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POHow to implement a ProgressDialog while Activity requests a SoapObject from a Web Service?
 

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  1. POHow to implement a ProgressDialog while Activity requests a SoapObject from a Web Service?
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    <p>I know that ProgressDialog with Threads questions have been asked many times but none of the solutions seem to work for my project. Basically what I want to do is this: 1) when a user clicks a button the Activity sends an auth request to the server 2) while this is being done a ProgressDialog is shown 3) when the reponse comes I want to dismiss the ProgressDialog and the return object to be read and interpreted by the Activity</p> <p>If I: 1) set the Thread to update the Application field with the reponse, the next method (which is outside of the Thread) throws an NPE when accessing the field 2) if I include the next method in the Thread, the second method throws a 'java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()'</p> <p>Sorry for a long text, but I am totally losing it over this... My code is sth like this:</p> <pre><code>public class XXX extends Activity implements OnClickListener { // (...) private SoapObject returnObject; private String response; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // (...) authProgressDialog = ProgressDialog.show(XXX.this, "", "Authenticating...", true, false); new Thread(new Runnable() { @Override public void run() { authenticate(); // method that calls the API via SOAP authenticateReal(); // method that handles the response } }).start(); mHandler = new Handler() { public void handleMessage(Message msg) { super.handleMessage(msg); switch (msg.what) { case 10: authProgressDialog.dismiss(); break; } } }; } } public void authenticate() { // API stuff (...) AndroidHttpTransport aht = new AndroidHttpTransport(URL); try { aht.call(SOAP_ACTION, soapEnvelope); returnObject = (SoapObject) soapEnvelope.getResponse(); response = returnObject.getProperty("ResponseStatus").toString(); } catch (Exception e) { e.printStackTrace(); } finally { mHandler.sendEmptyMessage(10); } } // Method that needs to access returnObject and reponse objects and // it is here where the NPE's or other exceptions are thrown public void authenticateReal() { // (...) } </code></pre>
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    1. COI could be missing something totally fundamental about threads here because I never really read up enough them tbh... sorry for a noobish q. Contents of authenticateReal() could easily be transferred to the try block of autenticate() .
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