Problem with MapContainer

[jeremy.te...@gmail.com]

Hello I have a Problem with the MapContainer component on Android:

If I open my screen I get following error message:

"An internal application error occurred java.lang.NullPointerException: Attempt to invoke virtual methode 'int java.io.InputStream.read(byte[]) on a null object reference"

I use following Code

        Form l_form = new Form("Google Maps");
        l_form.setLayout(new BorderLayout());
       
        final MapContainer l_map = new MapContainer();
        final Label l_label = new Label("Location: ...");
       
        try {
            l_map.addMarker(EncodedImage.create("maps-pin.png"), new Coord(41.889, -87.622), "Hi marker", "Hello", new ActionListener() {
                public void actionPerformed(ActionEvent evt) {
                    Dialog.show("Marker Clicked!", "You clicked the marker", "OK", null);
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
       
        l_map.addMapListener(new MapListener() {
            public void mapPositionUpdated(Component source, int zoom, Coord center) {
                l_label.setText("0 lon: " + l_map.getCoordAtPosition(0, 0).getLongitude()+ " w lon " + l_map.getCoordAtPosition(Display.getInstance().getDisplayWidth(), 0).getLongitude());
            }
        });
       
        l_form.addComponent(BorderLayout.SOUTH, l_label);
        l_form.addComponent(BorderLayout.CENTER, l_map);
       
        addSidebar(l_form);  
        g_current = l_form;
        l_form.show();

[Shai Almog]

Hi,
that means there is a null pointer exception somewhere where a null input stream is passed but it's hard to tell where (probably not in this code block).
Connect your device using a cable and use DDMS/logcat to look at the output from the device to see the stack trace in question.

[jeremy.te...@gmail.com]

Ah Thanks, I found the problem. I used Android Studio for debugging. The problem was, that the api - key was an old one.


02-05 17:30:23.467 22331-22405/? E/b: Authentication failed on the server.
02-05
 17:30:23.467 22331-22405/? E/Google Maps Android API: Authorization
failure.  Please see
https://developers.google.com/maps/documentation/android-api/start for
how to correctly set up the map.
02-05 17:30:23.477 22331-22405/?
E/Google Maps Android API: In the Google Developer Console
(https://console.developers.google.com)
                                                            Ensure that the "Google Maps Android API v2" is enabled.
                                                            Ensure that the following Android Key exists:
                                                                API Key: --------------------------------------------------
                                                           
     Android Application
(<cert_fingerprint>;<package_name>):