Add buttons to PreferenceFragment

Question

I want to add a couple buttons to the bottom of my preferences screen for setting defaults and restoring defaults. This answer doesn't cover how to do this using PreferenceFragment. What is the recommended way to accomplish this.

Activity that loads the preferences fragment:

public class SettingsActivity extends Activity {

    @Override
    public void onCreate( Bundle savedInstanceState) {

        super.onCreate( savedInstanceState);

        // load up the preferences fragment
        getFragmentManager().beginTransaction().replace( android.R.id.content, new PrefsSettingsFragment()).commit();
    }
}

PreferenceFragment implementation:

public class PrefsSettingsFragment extends PreferenceFragment {

    @Override
    public void onCreate( Bundle savedInstanceState) {

        super.onCreate( savedInstanceState);  

        addPreferencesFromResource( R.xml.preferences);             
    }       
}

preferences.xml:

<?xml version="1.0"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">

    <EditTextPreference android:key="edit_text_preference_server_address" android:title="@string/preference_server_address"/>
    <SwitchPreference android:key="switch_preference_bat" android:title="@string/preference_bat"/>
    <SwitchPreference android:key="switch_preference_comm" android:title="@string/preference_comm"/>
    <SwitchPreference android:key="switch_preference_dev_mode" android:title="@string/preference_dev_mode" android:defaultValue="true"/>

</PreferenceScreen>

Answer 1

Just create your own layout for the settings activity which contains list view with id @android:id/list

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <FrameLayout
        android:id="@+id/fragment"
        android:layout_weight="1"
        android:layout_width="match_parent"
        android:layout_height="0dp">
        <ListView
            android:id="@android:id/list"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    </FrameLayout>

    <Button
        android:id="@+id/button"
        android:text="Save"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

And then in the activity class set the content view before adding preference fragment

public class SettingsActivity extends Activity {

    @Override
    public void onCreate( Bundle savedInstanceState) {    
        super.onCreate( savedInstanceState);
        setContentView(R.layout.settings_activity)

        // load up the preferences fragment
        getFragmentManager().beginTransaction().replace( android.R.id.content, new PrefsSettingsFragment()).commit();
    }
}