Keep setting of "TurnOff hotspot automatically" when AP is changed

When AP config is changed, setting of "TurnOff hotspot automatically"
will be reset to default. Hence keep the setting when AP config changed.
Keep setting of whether auto shut down is enabled when AP
config changed.

Co-authored-by: Fangxiao Cao <fangxiao.x.cao@sony.com>

Test: manual test
Bug: 235370570
Change-Id: Ibd3d59b6a86edaf1253a2c9b035576e60a7beb96

src/com/android/settings/wifi/tether/WifiTetherSettings.java

@@ -32,7 +32,6 @@ import android.util.FeatureFlagUtils;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
-import androidx.preference.PreferenceGroup;
 
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
@@ -70,6 +69,7 @@ public class WifiTetherSettings extends RestrictedDashboardFragment
     private WifiTetherPasswordPreferenceController mPasswordPreferenceController;
     private WifiTetherSecurityPreferenceController mSecurityPreferenceController;
     private WifiTetherMaximizeCompatibilityPreferenceController mMaxCompatibilityPrefController;
+    private WifiTetherAutoOffPreferenceController mWifiTetherAutoOffPreferenceController;
 
     private WifiManager mWifiManager;
     private boolean mRestartWifiApAfterConfigChange;
@@ -117,6 +117,7 @@ public class WifiTetherSettings extends RestrictedDashboardFragment
         mPasswordPreferenceController = use(WifiTetherPasswordPreferenceController.class);
         mMaxCompatibilityPrefController =
                 use(WifiTetherMaximizeCompatibilityPreferenceController.class);
+        mWifiTetherAutoOffPreferenceController = use(WifiTetherAutoOffPreferenceController.class);
     }
 
     @Override
@@ -215,6 +216,8 @@ public class WifiTetherSettings extends RestrictedDashboardFragment
                     securityType);
         }
         mMaxCompatibilityPrefController.setupMaximizeCompatibility(configBuilder);
+        configBuilder.setAutoShutdownEnabled(
+                mWifiTetherAutoOffPreferenceController.isEnabled());
         return configBuilder.build();
     }