Pourquoi mes méthodes de ServiceConnection jamais exécutés?

Question

est la classe qui appelle mon service:

public class TicketList extends ListActivity
{
private ArrayList<Tickets> alTickets = new ArrayList<Tickets>();
private boolean listCreated = false;
private static Drawable background = null;
private Resources res;
private Tickets ticket = null;
private TicketConnector localService;

/** 
 * Called when the activity is first created. 
 * 
 */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.ticketlist);

    if(!listCreated)
    {
        connectService();
        //populateList();

        res = getResources();
        background = res.getDrawable(R.drawable.background);
        listCreated = true;
    }

    TicketAdapter StatisticsAdapter = new TicketAdapter(this, alTickets);
    setListAdapter(StatisticsAdapter);
}

/**
 * Populates the ListView.
 * This needs to be done once the Activity is created and if the menu entry refresh is hit.
 */
private void populateList()
{
    try
    {           
        String jsonString = localService.queryData(new String[] {"getTicketList"}, new String[] {"Offen"});
        //String jsonString = new TicketConnector().queryData(new String[] {"getTicketList"}, new String[] {"Offen"});

        JSONObject jsonObj = new JSONObject(jsonString);
        JSONArray ticketArray = jsonObj.getJSONArray("tickets");

        Tickets[] tickets = new Tickets[ticketArray.length()];
        for (int i=0;i<ticketArray.length();i++)
        {
            JSONObject object = ticketArray.getJSONObject(i).getJSONObject("ticket");   

            ticket = new Tickets(object.getString("id"), object.getString("color"), object.getString("priority"));
            alTickets.add(ticket);
        }
    }
    catch (Exception e)
    {
        Log.e("DayTrader", "Exception getting JSON data", e);
    }
}

private void connectService() 
{
     Intent intent = new Intent(getApplicationContext(), TicketConnector.class);
     bindService(intent, connection, Context.BIND_AUTO_CREATE);
}

public void getData() 
{
     String s = localService.queryData(new String[] {"getTicketList"}, new String[] {"Offen"});
}

ServiceConnection connection = new ServiceConnection() 
{
     @Override
     public void onServiceConnected(ComponentName name, IBinder binder) 
     {
         Toast.makeText(TicketList.this, "Service connected",Toast.LENGTH_SHORT).show();

         localService = ((TicketConnector.LocalBinder)binder).getService();
         Log.i("INFO", "Service bound: TicketConnector");
     }

     @Override
     public void onServiceDisconnected(ComponentName name) 
     {
         Toast.makeText(TicketList.this, "Service disconnected",Toast.LENGTH_SHORT).show();
         localService = null;
         Log.i("INFO", "Service unbound: TicketConnector");
     }
 };
}

Et voici le service:

public class TicketConnector extends Service
{   
private SharedPreferences settings = null;

// This is the object that receives interactions from clients.  See
// RemoteService for a more complete example.
private final IBinder binder = new LocalBinder();

private String username = null;
private String password = null;
private String server = null;
private String port = null;
private String urlStr = null;

private String result = null;

@Override
public void onCreate()
{
    settings = CMDBSettings.getSettings(this);
    username = settings.getString("username", "");
    password = settings.getString("password", "");
    server = settings.getString("server", "");
    port = settings.getString("serverport", "");
}

@Override
public IBinder onBind(Intent intent)
{
    return binder;
}

@Override
public void onDestroy()
{

}

public String queryData(String[] actions, String[] category)
{
    //http://localhost:8080/MobileCMDB/TicketListener?format=json&actions=getTicketList&ticketcategory=Open
    urlStr = "http://"+server+":"+port+"/MobileCMDB/TicketListener?format=";
    new jsonParser().execute(actions);

    return result;
}

abstract class BaseParser extends AsyncTask<String, Integer, String>
{   
    protected BaseParser(String format)
    {
        urlStr += format;
    }

    private String makeUrlString(String[] actions, String[] category)
    {
        StringBuilder sb = new StringBuilder(urlStr);
        for (int i=0;i<actions.length;i++)
        {
            sb.append("&actions=");
            sb.append(actions[i]);

            sb.append("&ticketcategory=");
            sb.append(category[i]);
        }

        return sb.toString();
    }

    protected InputStream getData(String[] actions, String[] category) throws Exception
    {
        URI uri = new URI(makeUrlString(actions, category));

        HttpClient client = new DefaultHttpClient();
        HttpGet request = new HttpGet(uri);
        request.addHeader("Accept-Encoding","gzip");
        HttpResponse response = client.execute(request);
        InputStream content = response.getEntity().getContent();
        Header contentEncoding = response.getFirstHeader("Content-Encoding");

        if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip"))
        {
            content = new GZIPInputStream(content);
        }

        return content;
    }

    @Override
    protected void onPostExecute(String jsonString)
    {
        result = jsonString;
    }   
}

private class jsonParser extends BaseParser
{
    public jsonParser()
    {
        super("json");
    }

    @Override
    protected String doInBackground(String... actions) 
    {
        String[] category = new String[] {"Open"};

        StringBuilder json = null;
        try
        {
            json = new StringBuilder();
            BufferedReader reader = new BufferedReader(new InputStreamReader(getData(actions, category)));
            String line = reader.readLine();

            while (line != null)
            {
                json.append(line);
                line = reader.readLine();
            }
        } 
        catch (Exception e)
        {
            Log.e("PrimeCMDB - Network", "Exception getting JSON data", e);
        }

        return json.toString();
    }
}

/**
 * Class for clients to access.  Because we know this service always
 * runs in the same process as its clients, we don't need to deal with
 * IPC.
 */
public class LocalBinder extends Binder 
{
    public TicketConnector getService() 
    {
        return TicketConnector.this;
    }
}
}

Ce sont les deux activités dans le AndroidManifest.xml:

<activity
    android:name=".ticket.TicketList"
    android:label="@string/ticket"
/>
<service 
    android:name=".network.TicketConnector" 
    android:enabled="true"
/>

onServiceConnected est jamais exécuté. Ai-je raté quelque chose?

Voici la sortie de LogCat en mode verbose tout en activant l'activité TicketList:

09-28 23:22:11.420: INFO/ActivityManager(795): Starting activity: Intent { cmp=org.mw88.cmdb/.gui.TicketListActivity }
09-28 23:22:12.340: WARN/ActivityManager(795): Binding with unknown activity: android.os.BinderProxy@4410bf30
09-28 23:22:16.090: INFO/ActivityManager(795): Displayed activity org.mw88.cmdb/.gui.TicketListActivity: 4606 ms (total 4606 ms)

Answer 1

Merci à tous pour vos réponses.

Je trouve la question après la recherche Google pour ce message journal:

Binding with unknown activity: android.os.BinderProxy

Il semble que Android a un bug lors de l'utilisation bindService pour remplir une activité TabSpec!

La solution est assez simple: il suffit de remplacer bindService getApplicationContext (). bindService

Maintenant, il fonctionne parfaitement; -)

Answer 2

Je ne pense pas que ce soit un bug.

À mon avis, c'est parce que lorsque vous utilisez le TabActivity, les activités de l'enfant seront intégrées dans la société mère (TabActivity) comme plus comme une vue avec le comportement de l'activité, d'où son contexte ne peut servir un contexte réel.

Donc, pour la solution de contournement, vous devez obtenir et utiliser le parent (en utilisant getParent () ) ou le contexte d'application (en utilisant getApplicationContext () ) qui peut agir comme un contexte "réel".

Mais encore une fois, cela est juste mon opinion parce que je ne peux fournir aucun lien à toute la documentation liée à celle-ci. :)