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POAndroid: Under what circumstances would a Dialog appearing cause onPause() to be called?
 

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    <p>A snippet from the Android <a href="http://developer.android.com/guide/topics/fundamentals/activities.html#Lifecycle" rel="noreferrer">Activities</a> document(scroll down to the "<strong>foreground lifetime</strong>" line) says :</p> <blockquote> <p>An activity can frequently transition in and out of the foreground—for example, <code>onPause()</code> is called when the device goes to sleep <strong><em>or when a dialog appears</em></strong>.</p> </blockquote> <p>I don't quite understand this. Under what circumstances should this happen? Is <code>onPause()</code> called only if the context of the dialog in question is different from the activity on top of which the dialog is to be displayed?</p> <h2>EDIT: Adding code sample to illustrate my doubt in detail</h2> <p>Going by the above-mentioned quote from document, should my activity's <code>onPause()</code> method get called when the <code>AlertDialog</code> (or just the <code>Dialog</code>) in the following code gets displayed? Should I see the "onPause called" log entry when the dialog is displayed?</p> <p>But I don't see that happen. And it shouldn't either, if I have understood the Android life cycle correctly! So, what's the document pointing at then?</p> <pre><code>public class LifeCycleTestActivity extends Activity { private static final String TAG = "LifeCycleTest"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btn = (Button) findViewById(R.id.button1); btn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Log.d(TAG, "onClick"); AlertDialog dialog = new AlertDialog.Builder(LifeCycleTestActivity.this).create(); dialog.setMessage("You Clicked on the button"); dialog.setTitle("Dialog!"); dialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); dialog.setCancelable(true); dialog.show(); /* Dialog dialog = new Dialog(LifeCycleTestActivity.this); dialog.setTitle("Dialog!"); dialog.setCancelable(true); dialog.show(); */ } }); } @Override protected void onPause() { Log.d(TAG, "onPause() called"); super.onPause(); } @Override protected void onResume() { super.onResume(); Log.d(TAG, "onResume() called"); } } </code></pre>
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