[Wi-Fi NetworkRequest] Set theme for the NetworkRequest dialog

We should set the same theme which applied in Settings APP to the NetworkRequestDialog

Bug: 139294487
Test: check if the right theme is applied when launching this activity.
Change-Id: Iefdfd5b810f5cf22c220830e1ee965113a439a3e
Merged-In: Iefdfd5b810f5cf22c220830e1ee965113a439a3e
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 13bea74..325fc8d 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2707,7 +2707,7 @@
 
         <activity
             android:name=".wifi.NetworkRequestDialogActivity"
-            android:theme="@style/Transparent"
+            android:theme="@style/Theme.AlertDialog"
             android:excludeFromRecents="true"
             android:launchMode="singleTop"
             android:taskAffinity=".wifi.NetworkRequestDialogActivity"
diff --git a/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java b/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java
index 107da79..4c7d02d 100644
--- a/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java
+++ b/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java
@@ -26,6 +26,7 @@
 import com.android.settingslib.wifi.WifiTracker;
 import com.android.settingslib.wifi.WifiTrackerFactory;
 
+import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.Robolectric;
@@ -36,15 +37,18 @@
 @Config(shadows = ShadowAlertDialogCompat.class)
 public class NetworkRequestDialogActivityTest {
 
-    @Test
-    public void LaunchActivity_shouldShowNetworkRequestDialog() {
+    @Before
+    public void setUp() {
         // Mocks fake WifiTracker, in case of exception in NetworkRequestDialogFragment.onResume().
         WifiTracker wifiTracker = mock(WifiTracker.class);
         WifiTrackerFactory.setTestingWifiTracker(wifiTracker);
+    }
 
+    @Test
+    public void launchActivity_shouldShowNetworkRequestDialog() {
         Robolectric.setupActivity(NetworkRequestDialogActivity.class);
 
-        AlertDialog alertDialog = ShadowAlertDialogCompat.getLatestAlertDialog();
+        final AlertDialog alertDialog = ShadowAlertDialogCompat.getLatestAlertDialog();
 
         assertThat(alertDialog.isShowing()).isTrue();
     }