Use WifiPickerTracker to get connected WifiEntry

Use WifiPickerTracker.getConnectedWifiEntry API to get a WifiEntry to
display at the top of the Wifi picker as the connected network.

Test: manual - visual verification of connected entry at the top of the
wifi picker.
Bug: 70983952

Change-Id: Iec6e1c9fe950397f62350194d8b24791a7eac30a
diff --git a/src/com/android/settings/wifi/WifiSettings2.java b/src/com/android/settings/wifi/WifiSettings2.java
index c06aef7..3c71e36 100644
--- a/src/com/android/settings/wifi/WifiSettings2.java
+++ b/src/com/android/settings/wifi/WifiSettings2.java
@@ -486,6 +486,22 @@
         mConnectedWifiEntryPreferenceCategory.setVisible(true);
         mWifiEntryPreferenceCategory.setVisible(true);
 
+        final WifiEntry connectedEntry = mWifiPickerTracker.getConnectedWifiEntry();
+        if (connectedEntry != null) {
+            final LongPressWifiEntryPreference connectedPref =
+                    mConnectedWifiEntryPreferenceCategory.findPreference(connectedEntry.getKey());
+            if (connectedPref == null || connectedPref.getWifiEntry() != connectedEntry) {
+                mConnectedWifiEntryPreferenceCategory.removeAll();
+                final LongPressWifiEntryPreference pref =
+                        createLongPressWifiEntryPreference(connectedEntry);
+                pref.setKey(connectedEntry.getKey());
+                pref.refresh();
+                mConnectedWifiEntryPreferenceCategory.addPreference(pref);
+            }
+        } else {
+            mConnectedWifiEntryPreferenceCategory.removeAll();
+        }
+
         int index = 0;
         cacheRemoveAllPrefs(mWifiEntryPreferenceCategory);
         List<WifiEntry> wifiEntries = mWifiPickerTracker.getWifiEntries();