Fix bug #13327889 Launching Wifi setting using available wifi network

...notification does not show ON/OFF button for wifi

- the notification was launching the WifiPickerActivity which is
a PreferenceActivity, so take care of this case too.

Change-Id: I64f58d4b9f75141626bb6f0266cf2f17fbb39fc7

src/com/android/settings/wifi/WifiSettings.java

@@ -409,10 +409,17 @@ public class WifiSettings extends RestrictedSettingsFragment
             final Activity activity = getActivity();
 
             mSwitch = new Switch(activity);
+            boolean addSwitch = false;
 
             if (activity instanceof SettingsActivity) {
                 SettingsActivity sa = (SettingsActivity) activity;
-                if (!sa.onIsHidingHeaders()) {
+                addSwitch = !sa.onIsHidingHeaders();
+            } else if (activity instanceof WifiPickerActivity) {
+                PreferenceActivity pa = (PreferenceActivity) activity;
+                addSwitch = pa.onIsHidingHeaders();
+            }
+
+            if (addSwitch) {
                 final int padding = activity.getResources().getDimensionPixelSize(
                         R.dimen.action_bar_switch_padding);
                 mSwitch.setPaddingRelative(0, 0, padding, 0);
@@ -423,7 +430,6 @@ public class WifiSettings extends RestrictedSettingsFragment
                         ActionBar.LayoutParams.WRAP_CONTENT,
                         Gravity.CENTER_VERTICAL | Gravity.END));
             }
-            }
 
             mWifiEnabler = new WifiEnabler(activity, mSwitch);
         }