App engine + Google cloud endpoint Aiuto!?

Ciao ragazzi ho un problema con la mia app che utilizza app engine e google cloud endpoints. Il codice non da errore ma quando faccio service.register non succede nulla al mio backend che invece dovrebbe salvare il gcm id. Non ho idea di quale sia il mio errore, quindi spero che mi potrete aiutare.
Questa è la mia activity principale:
<br /> <br /> <br /> public class MainActivity extends SherlockFragmentActivity {<br /> <br /> <br /> private ActionBar actionBar;<br /> private ViewPager viewPager;<br /> private MenuItem add_contact_button;<br /> private Boolean logged = false;<br /> private MenuItem edit_contacts;<br /> private MenuItem ok_button;<br /> private MenuItem cancel_button;<br /> <br /> private static final int REQUEST_ACCOUNT_PICKER = 2;<br /> <br /> private Boolean rememberToRegister;<br /> private static MainApplication sInstance;<br /> public static Boolean doINeedToRegister= false;<br /> <br /> private GoogleCloudMessaging gcm= null;<br /> private final String SENDER_ID = "5*********6";<br /> RegIdManager regIdManager = new RegIdManager();<br /> <br /> private RegisterGcmId registerGcmId;<br /> private String TAG = "MAIN APPLICATION GCM";<br /> public static Sand.Builder builder;<br /> public static Sand service;<br /> private final String APP_NAME = "Sand";<br /> public static SharedPreferences settings;<br /> public static GoogleAccountCredential credential;<br /> private final String SHARED_PREF_ACCOUNT = "ACCOUNT_PREF";<br /> private final String ACCOUNT_NAME = "ACCOUNT_NAME";<br /> static final String WEB_CLIENT_ID = "6**************************com";<br /> private String accountName;<br /> <br /> <br /> <br /> <br /> <br /> Context context;<br /> ProgressDialog dialog;<br /> <br /> public String reg_id;<br /> <br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected void onCreate(Bundle savedInstanceState) {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.activity_main);<br /> <br /> if (TextUtils.isEmpty(reg_id)){<br /> <br /> <br /> <br /> <br /> builder = new Sand.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), null).setApplicationName(APP_NAME);<br /> service = builder.build();<br /> <br /> credential = GoogleAccountCredential.usingAudience(this,<br /> "server:client_id:" + WEB_CLIENT_ID);<br /> settings = getSharedPreferences(SHARED_PREF_ACCOUNT,MODE_PRIVATE);<br /> <br /> setAccountName(settings.getString(ACCOUNT_NAME, null));<br /> if (credential.getSelectedAccountName() != null) {<br /> // Already signed in, begin app!<br /> Toast.makeText(this, "Logged in with : " + credential.getSelectedAccountName(), Toast.LENGTH_SHORT).show();<br /> //Toast.makeText(getBaseContext(), GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext()),Toast.LENGTH_SHORT).show();<br /> }<br /> else<br /> {<br /> chooseAccount();<br /> }<br /> RegIdManager.storeRegistrationId(this,"");<br /> reg_id = RegIdManager.getRegistrationId(this);<br /> Log.d(TAG,"REG ID: "+reg_id);<br /> <br /> if (TextUtils.isEmpty(reg_id)){<br /> registerGcmId = new RegisterGcmId();<br /> Log.d(TAG,"Progress Dialog");<br /> dialog = ProgressDialog.show(this, "", "Getting GCM id...", false, true);<br /> context = this;<br /> registerGcmId.execute((Void) null);<br /> }<br /> <br /> }<br /> }<br /> <br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public boolean onCreateOptionsMenu(Menu menu) {<br /> /*superato limite caratteri*/<br /> <br /> <br /> return super.onCreateOptionsMenu(menu);<br /> }<br /> <br /> private ViewPager.SimpleOnPageChangeListener onPageChangeListener = new ViewPager.SimpleOnPageChangeListener() {<br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onPageSelected(int position) {<br /> super.onPageSelected(position);<br /> actionBar.setSelectedNavigationItem(position);<br /> }<br /> };<br /> <br /> private void addActionBarTabs() {<br /> actionBar = getSupportActionBar();<br /> String[] tabs = {"Chats", "Contacts"};<br /> for (String tabTitle : tabs) {<br /> ActionBar.Tab tab = actionBar.newTab().setText(tabTitle)<br /> .setTabListener(tabListener);<br /> actionBar.addTab(tab);<br /> <br /> }<br /> <br /> actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);<br /> }<br /> <br /> <br /> private ActionBar.TabListener tabListener = new ActionBar.TabListener() {<br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {<br /> viewPager.setCurrentItem(tab.getPosition());<br /> switch (tab.getPosition()) {<br /> case 0:<br /> add_contact_button.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);<br /> edit_contacts.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);<br /> break;<br /> <br /> case 1:<br /> add_contact_button.