Add isSliceable API to BasePrefController

Only support explicitly approved Settings Slices,
dictated by controllers which return true for the new
method isSliceable.

Updating the supported settings to a whitelist means that
the method to return all available slices must be updated,
and checking slicability when we index slices.

Test: robotests
Bug: 79779103
Change-Id: Ib2b9690cdd0036b5cc4a1cb846c52bce7c824ab9

1 files changed, 6 insertions, 0 deletions

diff --git a/src/com/android/settings/notification/NotificationVolumePreferenceController.java b/src/com/android/settings/notification/NotificationVolumePreferenceController.java
index c3c8793cf2..5995462053 100644
--- a/src/com/android/settings/notification/NotificationVolumePreferenceController.java
+++ b/src/com/android/settings/notification/NotificationVolumePreferenceController.java
@@ -18,6 +18,7 @@ package com.android.settings.notification;
 
 import android.content.Context;
 import android.media.AudioManager;
+import android.text.TextUtils;
 
 import com.android.settings.R;
 import com.android.settings.Utils;
@@ -39,6 +40,11 @@ public class NotificationVolumePreferenceController extends
     }
 
     @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), KEY_NOTIFICATION_VOLUME);
+    }
+
+    @Override
     public String getPreferenceKey() {
         return KEY_NOTIFICATION_VOLUME;
     }