Listen wifi entry change to make sure UI correct.

Bug: 319905522
Test: make pass.
Test: atest pass.
Change-Id: I0900caf6521bd9a250e85863f48e39668734f1be

src/com/android/settings/network/NetworkMobileProviderController.java

@@ -24,7 +24,6 @@ import androidx.preference.PreferenceCategory;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.core.BasePreferenceController;
-import com.android.settings.wifi.WifiPickerTrackerHelper;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 
 /**
@@ -117,12 +116,6 @@ public class NetworkMobileProviderController extends BasePreferenceController im
         mPreferenceCategory.setVisible(available);
     }
 
-    public void setWifiPickerTrackerHelper(WifiPickerTrackerHelper helper) {
-        if (mSubscriptionsController != null) {
-            mSubscriptionsController.setWifiPickerTrackerHelper(helper);
-        }
-    }
-
     /**
      * Hides the preference.
      */

src/com/android/settings/network/NetworkProviderSettings.java

@@ -477,10 +477,6 @@ public class NetworkProviderSettings extends RestrictedSettingsFragment
             mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID);
         }
 
-        if (mNetworkMobileProviderController != null) {
-            mNetworkMobileProviderController.setWifiPickerTrackerHelper(mWifiPickerTrackerHelper);
-        }
-
         requireActivity().addMenuProvider(mMenuProvider);
     }
 

src/com/android/settings/network/SubscriptionsPreferenceController.java

@@ -68,6 +68,7 @@ import com.android.settingslib.mobile.MobileMappings.Config;
 import com.android.settingslib.mobile.TelephonyIcons;
 import com.android.settingslib.net.SignalStrengthUtil;
 import com.android.wifitrackerlib.WifiEntry;
+import com.android.wifitrackerlib.WifiPickerTracker;
 
 import java.util.Collections;
 import java.util.List;
@@ -82,7 +83,7 @@ public class SubscriptionsPreferenceController extends AbstractPreferenceControl
         LifecycleObserver, SubscriptionsChangeListener.SubscriptionsChangeListenerClient,
         MobileDataEnabledListener.Client, DataConnectivityListener.Client,
         SignalStrengthListener.Callback, TelephonyDisplayInfoListener.Callback,
-        TelephonyCallback.CarrierNetworkListener {
+        TelephonyCallback.CarrierNetworkListener, WifiPickerTracker.WifiPickerTrackerCallback {
     private static final String TAG = "SubscriptionsPrefCntrlr";
 
     private UpdateListener mUpdateListener;
@@ -95,7 +96,8 @@ public class SubscriptionsPreferenceController extends AbstractPreferenceControl
     private DataConnectivityListener mConnectivityListener;
     private SignalStrengthListener mSignalStrengthListener;
     private TelephonyDisplayInfoListener mTelephonyDisplayInfoListener;
-    private WifiPickerTrackerHelper mWifiPickerTrackerHelper;
+    @VisibleForTesting
+    WifiPickerTrackerHelper mWifiPickerTrackerHelper;
     private final WifiManager mWifiManager;
     private boolean mCarrierNetworkChangeMode;
 
@@ -163,6 +165,7 @@ public class SubscriptionsPreferenceController extends AbstractPreferenceControl
         mSignalStrengthListener = new SignalStrengthListener(context, this);
         mTelephonyDisplayInfoListener = new TelephonyDisplayInfoListener(context, this);
         lifecycle.addObserver(this);
+        mWifiPickerTrackerHelper = new WifiPickerTrackerHelper(lifecycle, context, this);
         mSubsPrefCtrlInjector = createSubsPrefCtrlInjector();
         mConfig = mSubsPrefCtrlInjector.getConfig(mContext);
     }
@@ -485,8 +488,24 @@ public class SubscriptionsPreferenceController extends AbstractPreferenceControl
         update();
     }
 
-    public void setWifiPickerTrackerHelper(WifiPickerTrackerHelper helper) {
-        mWifiPickerTrackerHelper = helper;
+    @Override
+    public void onNumSavedNetworksChanged() {
+        //Do nothing
+    }
+
+    @Override
+    public void onNumSavedSubscriptionsChanged() {
+        //Do nothing
+    }
+
+    @Override
+    public void onWifiStateChanged() {
+        update();
+    }
+
+    @Override
+    public void onWifiEntriesChanged() {
+        update();
     }
 
     @VisibleForTesting

tests/unit/src/com/android/settings/network/SubscriptionsPreferenceControllerTest.java

@@ -165,7 +165,7 @@ public class SubscriptionsPreferenceControllerTest {
         mController =  new FakeSubscriptionsPreferenceController(mContext, mLifecycle,
                 mUpdateListener, KEY, 5);
         Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
-        mController.setWifiPickerTrackerHelper(mWifiPickerTrackerHelper);
+        mController.mWifiPickerTrackerHelper = mWifiPickerTrackerHelper;
     }
 
     @After