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);<br /> edit_contacts.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);<br /> break;<br /> <br /> }<br /> <br /> <br /> }<br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {<br /> <br /> switch (tab.getPosition()) {<br /> case 0:<br /> break;<br /> <br /> case 1:<br /> <br /> //ok_button.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);<br /> //cancel_button.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);<br /> break;<br /> <br /> }<br /> }<br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {<br /> switch (tab.getPosition()) {<br /> case 0:<br /> edit_contacts.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);<br /> add_contact_button.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);<br /> break;<br /> case 1:<br /> add_contact_button.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);<br /> edit_contacts.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);<br /> break;<br /> <br /> <br /> }<br /> }<br /> };<br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> public boolean onOptionsItemSelected(MenuItem item) {<br /> /*superato limite caratteri*/<br /> <br /> }<br /> <br /> <br /> private void onClickAddContact(){<br /> Intent i = new Intent(this,AddContactActivity.class);<br /> startActivity(i);<br /> }<br /> <br /> private void onClickEditContacts(){<br /> Intent i = new Intent(this,EditContactsActivity.class);<br /> startActivity(i);<br /> }<br /> <br /> <br /> private void setAccountName(String accountName) {<br /> SharedPreferences.Editor editor = settings.edit();<br /> editor.putString("ACCOUNT_NAME", accountName);<br /> editor.commit();<br /> credential.setSelectedAccountName(accountName);<br /> this.accountName = accountName;<br /> }<br /> <br /> <br /> void chooseAccount() {<br /> try<br /> {<br /> startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);<br /> }<br /> catch (ActivityNotFoundException e)<br /> {<br /> <br /> Toast.makeText(this, "ActivityNotFoundException in method chooseaccount() ", Toast.LENGTH_LONG).show();<br /> <br /> return;<br /> }<br /> }<br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected void onActivityResult(int requestCode, int resultCode,<br /> Intent data) {<br /> super.onActivityResult(requestCode, resultCode, data);<br /> switch (requestCode) {<br /> case REQUEST_ACCOUNT_PICKER:<br /> if (data != null && data.getExtras() != null) {<br /> String accountName =<br /> data.getExtras().getString(<br /> AccountManager.KEY_ACCOUNT_NAME);<br /> if (accountName != null) {<br /> setAccountName(accountName);<br /> SharedPreferences.Editor editor = settings.edit();<br /> editor.putString(ACCOUNT_NAME, accountName);<br /> editor.commit();<br /> // User is authorized.<br /> }<br /> }<br /> break;<br /> }<br /> }<br /> <br /> <br /> class RegisterGcmId extends AsyncTask<Void, Void, Void> {<br /> <br /> @<a href="https://www.androidiani.com/forum/members/override.html" target="_blank">Override</a><br /> protected Void doInBackground(Void... params) {<br /> <br /> try {<br /> if (gcm == null) {<br /> gcm = GoogleCloudMessaging.getInstance(context);<br /> Log.i("GCM","gcm.toString(): "+gcm.toString());<br /> }<br /> reg_id = gcm.register(SENDER_ID);<br /> Log.i("GCM","Reg Id: "+reg_id);<br /> service.register(reg_id); // QUI C'è QUALCOSA CHE NON VA<br /> regIdManager.storeRegistrationId(context, reg_id);<br /> dialog.dismiss();<br /> <br /> <br /> } catch (IOException ex) {<br /> Log.e("GCM","Error :" + ex.getMessage());<br /> dialog.dismiss();<br /> }<br /> catch (NullPointerException ne){<br /> Log.e("GCM","Error null pointer :" );<br /> ne.printStackTrace();<br /> dialog.dismiss();<br /> }<br /> <br /> <br /> return null;<br /> }<br /> }<br /> <br /> <br /> }<br />

E questo è il mio metodo register caricato su app engine:
@ApiMethod(name = "register", path = "register", httpMethod = HttpMethod.POST)<br /> public WrappedBoolean register @<a href="https://www.androidiani.com/forum/members/name.html" target="_blank">Name</a>d("user")User user, @<a href="https://www.androidiani.com/forum/members/name.html" target="_blank">Name</a>d("gcm_id")String gcm_id) throws UnauthorizedException, NullPointerException<br /> {<br /> if (user==null)<br /> throw new UnauthorizedException("You are not logged in.");<br /> if (gcm_id==null)<br /> throw new NullPointerException("GCM id is null.");<br /> <br /> SandUser sandUser = ofy().load().key(Key.create(SandUser.class,user.getUserId())).now();<br /> <br /> if (sandUser==null || sandUser.getGcm_id()!= gcm_id){<br /> sandUser = new SandUser(user,gcm_id);<br /> ofy().save().entity(sandUser).now();<br /> }<br /> <br /> return new WrappedBoolean(true);<br /> }