Fix apn restore issue for multi-sim

If "Restore to Default" option is selected on apn menu, then
all carriers table entries are deleted and apns file is read
again. Due to this, user added apns on both subs are lost though
restore is selected for one sub.
Fix is to delete all apns except for user added apns on the
other available sub.

Ticket: PAELLA-271

Change-Id: I4c01e87829c7deca2cf29b479149d79d7e78c9c7
CRs-Fixed: 985437

1 files changed, 18 insertions, 1 deletions

diff --git a/src/com/android/providers/telephony/TelephonyProvider.java b/src/com/android/providers/telephony/TelephonyProvider.java
index bd87c34..8669cdf 100644
--- a/src/com/android/providers/telephony/TelephonyProvider.java
+++ b/src/com/android/providers/telephony/TelephonyProvider.java
@@ -2429,9 +2429,26 @@ public class TelephonyProvider extends ContentProvider
 
     private void restoreDefaultAPN(int subId) {
         SQLiteDatabase db = mOpenHelper.getWritableDatabase();
+        TelephonyManager mTm =
+               (TelephonyManager) getContext().getSystemService(Context.TELEPHONY_SERVICE);
+        SubscriptionManager sm = SubscriptionManager.from(getContext());
+        String operatorNumeric = null;
+        String where = null;
+        List<SubscriptionInfo> subInfoList = sm.getActiveSubscriptionInfoList();
+        if (subInfoList != null && subInfoList.size() > 1) {
+            where = "not (";
+            for (SubscriptionInfo subInfo : subInfoList) {
+               if (subId != subInfo.getSubscriptionId()) {
+                  operatorNumeric = mTm.getIccOperatorNumericForData(subInfo.getSubscriptionId());
+                  where = where + "numeric=" + operatorNumeric + " and ";
+               }
+            }
+            where = where + "edited=" + Telephony.Carriers.USER_EDITED + ")";
+        }
+        log("restoreDefaultAPN: where: " + where);
 
         try {
-            db.delete(CARRIERS_TABLE, null, null);
+            db.delete(CARRIERS_TABLE, where, null);
         } catch (SQLException e) {
             loge("got exception when deleting to restore: " + e);
         }