Add or remove WFC setting when Wireless settings activity is resumed

WFC availability changes when SIM is inserted/removed. Settings
should be updated if this has happened.

Bug: 22642035
Change-Id: I361748440033e703b771175aa79767c53f0da458

1 files changed, 6 insertions, 5 deletions

diff --git a/src/com/android/settings/WirelessSettings.java b/src/com/android/settings/WirelessSettings.java
index 32d50bf..8cc98cc 100644
--- a/src/com/android/settings/WirelessSettings.java
+++ b/src/com/android/settings/WirelessSettings.java
@@ -237,11 +237,7 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
         mAirplaneModeEnabler = new AirplaneModeEnabler(activity, mAirplaneModePreference);
         mNfcEnabler = new NfcEnabler(activity, nfc, androidBeam);
 
-        if (ImsManager.isWfcEnabledByPlatform(activity)) {
-            mButtonWfc = (PreferenceScreen) findPreference(KEY_WFC_SETTINGS);
-        } else {
-            removePreference(KEY_WFC_SETTINGS);
-        }
+        mButtonWfc = (PreferenceScreen) findPreference(KEY_WFC_SETTINGS);
 
         // Remove NSD checkbox by default
         getPreferenceScreen().removePreference(nsd);
@@ -373,10 +369,15 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
             mNsdEnabler.resume();
         }
 
+        // update WFC setting
         final Context context = getActivity();
         if (ImsManager.isWfcEnabledByPlatform(context)) {
+            getPreferenceScreen().addPreference(mButtonWfc);
+
             mButtonWfc.setSummary(WifiCallingSettings.getWfcModeSummary(
                     context, ImsManager.getWfcMode(context)));
+        } else {
+            removePreference(KEY_WFC_SETTINGS);
         }
     }