class, but the specified class object cannot be instantiated. The instantiation can fail for a

I have a mediaplayer in a Music class that is called from another secondary Activity . It works fine. But when screen goes off (either by timeout or button), the music stops playing, and when coming back and try to close the activity the program goes to "App Not Responding", because an IllegalStateException at a query like mediaplayer.isPlaying() . How can I prevent the mediaplayer to stop when screen goes off? Does it have to be through a service?? Assuming that the answer is yes, I tried to convert the Music class into a service (see below). I also added <service android:enabled="true"

I get an InstantiationException when I try to start an IntentService. I have looked at other threads here but the answers don't solve my problem. My service class does have a default constructor. Here's my service class. (It is defined in a file FindMeService.java and that's the only class in that file.) package com.findme.findme; import android.app.IntentService; import android.content.Intent; import android.os.Bundle; import android.support.v4.content.LocalBroadcastManager; public class FindMeService extends IntentService { /*public static class Constants { }*/ public static final String

I get this error message, when I open a closed App again via App-Change button: Caused by: java.lang.InstantiationException: can't instantiate class com.*.FragmentContact$1; no empty constructor I've found several tips about Inner-Classes and to make them static etc. But this FragmentContact is a public class in a *.java-file and has a public empty constructor . I'm using Google Maps Api v2 in this project and do a trick somewhere from the internet to setup my MapView. Look here: @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View