StackOverflow2013

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POProblem with Async task
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copied!<p>I am trying to get data from a webserver and display a message saying "ok" or "invalid key". While it is getting the data it should produce a progress dialog. I have tried many methods including putting it inside of a thread however inside a thread the alert dialogs won't work. I have tried to use the async task method but it doesnt seem to work either. Can someone help me find a solution? Thanks</p> <pre><code>verifyCode.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { //I surround the async task with the progressdialog so that it should show while the method is working in the background final ProgressDialog progressDialog = ProgressDialog.show( Activate.this, "", "Loading..."); new checkActivationCode().execute(activationCode.toString().toUpperCase() ); progressDialog.dismiss(); } }); public class checkActivationCode extends AsyncTask<String, Void, Void> { @Override protected Void doInBackground(String... activationCode) { // TODO Auto-generated method stub try { DefaultHttpClient httpclient = new DefaultHttpClient(); HttpPost httpost = new HttpPost( "https://iphone-radar.com/accounts/confirmation"); JSONObject holder = new JSONObject(); holder.put("code", activationCode); StringEntity se = new StringEntity(holder.toString()); httpost.setEntity(se); httpost.setHeader("Accept", "application/json"); httpost.setHeader("Content-type", "application/json"); ResponseHandler responseHandler = new BasicResponseHandler(); String response = httpclient.execute(httpost, responseHandler); if (response != null) { org.json.JSONObject obj = new org.json.JSONObject(response); if ("00000000-0000-0000-0000-000000000000".equals(obj .getString("id"))) { new AlertDialog.Builder(Activate.this) .setTitle( getResources().getString( R.string.InvalidKey)) .setMessage( getResources() .getString( R.string.PleaseEntervalidRegistration)) .setNeutralButton("OK", null).show(); } else { // add permanent variables SharedPreferences prefs = getSharedPreferences( "Settings", 0); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean("ACTIVATED", true); editor.putString("ID", obj.getString("id")); editor.commit(); Intent imTracking = new Intent(Activate.this, ImTracking.class); imTracking.putExtra("ActivationSuccessful", true); // transfer more data startActivity(imTracking); } } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } } </code></pre>

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