Settings: Make NetworkScanHelper max search time customizable

Default max search time (300) fails on some devices.

Test: Network scan works on OnePlus 9 after overlaying
      max network scan search time to 254.
Change-Id: Ia0038fac6d2000748e0aa08fd6a53f11876728d7

res/values/config.xml

@@ -557,4 +557,7 @@
 
     <!-- Whether to aggregate for network selection list-->
     <bool name="config_network_selection_list_aggregation_enabled">false</bool>
+
+    <!-- Max network scan search time in seconds -->
+    <integer name="config_network_scan_helper_max_search_time_sec">300</integer>
 </resources>

src/com/android/settings/network/telephony/NetworkScanHelper.java

@@ -17,6 +17,7 @@
 package com.android.settings.network.telephony;
 
 import android.annotation.IntDef;
+import android.content.Context;
 import android.telephony.AccessNetworkConstants.AccessNetworkType;
 import android.telephony.CellInfo;
 import android.telephony.NetworkScan;
@@ -31,6 +32,8 @@ import androidx.annotation.VisibleForTesting;
 
 import com.android.internal.telephony.CellNetworkScanResult;
 
+import com.android.settings.R;
+
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
@@ -129,6 +132,7 @@ public class NetworkScanHelper {
     private final TelephonyScanManager.NetworkScanCallback mInternalNetworkScanCallback;
     private final Executor mExecutor;
 
+    private int mMaxSearchTimeSec = MAX_SEARCH_TIME_SEC;
     private NetworkScan mNetworkScanRequester;
 
     /** Callbacks for sync network scan */
@@ -141,6 +145,13 @@ public class NetworkScanHelper {
         mExecutor = executor;
     }
 
+    public NetworkScanHelper(Context context, TelephonyManager tm, NetworkScanCallback callback,
+            Executor executor) {
+        this(tm, callback, executor);
+        mMaxSearchTimeSec = context.getResources().getInteger(
+                R.integer.config_network_scan_helper_max_search_time_sec);
+    }
+
     @VisibleForTesting
     NetworkScanRequest createNetworkScanForPreferredAccessNetworks() {
         long networkTypeBitmap3gpp = mTelephonyManager.getPreferredNetworkTypeBitmask()
@@ -183,7 +194,7 @@ public class NetworkScanHelper {
                 radioAccessSpecifiers.toArray(
                         new RadioAccessSpecifier[radioAccessSpecifiers.size()]),
                 SEARCH_PERIODICITY_SEC,
-                MAX_SEARCH_TIME_SEC,
+                mMaxSearchTimeSec,
                 INCREMENTAL_RESULTS,
                 INCREMENTAL_RESULTS_PERIODICITY_SEC,
                 null /* List of PLMN ids (MCC-MNC) */);

src/com/android/settings/network/telephony/NetworkSelectSettings.java

@@ -112,7 +112,7 @@ public class NetworkSelectSettings extends DashboardFragment {
         mTelephonyManager = getContext().getSystemService(TelephonyManager.class)
                 .createForSubscriptionId(mSubId);
         mNetworkScanHelper = new NetworkScanHelper(
-                mTelephonyManager, mCallback, mNetworkScanExecutor);
+                getContext(), mTelephonyManager, mCallback, mNetworkScanExecutor);
         PersistableBundle bundle = ((CarrierConfigManager) getContext().getSystemService(
                 Context.CARRIER_CONFIG_SERVICE)).getConfigForSubId(mSubId);
         if (bundle != null) {