Update code to use location aware isEmergencyNumber.

Bug: 5247602
Change-Id: Ieeda4a17464795b3591db754bc991759609f88c2

telephony/java/android/telephony/PhoneNumberUtils.java

@@ -24,6 +24,7 @@ import com.android.i18n.phonenumbers.Phonenumber.PhoneNumber;
 import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
+import android.location.CountryDetector;
 import android.net.Uri;
 import android.os.SystemProperties;
 import android.provider.Contacts;
@@ -1572,6 +1573,32 @@ public class PhoneNumberUtils
       return isEmergencyNumber(number);
     }
 
+    /**
+     * Checks if a given number is an emergency number for the country that the user is in. The
+     * current country is determined using the CountryDetector.
+     *
+     * @param number the number to look up.
+     * @param context the specific context which the number should be checked against
+     * @return if a phone number is an emergency number for a local country, based on the
+     * CountryDetector.
+     * @see android.location.CountryDetector
+     * @hide
+     */
+    public static boolean isLocalEmergencyNumber(String number, Context context) {
+        String countryIso;
+        CountryDetector detector = (CountryDetector) context.getSystemService(
+                Context.COUNTRY_DETECTOR);
+        if (detector != null) {
+            countryIso = detector.detectCountry().getCountryIso();
+        } else {
+            Locale locale = context.getResources().getConfiguration().locale;
+            countryIso = locale.getCountry();
+            Log.w(LOG_TAG, "No CountryDetector; falling back to countryIso based on locale: "
+                    + countryIso);
+        }
+        return isEmergencyNumber(number, countryIso);
+    }
+
     /**
      * isVoiceMailNumber: checks a given number against the voicemail
      *   number provided by the RIL and SIM card. The caller must have

telephony/java/com/android/internal/telephony/CallerInfo.java

@@ -254,9 +254,7 @@ public class CallerInfo {
         // Change the callerInfo number ONLY if it is an emergency number
         // or if it is the voicemail number.  If it is either, take a
         // shortcut and skip the query.
-        Locale locale = context.getResources().getConfiguration().locale;
-        String countryIso = getCurrentCountryIso(context, locale);
-        if (PhoneNumberUtils.isEmergencyNumber(number, countryIso)) {
+        if (PhoneNumberUtils.isLocalEmergencyNumber(number, context)) {
             return new CallerInfo().markAsEmergency(context);
         } else if (PhoneNumberUtils.isVoiceMailNumber(number)) {
             return new CallerInfo().markAsVoiceMail();

telephony/java/com/android/internal/telephony/CallerInfoAsyncQuery.java

@@ -403,9 +403,7 @@ public class CallerInfoAsyncQuery {
         cw.number = number;
 
         // check to see if these are recognized numbers, and use shortcuts if we can.
-        CountryDetector detector = (CountryDetector) context.getSystemService(
-            Context.COUNTRY_DETECTOR);
-        if (PhoneNumberUtils.isEmergencyNumber(number, detector.detectCountry().getCountryIso())) {
+        if (PhoneNumberUtils.isLocalEmergencyNumber(number, context)) {
             cw.event = EVENT_EMERGENCY_NUMBER;
         } else if (PhoneNumberUtils.isVoiceMailNumber(number)) {
             cw.event = EVENT_VOICEMAIL_NUMBER;

telephony/java/com/android/internal/telephony/cdma/CdmaCallTracker.java

@@ -190,7 +190,8 @@ public final class CdmaCallTracker extends CallTracker {
 
         String inEcm=SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE, "false");
         boolean isPhoneInEcmMode = inEcm.equals("true");
-        boolean isEmergencyCall = PhoneNumberUtils.isEmergencyNumber(dialString);
+        boolean isEmergencyCall =
+                PhoneNumberUtils.isLocalEmergencyNumber(dialString, phone.getContext());
 
         // Cancel Ecm timer if a second emergency call is originating in Ecm mode
         if (isPhoneInEcmMode && isEmergencyCall) {
@@ -1059,7 +1060,7 @@ public final class CdmaCallTracker extends CallTracker {
      * Disable data call when emergency call is connected
      */
     private void disableDataCallInEmergencyCall(String dialString) {
-        if (PhoneNumberUtils.isEmergencyNumber(dialString)) {
+        if (PhoneNumberUtils.isLocalEmergencyNumber(dialString, phone.getContext())) {
             if (Phone.DEBUG_PHONE) log("disableDataCallInEmergencyCall");
             mIsInEmergencyCall = true;
             phone.mDataConnectionTracker.setInternalDataEnabled(false);

telephony/java/com/android/internal/telephony/gsm/GsmMmiCode.java

@@ -496,7 +496,7 @@ public final class GsmMmiCode extends Handler implements MmiCode {
             return false;
         }
 
-        if (PhoneNumberUtils.isEmergencyNumber(dialString)) {
+        if (PhoneNumberUtils.isLocalEmergencyNumber(dialString, phone.getContext())) {
             return false;
         } else {
             return isShortCodeUSSD(dialString, phone);