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POProblem with asyncTask that work's on emulator and not on device
 

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  1. POProblem with asyncTask that work's on emulator and not on device
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    <p>I've a problem with asyncTask. In my app the user must log on. He do it one times, and I saved the login/pwd. When He launch the app for the second times, Instead of display the screen with login and pwd editText, I want to display another xml where there is a progressBar.</p> <p>To do that, I look at if it's a first authentication or not, and corresponding to the answer I put the good xml. When I just display the xml with the progressBar, I do the connection to the server with an asyncTask, and load what I need. </p> <p>That works perfectly on emulator, but when I put the app on m'y Nexus S (Android 2.3.3) that doesn't work, I've just a white screen, and nothing append.</p> <p>The code of my activity : </p> <pre><code>public class AuthentificationActivity extends Activity implements OnClickListener { private Button btnConnection; private EditText edtUserName; private EditText edtPassword; private TextView lblForgottenPass; private ProgressBar progressBar; private TextView txtProgression; private TextView txtAlerts; private EntirePersonBM entirePersonBM = new EntirePersonBM(); private String uidh = new String(); private String userName = new String(); private String password = new String(); private boolean isFirstConnection = true; public static boolean isFinishApp = false; private Selection selection; private SelectionResultSet resultSet; private SharedPreferences settings; private String alerts = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); settings = getSharedPreferences("login", 0); isFirstConnection = settings.getBoolean("isFirstConnection", true); try { if (isFirstConnection) { // Put connection screen, and help this.setContentView(R.layout.login); btnConnection = (Button) findViewById(R.id.btnConnection); edtUserName = (EditText) findViewById(R.id.edtUserName); edtPassword = (EditText) findViewById(R.id.edtPassword); lblForgottenPass = (TextView) findViewById(R.id.lblForgottenPass); progressBar = (ProgressBar) findViewById(R.id.progressBar1); txtProgression = (TextView) findViewById(R.id.textView1); txtAlerts = (TextView) findViewById(R.id.txtAlerts); btnConnection.setOnClickListener(this); lblForgottenPass.setOnClickListener(this); } else { // Directly connect to server with saved login/pwd // Retrieve login/pwd this.setContentView(R.layout.splash_login); txtProgression = (TextView) findViewById(R.id.txtProgression); userName = settings.getString("currentUserName", null); password = settings.getString("currentPwd", null); new ConnectionTask().execute(""); } } } catch (Exception e) { Alerts .showAlert(getString(R.string.AlertsErrorOccured), this, true); } } public void connect(SharedPreferences settings) { String login = settings.getString("currentUserName", null); String pwd = settings.getString("currentPwd", null); Log.v("Retrieve user", "Always log &gt;&gt;&gt; Login = " + login); // call server AuthentificationServletCall auth = new AuthentificationServletCall(); try { entirePersonBM = auth.Authentification("BoozterMobile", login, pwd, "passwordHash"); Log.v("call server", "Connecting &gt;&gt;&gt; OK"); } catch (Exception e) { Log.v("call server", "Connecting &gt;&gt;&gt; ERROR :" + e); e.printStackTrace(); } } public void loadMail() { selection = callsUtils.loadingSelection(UserControler.getInstance() .getUidh(), "NEW", null, String .valueOf(BoozterMobileConstants.MAX_VALUES_SUGGESTION), "desc"); if (selection != null) { resultSet = callsUtils.loadingMailList(UserControler.getInstance() .getUidh(), selection, String.valueOf(1)); } if (selection != null &amp;&amp; resultSet != null) { ListHeaderControler.getInstance().setFirstAuthentification(false); ListHeaderControler.getInstance().setRefresh(false); ListHeaderControler.getInstance().setSentMail(false); ListHeaderControler.getInstance().setSplashActivty(true); ListHeaderControler.getInstance().setSel(selection); ListHeaderControler.getInstance().setRs(resultSet); ListHeaderControler.getInstance().setMailHeaderList( resultSet.getEuis()); } } private class ConnectionTask extends AsyncTask&lt;String, Void, Object&gt; { protected Void doInBackground(String... args) { Log.v("AsyncTask", "Start connectionTask"); connect(settings); return null; } protected void onPostExecute(Object result) { // Pass the result data back to the main activity txtProgression.setText(getString(R.string.lblGetBlock)); new BlockLoaderTask().execute(""); } } private class BlockLoaderTask extends AsyncTask&lt;String, Void, Object&gt; { protected Void doInBackground(String... args) { Log.v("AsyncTask", "Start BlockLoaderTask"); BlockControler.getInstance().setListWhere( BlocksUtils.generateList(String .valueOf(BoozterMailConstants.BLOCK_CATEGORY_ID), true, null)); return null; } protected void onPostExecute(Object result) { // Pass the result data back to the main activity txtProgression.setText(getString(R.string.lblGetMails)); new MailLoaderTask().execute(""); } } private class MailLoaderTask extends AsyncTask&lt;String, Void, Object&gt; { protected Void doInBackground(String... args) { Log.v("AsyncTask", "Start BlockLoaderTask"); loadMail(); return null; } protected void onPostExecute(Object result) { // create Intent Intent defineIntent = new Intent(AuthentificationActivity.this, HeaderMailDisplayActivity.class); // Object that allows to pass the mail's seqnums and person's uidh // onto headerMail activity Bundle objetbunble = new Bundle(); objetbunble.putString("positionList", String.valueOf(1)); defineIntent.putExtras(objetbunble); // call headerMail activity AuthentificationActivity.this.startActivity(defineIntent); } } } </code></pre> <p>Please help me, I try many method, nothing works, and I given up hope of doing what I want</p> <p><strong>I just found a device with android 2.1, and it works fine. So there is something that is not compatible with android 2.3 ?</strong></p>
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    1. USNanis
    1. USNanis
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      1. POProblem with asyncTask that work's on emulator and not on device
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      1. VTUpMod
    1. COConnect the phone to the computer and use the debugger to see what's going wrong.
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      1. USFlo
    2. COI try that, but the ddms don't recognize the device.
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      1. USNanis
    3. COAt what point of the process do you get the blank screen? Is it running at all on the phone? did you succeed running something else?
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      1. POProblem with asyncTask that work's on emulator and not on device
      1. USbigstones
 

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