Create setting screen from Notification Assistant

Test: atest
Fixes: 120852765
Change-Id: I90b22daa67f73809697fd629dabec22ef991de54
diff --git a/api/current.txt b/api/current.txt
index 39b6cea..51807ee 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -38809,6 +38809,7 @@
     field public static final String ACTION_NFC_PAYMENT_SETTINGS = "android.settings.NFC_PAYMENT_SETTINGS";
     field public static final String ACTION_NFC_SETTINGS = "android.settings.NFC_SETTINGS";
     field public static final String ACTION_NIGHT_DISPLAY_SETTINGS = "android.settings.NIGHT_DISPLAY_SETTINGS";
+    field public static final String ACTION_NOTIFICATION_ASSISTANT_SETTINGS = "android.settings.NOTIFICATION_ASSISTANT_SETTINGS";
     field public static final String ACTION_NOTIFICATION_LISTENER_SETTINGS = "android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS";
     field public static final String ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS = "android.settings.NOTIFICATION_POLICY_ACCESS_SETTINGS";
     field public static final String ACTION_PRINT_SETTINGS = "android.settings.ACTION_PRINT_SETTINGS";
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index a465b32..912cd5b 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -1204,6 +1204,21 @@
     public static final String ACTION_DREAM_SETTINGS = "android.settings.DREAM_SETTINGS";
 
     /**
+     * Activity Action: Show Notification assistant settings.
+     * <p>
+     * In some cases, a matching Activity may not exist, so ensure you
+     * safeguard against this.
+     * <p>
+     * Input: Nothing.
+     * <p>
+     * Output: Nothing.
+     * @see android.service.notification.NotificationAssistantService
+     */
+    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String ACTION_NOTIFICATION_ASSISTANT_SETTINGS =
+            "android.settings.NOTIFICATION_ASSISTANT_SETTINGS";
+
+    /**
      * Activity Action: Show Notification listener settings.
      * <p>
      * In some cases, a matching Activity may not exist, so ensure you
diff --git a/core/proto/android/app/settings_enums.proto b/core/proto/android/app/settings_enums.proto
index 5497b86..f74fc21 100644
--- a/core/proto/android/app/settings_enums.proto
+++ b/core/proto/android/app/settings_enums.proto
@@ -1622,6 +1622,10 @@
     // OPEN: Settings > Apps > Default Apps > Default sms
     DEFAULT_SMS_PICKER = 789;
 
+    // OPEN: Settings > Apps > Notification > Notification Assistant
+    DEFAULT_NOTIFICATION_ASSISTANT = 790;
+
+
     // OPEN: Settings > Apps > Default Apps > Warning dialog to confirm selection
     DEFAULT_APP_PICKER_CONFIRMATION_DIALOG = 791;
 
diff --git a/proto/src/metrics_constants/metrics_constants.proto b/proto/src/metrics_constants/metrics_constants.proto
index d9adec8..7135700 100644
--- a/proto/src/metrics_constants/metrics_constants.proto
+++ b/proto/src/metrics_constants/metrics_constants.proto
@@ -3589,7 +3589,7 @@
     // OPEN: Settings > Apps > Default Apps > Default sms
     DEFAULT_SMS_PICKER = 789;
 
-    // OPEN: Settings > Apps > Default Apps > Default notification assistant
+    // OPEN: Settings > Apps > Notification > Notification Assistant
     DEFAULT_NOTIFICATION_ASSISTANT = 790;
 
     // OPEN: Settings > Apps > Default Apps > Warning dialog to confirm selection
diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 3557fcf..e8c402c 100644
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -594,8 +594,6 @@
             mConditionProviders.migrateToXml();
             handleSavePolicyFile();
         }
-
-        mAssistants.ensureAssistant();
     }
 
     private void loadPolicyFile() {
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
index cc62138..31788ae 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
@@ -99,7 +99,6 @@
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.provider.MediaStore;
-import android.provider.Settings.Secure;
 import android.service.notification.Adjustment;
 import android.service.notification.NotificationListenerService;
 import android.service.notification.NotificationStats;
@@ -2519,7 +2518,7 @@
         verify(mListeners, times(1)).migrateToXml();
         verify(mConditionProviders, times(1)).migrateToXml();
         verify(mAssistants, times(1)).migrateToXml();
-        verify(mAssistants, times(2)).ensureAssistant();
+        verify(mAssistants, never()).ensureAssistant();
     }
 
     @Test
@@ -2539,7 +2538,7 @@
         verify(mListeners, times(2)).migrateToXml();
         verify(mConditionProviders, times(2)).migrateToXml();
         verify(mAssistants, times(2)).migrateToXml();
-        verify(mAssistants, times(2)).ensureAssistant();
+        verify(mAssistants, never()).ensureAssistant();
     }
 
     @Test