Added slot index version of getNetworkCountryIso

Added this API to get network country ISO so in SIM
absent case, we can get the information from the 2nd
phone.

Bug: 141128426
Test: CTS
Merged-In: Ib02e4d145cb39683bcb13d39715003095ad93eef
Change-Id: Ib02e4d145cb39683bcb13d39715003095ad93eef
(cherry picked from commit a5fedc5c02)

api/current.txt

@@ -44898,6 +44898,7 @@ package android.telephony {
     field public static final int DATA_ROAMING_DISABLE = 0; // 0x0
     field public static final int DATA_ROAMING_ENABLE = 1; // 0x1
     field public static final int DEFAULT_SUBSCRIPTION_ID = 2147483647; // 0x7fffffff
+    field public static final String EXTRA_SLOT_INDEX = "android.telephony.extra.SLOT_INDEX";
     field public static final String EXTRA_SUBSCRIPTION_INDEX = "android.telephony.extra.SUBSCRIPTION_INDEX";
     field public static final int INVALID_SIM_SLOT_INDEX = -1; // 0xffffffff
     field public static final int INVALID_SUBSCRIPTION_ID = -1; // 0xffffffff

api/system-current.txt

@@ -8126,6 +8126,7 @@ package android.telephony {
     method @Nullable @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public String getIsimIst();
     method @NonNull @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public java.util.Map<java.lang.Integer,java.lang.Integer> getLogicalToPhysicalSlotMapping();
     method public static long getMaxNumberVerificationTimeoutMillis();
+    method @NonNull public String getNetworkCountryIso(int);
     method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public long getPreferredNetworkTypeBitmask();
     method @RequiresPermission(anyOf={android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE, android.Manifest.permission.READ_PHONE_STATE}) public int getRadioPowerState();
     method public int getSimApplicationState();

api/test-current.txt

@@ -2876,6 +2876,7 @@ package android.telephony {
     method public int checkCarrierPrivilegesForPackage(String);
     method public int getCarrierIdListVersion();
     method @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public String getLine1AlphaTag();
+    method @NonNull public String getNetworkCountryIso(int);
     method public android.util.Pair<java.lang.Integer,java.lang.Integer> getRadioHalVersion();
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void refreshUiccProfile();
     method @Deprecated public void setCarrierTestOverride(String, String, String, String, String, String, String);

telephony/java/android/telephony/SubscriptionManager.java

@@ -885,6 +885,11 @@ public class SubscriptionManager {
      */
     public static final String EXTRA_SUBSCRIPTION_INDEX = "android.telephony.extra.SUBSCRIPTION_INDEX";
 
+    /**
+     * Integer extra to specify SIM slot index.
+     */
+    public static final String EXTRA_SLOT_INDEX = "android.telephony.extra.SLOT_INDEX";
+
     private final Context mContext;
     private volatile INetworkPolicyManager mNetworkPolicy;
 
@@ -2112,6 +2117,7 @@ public class SubscriptionManager {
         if (VDBG) logd("putPhoneIdAndSubIdExtra: phoneId=" + phoneId + " subId=" + subId);
         intent.putExtra(PhoneConstants.SUBSCRIPTION_KEY, subId);
         intent.putExtra(EXTRA_SUBSCRIPTION_INDEX, subId);
+        intent.putExtra(EXTRA_SLOT_INDEX, phoneId);
         intent.putExtra(PhoneConstants.PHONE_KEY, phoneId);
     }
 

telephony/java/android/telephony/TelephonyManager.java

@@ -2428,41 +2428,37 @@ public class TelephonyManager {
      * @return the lowercase 2 character ISO-3166 country code, or empty string if not available.
      */
     public String getNetworkCountryIso() {
-        return getNetworkCountryIsoForPhone(getPhoneId());
+        return getNetworkCountryIso(getPhoneId());
     }
 
     /**
-     * Returns the ISO country code equivalent of the MCC (Mobile Country Code) of the current
+     * Returns the ISO-3166 country code equivalent of the MCC (Mobile Country Code) of the current
      * registered operator or the cell nearby, if available.
      * <p>
+     * The ISO-3166 country code is provided in lowercase 2 character format.
+     * <p>
+     * Note: In multi-sim, this returns a shared emergency network country iso from other
+     * subscription if the subscription used to create the TelephonyManager doesn't camp on
+     * a network due to some reason (e.g. pin/puk locked), or sim is absent in the corresponding
+     * slot.
      * Note: Result may be unreliable on CDMA networks (use {@link #getPhoneType()} to determine
      * if on a CDMA network).
-     *
-     * @param subId for which Network CountryIso is returned
-     * @hide
-     */
-    @UnsupportedAppUsage
-    public String getNetworkCountryIso(int subId) {
-        return getNetworkCountryIsoForPhone(getPhoneId(subId));
-    }
-
-    /**
-     * Returns the ISO country code equivalent of the current registered
-     * operator's MCC (Mobile Country Code) of a subscription.
      * <p>
-     * Availability: Only when user is registered to a network. Result may be
-     * unreliable on CDMA networks (use {@link #getPhoneType()} to determine if
-     * on a CDMA network).
      *
-     * @param phoneId for which Network CountryIso is returned
+     * @param slotIndex the SIM slot index to get network country ISO.
+     *
+     * @return the lowercase 2 character ISO-3166 country code, or empty string if not available.
+     *
+     * {@hide}
      */
-    /** {@hide} */
-    @UnsupportedAppUsage
-    public String getNetworkCountryIsoForPhone(int phoneId) {
+    @SystemApi
+    @TestApi
+    @NonNull
+    public String getNetworkCountryIso(int slotIndex) {
         try {
             ITelephony telephony = getITelephony();
             if (telephony == null) return "";
-            return telephony.getNetworkCountryIsoForPhone(phoneId);
+            return telephony.getNetworkCountryIsoForPhone(slotIndex);
         } catch (RemoteException ex) {
             return "";
         }