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POAutoCompleteTextView & Async class
 

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    <p>I am a rookie in the Android world and I built up a small training SW based on the 2.1 Google API.</p> <p>At that time I did not know yet about main thread and worker threads, so I put all my code in the main thread.</p> <p>Since, I fixed it with async classes for my netwkork access to fit the 4.0 Google API.</p> <p>Ok, but one last thing bothers me and I just can not find any clues.</p> <p>It is about an <em>AutoCompleteTextView</em> on a field <em>ville</em> ("town" in french).</p> <hr> <p><strong>BEFORE (2.1):</strong></p> <p></p> <pre><code>public void onTextChanged(CharSequence s, int start, int before, int count) { String result = null; InputStream is = null; List&lt;String&gt; r = new ArrayList&lt;String&gt;(); if (ville.enoughToFilter()) { is = connexionHttp(BASE_URL + "ville.php?ville=" + ville.getText()); result = lectureData(is); try { JSONArray jArray = new JSONArray(result); JSONObject json_data=null; for(int i=0;i&lt;jArray.length();i++) { json_data = jArray.getJSONObject(i); r.add(json_data.getString("VILLE")); a_idVil.add(json_data.getString("CLEF_VILLE")); } ville.setAdapter(new ArrayAdapter&lt;String&gt;(this,android.R.layout.simple_selectable_list_item,r)); ville.setOnItemSelectedListener(new villeListener()); } catch(JSONException e1) { Toast.makeText(getBaseContext(),e1.toString() ,Toast.LENGTH_LONG).show(); Log.d("***** TestActivity/onTextChanged: JSONException *****", "--"+e1.toString()+"--"); } catch(ParseException e1) { Toast.makeText(getBaseContext(),e1.toString() ,Toast.LENGTH_LONG).show(); Log.d("***** TestActivity/onTextChanged: ParseException *****", "--"+e1.toString()+"--"); } } } public class villeListener implements OnItemSelectedListener { public void onItemSelected(AdapterView&lt;?&gt; parent, View v, int pos, long row) { villePosition = pos; } public void onNothingSelected(AdapterView&lt;?&gt; arg0) { } } </code></pre> <p> </p> <p>runs 100% perfect:</p> <p>-> after the 4th caracters, the query runs on MySql to find all the towns beginning with the 4 given letters, and displays the selection list to select the right one: OK</p> <p>-> the listener give the index of the choosen town: OK</p> <hr> <p><strong>AFTER (4.0)</strong></p> <p></p> <pre><code>public void onTextChanged(CharSequence s, int start, int before, int count) { if (ville.enoughToFilter()) { new RemplirVille().execute(BASE_URL + "ville.php?ville=" + ville.getText()); Log.d("***********","AVANT"); ville.setOnItemSelectedListener(new villeListener()); Log.d("***********","APRES"); } } public class villeListener implements OnItemSelectedListener { public void onItemSelected(AdapterView&lt;?&gt; parent, View v, int pos, long row) { villePosition = pos; Log.d("*************9999999", "1111111111"); } public void onNothingSelected(AdapterView&lt;?&gt; arg0) { } } class RemplirVille extends AsyncTask&lt;String, String, List&lt;String&gt;&gt; { Integer errorMsgId; String errorMsgParam; protected List&lt;String&gt; doInBackground(String... param) { List&lt;String&gt; listeAffichageVille = new ArrayList&lt;String&gt;(); ArrayList&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(); try { HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(param[0]); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); if (response.getStatusLine().getStatusCode() &lt; 400) { HttpEntity entity = response.getEntity(); String entityStr = EntityUtils.toString(entity); JSONArray json_array = new JSONArray(entityStr); for(int i=0;i&lt;json_array.length();i++) { JSONObject json_ligne = json_array.getJSONObject(i); listeAffichageVille.add(json_ligne.getString("VILLE")); a_idVil.add(json_ligne.getString("CLEF_VILLE")); } } else { Log.d("***** TestActivity/ASYNC RemplirVille: EXCEPTION http error *****", "--"+response.getStatusLine().toString()+"--"); this.errorMsgId = R.string.http_site_error; listeAffichageVille = null; } } catch (Exception ex) { Log.d("***** TestActivity/ASYNC RemplirVille: EXCEPTION decode error *****", "--"+ex.toString()+"--"); this.errorMsgId = R.string.http_decode_error; this.errorMsgParam = ex.getLocalizedMessage(); listeAffichageVille = null; } return listeAffichageVille; } protected void onProgressUpdate(String... item) { } protected void onPreExecute(List&lt;String&gt; list) { } protected void onPostExecute(List&lt;String&gt; list) { if (list == null) { if (this.errorMsgId != null) { String msg = TestActivity.this.getString(this.errorMsgId); Toast.makeText(TestActivity.this,msg,Toast.LENGTH_LONG).show(); } } else { ville.setAdapter(new ArrayAdapter&lt;String&gt;(TestActivity.this,android.R.layout.simple_selectable_list_item,list)); } } } </code></pre> <p></p> <p>runs with troubles:</p> <p>-> you have to put in (enoughToFilter + 1) caractères to diplay the list of the towns: BAD</p> <p>-> the listener is even not run anymore: BAD</p> <hr> <p>In fact <strong>enoughToFilter</strong> works well, it launches the RemplirVille class which runs ok except that it does not displays the list!</p> <p>But, if you put in 1 more caracter: -> <strong>enoughToFilter</strong> still working well -> RemplirVille brings the data one more time.... but this time the selection list displays well.</p> <p>Any idea about that topic? I guess it is a context problem, but even with a GetApplicationCOntext I just can not get it.</p> <p>Thanks.</p>
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    1. COI am doing something similiar HERE!!! http://stackoverflow.com/questions/12854336/autocompletetextview-backed-by-cursorloader
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