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    <p>I'm not sure which emulator you are testing with, but <code>onPause</code> is the one method that is <em>always</em> guaranteed to be called when your <code>Activity</code> loses focus (and I say <em>always</em> because on some devices, specifically those running Android 3.2+, <code>onStop</code> is not always guaranteed to be called before the <code>Activity</code> is destroyed).</p> <p>A nice way to understand the <code>Activity</code> lifecycle for beginners is to litter your overriden methods with <code>Log</code>s. For example:</p> <pre><code>public class SampleActivity extends Activity { /** * A string constant to use in calls to the "log" methods. Its * value is often given by the name of the class, as this will * allow you to easily determine where log methods are coming * from when you analyze your logcat output. */ private static final String TAG = "SampleActivity"; /** * Toggle this boolean constant's value to turn on/off logging * within the class. */ private static final boolean VERBOSE = true; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (VERBOSE) Log.v(TAG, "+++ ON CREATE +++"); } @Override public void onStart() { super.onStart(); if (VERBOSE) Log.v(TAG, "++ ON START ++"); } @Override public void onResume() { super.onResume(); if (VERBOSE) Log.v(TAG, "+ ON RESUME +"); } @Override public void onPause() { super.onPause(); if (VERBOSE) Log.v(TAG, "- ON PAUSE -"); } @Override public void onStop() { super.onStop(); if (VERBOSE) Log.v(TAG, "-- ON STOP --"); } @Override public void onDestroy() { super.onDestroy(); if (VERBOSE) Log.v(TAG, "- ON DESTROY -"); } } </code></pre>
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    1. USAlex Lockwood
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    1. COThanks Alex, I already have the log markups, I should have mentioned that. What the logs are showing me is that onPause() does indeed get called. The trouble for me in the emulator is that I want onStop() not to be called. So when I hit the home button, my logs show me that onPause() indeed is called, as expected. However, when I switch apps in the emulator (from my app to the web browser for example), my logs also show me that onStop() for my app is getting called. I would expect onStop() only to get called if the sys is starved for resources, and perhaps the VM is?
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      1. USStephan Doliov
    2. COHmm... did you mess around with the Developer settings? Settings --> Developer settings --> destroy all activities, perhaps is checked? Other than that, it's important to understand that `onStop` is never guaranteed to be called... as seen here: http://bit.ly/OMB0as
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    3. CO@StephanDoliov I mentioned checking the developers settings because it seems odd that `onStop` is NEVER called. I'm not sure why that is happening. I'm betting that if you test on an actual device you won't get the same behavior though. What happens when you press the "home" button? This is one of the popular ways `onStop` is called.
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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