Add link to more app settings

Test: MoreSettingsPreferenceControllerTest
Test: test app that can handle the settings intent
Bug: 236932102
Change-Id: Iae778c93057e47aa0f664d3faab21640b2cd5193

src/com/android/settings/applications/specialaccess/notificationaccess/MoreSettingsPreferenceController.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.applications.specialaccess.notificationaccess;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.service.notification.NotificationListenerService;
+
+import androidx.preference.Preference;
+
+import com.android.settings.core.BasePreferenceController;
+
+import java.util.List;
+
+/**
+ * Controls link to reach more preference settings inside the app.
+ */
+public class MoreSettingsPreferenceController extends BasePreferenceController {
+
+    private static final String TAG = "MoreSettingsPrefContr";
+    private static final String KEY_MORE_SETTINGS = "more_settings";
+
+    PackageManager mPm;
+    String mPackage;
+    int mUserId;
+    Intent mIntent = new Intent(Intent.ACTION_MAIN)
+            .addCategory(NotificationListenerService.INTENT_CATEGORY_SETTINGS_HOME);
+
+    public MoreSettingsPreferenceController(Context context) {
+        super(context, KEY_MORE_SETTINGS);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        final List<ResolveInfo> resolveInfos = mPm.queryIntentActivities(
+                mIntent,
+                PackageManager.ResolveInfoFlags.of(0));
+        if (resolveInfos == null || resolveInfos.isEmpty()) {
+            return CONDITIONALLY_UNAVAILABLE;
+        }
+        return AVAILABLE;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_MORE_SETTINGS;
+    }
+
+    public MoreSettingsPreferenceController setPackageManager(PackageManager pm) {
+        mPm = pm;
+        return this;
+    }
+
+    public MoreSettingsPreferenceController setPackage(String pkg) {
+        mPackage = pkg;
+        mIntent.setPackage(mPackage);
+        return this;
+    }
+
+    public void updateState(Preference preference) {
+        preference.setIntent(mIntent);
+    }
+}

src/com/android/settings/applications/specialaccess/notificationaccess/NotificationAccessDetails.java

@@ -124,6 +124,9 @@ public class NotificationAccessDetails extends DashboardFragment {
                 .setCn(mComponentName)
                 .setUserId(mUserId)
                 .setTargetSdk(listenerTargetSdk);
+        use(MoreSettingsPreferenceController.class)
+                .setPackage(mComponentName.getPackageName())
+                .setPackageManager(mPm);
         final int finalListenerTargetSdk = listenerTargetSdk;
         getPreferenceControllers().forEach(controllers -> {
             controllers.forEach(controller -> {