wifi: don't disable AP on sub change if it's the same sub

Ticket: CYNGNOS-1303, CYNGNOS-877

Change-Id: I653fdf40b1419c96e8d611b18d8d899cb5629f5c
Signed-off-by: Roman Birg <roman@cyngn.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/service/java/com/android/server/wifi/WifiController.java b/service/java/com/android/server/wifi/WifiController.java
index 71735f5da..320db8d59 100644
--- a/service/java/com/android/server/wifi/WifiController.java
+++ b/service/java/com/android/server/wifi/WifiController.java
@@ -36,6 +36,7 @@ import android.os.Message;
 import android.os.SystemClock;
 import android.os.WorkSource;
 import android.provider.Settings;
+import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.util.Slog;
 
@@ -631,13 +632,27 @@ class WifiController extends StateMachine {
         public void enter() {
             mSubListener = new SubscriptionManager.OnSubscriptionsChangedListener() {
                     boolean firstChange = true;
+                    SubscriptionInfo lastSub;
                     @Override
                     public void onSubscriptionsChanged() {
+                        final SubscriptionInfo currentSub = SubscriptionManager.from(mContext)
+                                .getDefaultDataSubscriptionInfo();
                         if (firstChange) {
+                            lastSub = currentSub;
                             // we always get a state change on registration.
                             firstChange = false;
                             return;
                         }
+                        if (currentSub == null) {
+                            // don't disable when we're not sure yet.
+                            return;
+                        }
+                        if (lastSub != null && currentSub.getSubscriptionId()
+                                == lastSub.getSubscriptionId()) {
+                            // don't disable if it's the same subscription
+                            return;
+                        }
+                        lastSub = currentSub;
                         Toast.makeText(mContext,
                                 com.android.internal.R.string.subscription_change_disabled_wifi_ap,
                                 Toast.LENGTH_SHORT).show();