Add new method "checkRestrictionEnforced" to

RestrictedPreferenceHelper.

- Return the EnforcedAdmin object if the preference is retricted.

Bug: 179245126
Test: robotest and see the UI
Change-Id: I0687bb5e1bafa6c50f7c4e1400e6d4ed7c03c9b1

packages/SettingsLib/MainSwitchPreference/res/layout-v31/settingslib_main_switch_bar.xml

@@ -48,7 +48,6 @@
             android:layout_width="@dimen/settingslib_restricted_icon_size"
             android:layout_height="@dimen/settingslib_restricted_icon_size"
             android:tint="?android:attr/colorAccent"
-            android:theme="@android:style/Theme.Material"
             android:layout_gravity="center_vertical"
             android:layout_marginEnd="@dimen/settingslib_restricted_icon_margin_end"
             android:src="@*android:drawable/ic_info"

packages/SettingsLib/src/com/android/settingslib/RestrictedPreferenceHelper.java

@@ -138,6 +138,17 @@ public class RestrictedPreferenceHelper {
         setDisabledByAdmin(admin);
     }
 
+    /**
+     * @return EnforcedAdmin if we have been passed the restriction in the xml.
+     */
+    public EnforcedAdmin checkRestrictionEnforced() {
+        if (mAttrUserRestriction == null) {
+            return null;
+        }
+        return RestrictedLockUtilsInternal.checkIfRestrictionEnforced(mContext,
+                mAttrUserRestriction, UserHandle.myUserId());
+    }
+
     /**
      * Disable this preference based on the enforce admin.
      *