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copied!<p>When the users presses the back button in my application. Here is the scenario:</p> <ol> <li>User starts the application - Activity shows up </li> <li>User presses back button</li> <li>User re-starts the application. <strong>At this point application just shows a blank screen, none of the buttons(home/back) respond, after some time Force-close dialog comes up.</strong><br> NOTE: If the user presses "Home" and then relaunches the app, this doesn't happen, only if the user presses "Back" and then relaunches it.</li> </ol> <p>In my onCreate() I have some network setup code. However, onDestroy() has the corresponding cleanup code, so I don't understand why this is happening.</p> <pre><code>@Override public void onCreate(Bundle savedInstanceState) { Log.d(DEBUG_TAG, "onCreate()"); super.onCreate(savedInstanceState); setContentView(R.layout.main); // Aquire the multicast lock // Create an instance of JmDNS // Add a listener for Bonjour services of a given type } @Override protected void onDestroy() { Log.d(DEBUG_TAG, "onDestroy()"); // Remove the services listener // Set the reference to JmDNS instance null // Release the multicast lock super.onDestroy(); } </code></pre> <p>Not sure what is going on, and don't know how to debug this.</p> <p>Interestingly - <a href="http://melloware.com/products/zeroconf/" rel="nofollow">"Zeroconf Browser"</a> a popular app that I downloaded from Android Market to use to debug mine - seems to have the same issue.</p> <p>EDIT: Changed the code from onStart()/onStop() to onCreate()/onDestroy(). Same problem as before.</p> <p>EDIT: For anyone who runs in a similar problem, this is what was causing my misery. Android code wasn't the culprit: <a href="http://sourceforge.net/tracker/index.php?func=detail&aid=2933183&group_id=93852&atid=605791" rel="nofollow">http://sourceforge.net/tracker/index.php?func=detail&aid=2933183&group_id=93852&atid=605791</a> </p>

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