Add subtitle to settings (settings)

Allows a credential provider to show a
subtitle/summary underneath the title in
the list of providers.

Test: ondevice & atest
Bug: 253157366
Change-Id: I481da16985027a49ee464623b6db166d941cab55
(cherry picked from commit on googleplex-android-review.googlesource.com host: 6474e01372)
Merged-In: I481da16985027a49ee464623b6db166d941cab55

src/com/android/settings/applications/credentials/CredentialManagerPreferenceController.java

@@ -207,7 +207,7 @@ public class CredentialManagerPreferenceController extends BasePreferenceControl
             }
 
             // Build the pref and add it to the output & group.
-            SwitchPreference pref = addProviderPreference(context, title, icon, packageName);
+            SwitchPreference pref = addProviderPreference(context, title, icon, packageName, firstInfo.getSettingsSubtitle());
             output.put(packageName, pref);
             group.addPreference(pref);
         }
@@ -223,7 +223,8 @@ public class CredentialManagerPreferenceController extends BasePreferenceControl
                 context,
                 label == null ? "" : label,
                 service.getServiceIcon(mContext),
-                service.getServiceInfo().packageName);
+                service.getServiceInfo().packageName,
+                service.getSettingsSubtitle());
     }
 
     /**
@@ -281,7 +282,8 @@ public class CredentialManagerPreferenceController extends BasePreferenceControl
             @NonNull Context prefContext,
             @NonNull CharSequence title,
             @Nullable Drawable icon,
-            @NonNull String packageName) {
+            @NonNull String packageName,
+            @Nullable CharSequence subtitle) {
         final SwitchPreference pref = new SwitchPreference(prefContext);
         pref.setTitle(title);
         pref.setChecked(mEnabledPackageNames.contains(packageName));
@@ -290,6 +292,10 @@ public class CredentialManagerPreferenceController extends BasePreferenceControl
             pref.setIcon(Utils.getSafeIcon(icon));
         }
 
+        if (subtitle != null) {
+            pref.setSummary(subtitle);
+        }
+
         pref.setOnPreferenceClickListener(
                 p -> {
                     boolean isChecked = pref.isChecked();