Disable launcher icon for S.

Bug: 175598952
Test: Preload RRO with "is_launcher_enabled:true" on S, flash all
      device, boot to verify if DocumentsUI launcher icon hidden.
Change-Id: I8562fd5eb0dec40e10a892c6320c88fb85bae9a2

2 files changed, 30 insertions, 3 deletions

diff --git a/res/values-v31/config.xml b/res/values-v31/config.xml
new file mode 100644
index 000000000..a96a3e999
--- /dev/null
+++ b/res/values-v31/config.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+
+<resources>
+    <!-- Starting from Android S, using DocumentsUI as a file browser with launcher icon is no
+    longer supported. -->
+    <bool name="is_launcher_enabled">false</bool>
+</resources>
diff --git a/src/com/android/documentsui/PreBootReceiver.java b/src/com/android/documentsui/PreBootReceiver.java
index c47631654..f5ad9395a 100644
--- a/src/com/android/documentsui/PreBootReceiver.java
+++ b/src/com/android/documentsui/PreBootReceiver.java
@@ -30,6 +30,7 @@ import android.content.res.Resources;
 import android.util.Log;
 
 import com.android.documentsui.theme.ThemeOverlayManager;
+import com.android.documentsui.util.VersionUtils;
 
 /**
  * A receiver listening action.PRE_BOOT_COMPLETED event for setting component enable or disable.
@@ -91,11 +92,15 @@ public class PreBootReceiver extends BroadcastReceiver {
         int resId = overlayRes.getIdentifier(config, "bool", overlayPkg);
         if (resId != 0) {
             final ComponentName component = new ComponentName(packageName, className);
-            final boolean value = overlayRes.getBoolean(resId);
+            boolean enabled = overlayRes.getBoolean(resId);
+            if (VersionUtils.isAtLeastS() && CONFIG_IS_LAUNCHER_ENABLED.equals(config)) {
+                enabled = false; // Do not allow LauncherActivity to be enabled for S+.
+            }
             if (DEBUG) {
-                Log.i(TAG, "Overlay package:" + overlayPkg + ", customize " + config + ":" + value);
+                Log.i(TAG,
+                        "Overlay package:" + overlayPkg + ", customize " + config + ":" + enabled);
             }
-            pm.setComponentEnabledSetting(component, value
+            pm.setComponentEnabledSetting(component, enabled
                             ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
                             : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                     PackageManager.DONT_KILL_APP);