Check for presence of carrier app in data notification.

When ConnectivityService checks the mobile data connection and notices that
there is no connectivity, first do a check to see if a valid carrier app for
the current MCC/MNC exists. If so, launch that app instead of checking for a
provisioning URL or hoping for a DNS redirect in the browser. If no such app
exists, continue on as normal.

Bug: 9622645
Change-Id: Ic88b06250af89825d8eee7e4945fb8d7c28d16e1

services/java/com/android/server/ConnectivityService.java

@@ -111,6 +111,7 @@ import com.android.internal.net.VpnProfile;
 import com.android.internal.telephony.DctConstants;
 import com.android.internal.telephony.Phone;
 import com.android.internal.telephony.PhoneConstants;
+import com.android.internal.telephony.TelephonyIntents;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.internal.util.XmlUtils;
 import com.android.server.am.BatteryStatsService;
@@ -4434,6 +4435,17 @@ public class ConnectivityService extends IConnectivityManager.Stub {
             mdst.enableMobileProvisioning(url);
         } else {
             if (DBG) log("handleMobileProvisioningAction: on default network");
+            // Check for  apps that can handle provisioning first
+            Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP);
+            provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX
+                    + mTelephonyManager.getSimOperator());
+            if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */)
+                    != null) {
+                provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
+                        Intent.FLAG_ACTIVITY_NEW_TASK);
+                mContext.startActivity(provisioningIntent);
+            } else {
+                // If no apps exist, use standard URL ACTION_VIEW method
                 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN,
                         Intent.CATEGORY_APP_BROWSER);
                 newIntent.setData(Uri.parse(url));
@@ -4446,6 +4458,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
                 }
             }
         }
+    }
 
     private static final String NOTIFICATION_ID = "CaptivePortal.Notification";
     private volatile boolean mIsNotificationVisible = false;