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POHow to listen for preference changes within a PreferenceFragment?
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copied!<p>As described <a href="http://developer.android.com/guide/topics/ui/settings.html#Fragment" rel="noreferrer">here</a>, I am subclassing PreferenceFragment and displaying it inside an Activity. That document explains how to listen for preference changes <a href="http://developer.android.com/guide/topics/ui/settings.html#Listening" rel="noreferrer">here</a>, but only if you subclass PreferenceActivity. Since I'm not doing that, how do I listen for preference changes?</p> <p>I've tried implementing OnSharedPreferenceChangeListener in my PreferenceFragment but it does not seem to work (<code>onSharedPreferenceChanged</code> never seems to get called).</p> <p>This is my code so far:</p> <p><strong>SettingsActivity.java</strong></p> <pre><code>public class SettingsActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Display the fragment as the main content. getFragmentManager().beginTransaction().replace(android.R.id.content, new SettingsFragment()).commit(); } } </code></pre> <p><strong>SettingsFragment.java</strong></p> <pre><code>public class SettingsFragment extends PreferenceFragment implements OnSharedPreferenceChangeListener { public static final String KEY_PREF_EXERCISES = "pref_number_of_exercises"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Load the preferences from an XML resource addPreferencesFromResource(R.xml.preferences); } @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { //IT NEVER GETS IN HERE! if (key.equals(KEY_PREF_EXERCISES)) { // Set summary to be the user-description for the selected value Preference exercisesPref = findPreference(key); exercisesPref.setSummary(sharedPreferences.getString(key, "")); } } } </code></pre> <p><strong>preferences.xml</strong></p> <pre><code><?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <EditTextPreference android:defaultValue="15" android:enabled="true" android:key="pref_number_of_exercises" android:numeric="integer" android:title="Number of exercises" /> </PreferenceScreen> </code></pre> <p>Also, is the PreferenceFragment even the right place to listen for preference changes or should I do it within the Activity?</p>

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