Hide notification channel slice that is interacted

- Ignore interacted package in ContextualNotificationChannelSlice.
- Regularly clear package record with background worker.

Bug:129726858
Test: visual, robotests

Change-Id: I94661a53bcbbe4a15479224c33cfb2eff345aa67

src/com/android/settings/homepage/contextualcards/slices/ContextualNotificationChannelSlice.java

@@ -16,14 +16,23 @@
 
 package com.android.settings.homepage.contextualcards.slices;
 
+import static android.content.Context.MODE_PRIVATE;
+
 import android.content.Context;
 import android.net.Uri;
+import android.util.ArraySet;
 
 import com.android.settings.R;
 import com.android.settings.slices.CustomSliceRegistry;
+import com.android.settings.slices.SliceBackgroundWorker;
+
+import java.util.Set;
 
 public class ContextualNotificationChannelSlice extends NotificationChannelSlice {
 
+    public static final String PREFS = "notification_channel_slice_prefs";
+    public static final String PREF_KEY_INTERACTED_PACKAGES = "interacted_packages";
+
     public ContextualNotificationChannelSlice(Context context) {
         super(context);
     }
@@ -37,4 +46,18 @@ public class ContextualNotificationChannelSlice extends NotificationChannelSlice
     protected CharSequence getSubTitle(String packageName, int uid) {
         return mContext.getText(R.string.recently_installed_app);
     }
+
+    @Override
+    protected boolean isUserInteracted(String packageName) {
+        // Check the package has been interacted on current slice or not.
+        final Set<String> interactedPackages =
+                mContext.getSharedPreferences(PREFS, MODE_PRIVATE)
+                        .getStringSet(PREF_KEY_INTERACTED_PACKAGES, new ArraySet<>());
+        return interactedPackages.contains(packageName);
+    }
+
+    @Override
+    public Class<? extends SliceBackgroundWorker> getBackgroundWorkerClass() {
+        return NotificationChannelWorker.class;
+    }
 }

src/com/android/settings/homepage/contextualcards/slices/NotificationChannelSlice.java

@@ -218,6 +218,17 @@ public class NotificationChannelSlice implements CustomSliceable {
                 .toIntent();
     }
 
+    /**
+     * Check the package has been interacted by user or not.
+     * Will use to filter package in {@link #getRecentlyInstalledPackages()}.
+     *
+     * @param packageName The app package name.
+     * @return true if the package was interacted, false otherwise.
+     */
+    protected boolean isUserInteracted(String packageName) {
+        return false;
+    }
+
     @VisibleForTesting
     IconCompat getApplicationIcon(String packageName) {
         final Drawable drawable;
@@ -328,8 +339,9 @@ public class NotificationChannelSlice implements CustomSliceable {
         final List<PackageInfo> installedPackages =
                 mContext.getPackageManager().getInstalledPackages(0);
         for (PackageInfo packageInfo : installedPackages) {
-            // Not include system app.
-            if (packageInfo.applicationInfo.isSystemApp()) {
+            // Not include system app and interacted app.
+            if (packageInfo.applicationInfo.isSystemApp()
+                    || isUserInteracted(packageInfo.packageName)) {
                 continue;
             }
 

src/com/android/settings/homepage/contextualcards/slices/NotificationChannelWorker.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2019 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.homepage.contextualcards.slices;
+
+import static android.content.Context.MODE_PRIVATE;
+
+import static com.android.settings.homepage.contextualcards.slices.ContextualNotificationChannelSlice.PREFS;
+import static com.android.settings.homepage.contextualcards.slices.ContextualNotificationChannelSlice.PREF_KEY_INTERACTED_PACKAGES;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.pm.PackageInfo;
+import android.net.Uri;
+import android.util.ArraySet;
+
+import com.android.settings.slices.SliceBackgroundWorker;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class NotificationChannelWorker extends SliceBackgroundWorker<Void> {
+
+    public NotificationChannelWorker(Context context, Uri uri) {
+        super(context, uri);
+    }
+
+    @Override
+    protected void onSlicePinned() {
+    }
+
+    @Override
+    protected void onSliceUnpinned() {
+        removeUninstalledPackages();
+    }
+
+    @Override
+    public void close() throws IOException {
+    }
+
+    private void removeUninstalledPackages() {
+        final SharedPreferences prefs = getContext().getSharedPreferences(PREFS, MODE_PRIVATE);
+        final Set<String> interactedPackages =
+                prefs.getStringSet(PREF_KEY_INTERACTED_PACKAGES, new ArraySet());
+        if (interactedPackages.isEmpty()) {
+            return;
+        }
+
+        final List<PackageInfo> installedPackageInfos =
+                getContext().getPackageManager().getInstalledPackages(0);
+        final List<String> installedPackages = installedPackageInfos.stream()
+                .map(packageInfo -> packageInfo.packageName)
+                .collect(Collectors.toList());
+        final Set<String> newInteractedPackages = new ArraySet<>();
+        for (String packageName : interactedPackages) {
+            if (installedPackages.contains(packageName)) {
+                newInteractedPackages.add(packageName);
+            }
+        }
+        prefs.edit().putStringSet(PREF_KEY_INTERACTED_PACKAGES, newInteractedPackages).apply();
+    }
+}