From 885403133f3fdb72fab12adf2279931944d4b5e8 Mon Sep 17 00:00:00 2001
From: Bernardo Rufino <brufino@google.com>
Date: Mon, 25 Nov 2019 19:40:53 +0000
Subject: [PATCH] Add activity for MANAGE_APP_OVERLAY_PERMISSION intent in
 Settings

In order to support system use-cases, such as when the user wants do
revoke SYSTEM_ALERT_WINDOW (SAW) permission via notification, we are
introducing a new intent, MANAGE_APP_OVERLAY_PERMISSION (notice the
"APP_"), that directs the user to the app-specific screen to toggle SAW
permission.

This activity can only be started if the caller has
INTERNAL_SYSTEM_WINDOW permission, which sysui and the system have.

Test: atest TestManageOverlayPermissionIntents
      (cts in one of the topic CLs)
Test: Let an app draw on top of other apps, via its notification go to
      settings, verify that the screen for controlling such capability
      for the app is dispayed.
Bug: 135920175

Change-Id: I2f7e02a1242af7a22098359aeb230888fb8d4f3a
---
 AndroidManifest.xml                    | 13 +++++++++++++
 src/com/android/settings/Settings.java |  1 +
 2 files changed, 14 insertions(+)

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index c2dcd158d12..ed0062a47b8 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2721,6 +2721,19 @@
                 android:value="com.android.settings.applications.manageapplications.ManageApplications" />
         </activity>
 
+        <activity
+            android:name="Settings$AppDrawOverlaySettingsActivity"
+            android:label="@string/draw_overlay"
+            android:permission="android.permission.INTERNAL_SYSTEM_WINDOW">
+            <intent-filter android:priority="1">
+                <action android:name="android.settings.MANAGE_APP_OVERLAY_PERMISSION" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:scheme="package" />
+            </intent-filter>
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.applications.appinfo.DrawOverlayDetails" />
+        </activity>
+
         <activity
             android:name="Settings$WriteSettingsActivity"
             android:label="@string/write_settings_title">
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index f910fae11fd..c6b7e62077a 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -138,6 +138,7 @@ public class Settings extends SettingsActivity {
     public static class OverlaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class WriteSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ChangeWifiStateActivity extends SettingsActivity { /* empty */ }
+    public static class AppDrawOverlaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class AppWriteSettingsActivity extends SettingsActivity { /* empty */ }
 
     public static class ManageExternalSourcesActivity extends SettingsActivity {/* empty */ }