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PODon't reset AsyncTask and use onSaveInstanceState
 

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  1. PODon't reset AsyncTask and use onSaveInstanceState
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    <p>In my <code>MainActivity</code> I have a login <code>view</code>. While I check for username and password in <code>AsyncTask</code>, I show a <code>ProgressDialog</code>. </p> <p>I asked in another question how to not reseting <code>AsyncTask</code>and I achieved it with <code>AndroidManifest.xml</code>, but I need to save username and password for not to be removed if I change orientation, but <code>onSaveInstanceState</code> and <code>onRestoreInstanceState</code> methods are not being called.</p> <p>I think the problem must be related to <code>android:configChanges</code>in <code>AndroidManifest</code>. Can you help me?</p> <p><strong>Here is my code:</strong></p> <p><strong>MainActivity.java</strong></p> <pre><code>//Method called when login Button is pressed public void entrar(View view) { /* Escondemos el teclado */ InputMethodManager imm = (InputMethodManager)getSystemService( Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(editTextUsuario.getWindowToken(), 0); /* Comprobamos si hay conexión a Internet */ if(myApplication.isOnline()) { LoadingMainTask myWebFetch = new LoadingMainTask(this); myWebFetch.execute(); } /* Si no se dispone de conexión a Internet, mostramos un error */ else { myApplication.mostrarMensaje(this, R.string.error_conexion_titulo, R.string.error_conexion_mensaje); } } private class LoadingMainTask extends AsyncTask&lt;String, Void, Boolean&gt; { private ProgressDialog dialog; private volatile boolean running = true; private MainActivity activity; TuplaUsuario tuplaUsuario = new TuplaUsuario(); private LoadingMainTask(MainActivity activity) { this.activity = activity; context = activity; dialog = new ProgressDialog(context); dialog.setCancelable(true); dialog.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { cancel(true); } }); } /** application context. */ private Context context; @Override protected void onCancelled() { running = false; } @Override protected void onPreExecute() { this.dialog.setMessage(getString(R.string.loading)); this.dialog.show(); } @Override protected void onPostExecute(final Boolean success) { if (dialog.isShowing()) { dialog.dismiss(); } if (success) { /* Si el login no es correcto, mostramos un error por pantalla */ if (!tuplaUsuario.getOk()) { myApplication.mostrarMensaje(activity, R.string.error_datos_login_titulo, tuplaUsuario.getMensaje()); } /* Entrar */ else { Intent intent = new Intent(activity, TabsFacturasActivity.class); startActivity(intent); } } else { System.out.println("throw exception post"); myApplication.throwException(activity); } } @Override protected Boolean doInBackground(final String... args) { while (running) { try{ String usuario = String.valueOf((editTextUsuario).getText()); String password = String.valueOf((editTextPassword).getText()); /* Check login */ } return true; } catch (Exception e){ return false; } } return null; } } </code></pre> <p><strong>AndroidManifest.xml</strong></p> <pre><code>&lt;application android:allowBackup="true" //... android:configChanges="orientation" &gt; &lt;activity //This next two lines are what I was said to use and that works. Other answers were not useful android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" android:windowSoftInputMode="adjustPan" android:theme="@style/AppTheme" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; </code></pre>
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