From 485d94a7ef3c4703f03e95c35082c52297ac9402 Mon Sep 17 00:00:00 2001
From: Phil Weaver <pweaver@google.com>
Date: Wed, 12 Jul 2017 14:07:07 -0700
Subject: [PATCH] Back-port ag/2491664

Bug: 62196835
Test: Verify overlays disappear on a11y capabilities
dialog.

Change-Id: Ic675012dd9faa8e53d1d4b126b3ba68fecdab992
---
 AndroidManifest.xml                                       | 1 +
 .../ToggleAccessibilityServicePreferenceFragment.java     | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index f0b327167fe..37c2f7f350f 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -69,6 +69,7 @@
     <uses-permission android:name="android.permission.MANAGE_DEVICE_ADMINS" />
     <uses-permission android:name="android.permission.READ_SEARCH_INDEXABLES" />
     <uses-permission android:name="android.permission.OEM_UNLOCK_STATE" />
+    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS" />
 
     <application android:label="@string/settings_label"
             android:icon="@mipmap/ic_launcher_settings"
diff --git a/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java b/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
index 08fba67190a..1b034e623ad 100644
--- a/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleAccessibilityServicePreferenceFragment.java
@@ -33,6 +33,8 @@ import android.provider.Settings;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
 import android.view.accessibility.AccessibilityManager;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
@@ -49,6 +51,8 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 public class ToggleAccessibilityServicePreferenceFragment
         extends ToggleFeaturePreferenceFragment implements DialogInterface.OnClickListener {
 
@@ -184,6 +188,10 @@ public class ToggleAccessibilityServicePreferenceFragment
                         .create();
                 ad.create();
                 ad.getButton(AlertDialog.BUTTON_POSITIVE).setFilterTouchesWhenObscured(true);
+                Window window = ad.getWindow();
+                WindowManager.LayoutParams params = window.getAttributes();
+                params.privateFlags |= PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+                window.setAttributes(params);
                 return ad;
             }
             case DIALOG_ID_DISABLE_WARNING: {