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POAvoiding time consuming data loading during Fragment rotation
 

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    <p>I want to avoid time consuming data loading during <code>Fragment</code> rotation.</p> <pre><code>public class WatchlistFragment extends SherlockListFragment { @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (savedInstanceState == null) { data = getTimeConsumingData(); } else { Log.i(TAG, "savedInstanceState is not null!"); // Avoid performing time consuming data operation during rotation changes. // But I never have chance to reach here !?!? data = savedInstanceState.getStringArray("data"); } setListAdapter(new ArrayAdapter&lt;String&gt;(getActivity(), android.R.layout.simple_list_item_1, data)); } public String[] getTimeConsumingData() { Log.i(TAG, "WatchlistFragment getTimeConsumingData"); return new String[] { "A", "B", "C"}; } @Override public void onSaveInstanceState(Bundle outState) { Log.i(TAG, "WatchlistFragment onSaveInstanceState"); super.onSaveInstanceState(outState); outState.putStringArray("data", data); } private String[] data = null; private static final String TAG = WatchlistFragment.class.getSimpleName(); } </code></pre> <p>Strangely, <code>savedInstanceState</code> in <code>onActivityCreated</code> is always null even I perform several rotation.</p> <p>Note, I prefer not to use <code>setRetainInstance(true)</code> as described <a href="https://stackoverflow.com/questions/11853389/android-fragments-retaining-data">Android Fragments Retaining Data</a> The author is using <code>onSaveInstanceState</code>. Just that I'm not sure why mine doesn't work.</p>
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