[WifiTrackerLib] Fix Passpoint entry scan updates

Fixed PasspointWifiEntry handling in wifi picker, saved networks page,
and network details page to update correctly with empty scans when out
of range.

Test: atest WifiTrackerLibTests
Bug: 70983952
Change-Id: I8761aee5b478e3d225e026cb69d21bab69168955
(cherry picked from commit 6d77b880dad02eccb44b5c75d97eaf20de669a27)
Merged-In: I8761aee5b478e3d225e026cb69d21bab69168955

1 files changed, 13 insertions, 0 deletions

diff --git a/libs/WifiTrackerLib/src/com/android/wifitrackerlib/SavedNetworkTracker.java b/libs/WifiTrackerLib/src/com/android/wifitrackerlib/SavedNetworkTracker.java
index f6016677f..be0c7fd94 100644
--- a/libs/WifiTrackerLib/src/com/android/wifitrackerlib/SavedNetworkTracker.java
+++ b/libs/WifiTrackerLib/src/com/android/wifitrackerlib/SavedNetworkTracker.java
@@ -51,6 +51,8 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
+import java.util.TreeSet;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -217,11 +219,13 @@ public class SavedNetworkTracker extends BaseWifiTracker {
     private void updatePasspointWifiEntryScans(@NonNull List<ScanResult> scanResults) {
         checkNotNull(scanResults, "Scan Result list should not be null!");
 
+        Set<String> seenKeys = new TreeSet<>();
         List<Pair<WifiConfiguration, Map<Integer, List<ScanResult>>>> matchingWifiConfigs =
                 mWifiManager.getAllMatchingWifiConfigs(scanResults);
         for (Pair<WifiConfiguration, Map<Integer, List<ScanResult>>> pair : matchingWifiConfigs) {
             final WifiConfiguration wifiConfig = pair.first;
             final String key = uniqueIdToPasspointWifiEntryKey(wifiConfig.getKey());
+            seenKeys.add(key);
             // Skip in case we don't have a PasspointWifiEntry for the returned unique identifier.
             if (!mPasspointWifiEntryCache.containsKey(key)) {
                 continue;
@@ -231,6 +235,15 @@ public class SavedNetworkTracker extends BaseWifiTracker {
                     pair.second.get(WifiManager.PASSPOINT_HOME_NETWORK),
                     pair.second.get(WifiManager.PASSPOINT_ROAMING_NETWORK));
         }
+
+        for (PasspointWifiEntry entry : mPasspointWifiEntryCache.values()) {
+            if (!seenKeys.contains(entry.getKey())) {
+                // No AP in range; set scan results and connection config to null.
+                entry.updateScanResultInfo(null /* wifiConfig */,
+                        null /* homeScanResults */,
+                        null /* roamingScanResults */);
+            }
+        }
     }
 
     /**