commit ceb2e28da4f29954fbf6b6c2f10678458ef4a288
author Arc Wang <arcwang@google.com> Thu Mar 11 12:10:18 2021 +0800
committer android-build-team Robot <android-build-team-robot@google.com> Mon Apr 12 23:38:43 2021 +0000
tree 9f92feb3d001a636572ef7ee984986ea844e2aeb
parent e5bbccb2ee49d2fa384907939d7af011adfc02a0

Hide non-system overlay window on ActivityPicker

To improve security.

Bug: 181962311
Test: manual
      Show an AlertDialog and observe if it will hide after below command.
      adb shell am start -a android.intent.action.PICK_ACTIVITY -n com.android.settings/.ActivityPicker
Change-Id: I6e2845cc19dc012cba2933318a067bbb8db90a23
(cherry picked from commit 3b4853e109a5d95656f73d31dace4099d5dfbca7)
(cherry picked from commit aef628646af22f01f80167f88980b69004cf2567)

src/com/android/settings/ActivityPicker.java

diff --git a/src/com/android/settings/ActivityPicker.java b/src/com/android/settings/ActivityPicker.java
index ae61944..f75ce37 100644
--- a/src/com/android/settings/ActivityPicker.java
+++ b/src/com/android/settings/ActivityPicker.java
@@ -16,6 +16,8 @@
 
 package com.android.settings;
 
+import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 import android.app.Activity;
 import android.content.Context;
 import android.content.DialogInterface;
@@ -71,6 +73,8 @@
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        getWindow().addPrivateFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
         
         final Intent intent = getIntent();