From f2d7a45b74e42a69070d08d65052b293af3ea4ef Mon Sep 17 00:00:00 2001
From: Mykola Baibuz <mykola.baibuz@gmail.com>
Date: Fri, 23 Sep 2022 21:50:25 +0300
Subject: [PATCH] Set security screen for Android app

This will guarantee that even apps running with root privileges are unable to directly capture information displayed by the app on the screen.
---
 client/ui/pages_logic/StartPageLogic.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/client/ui/pages_logic/StartPageLogic.cpp b/client/ui/pages_logic/StartPageLogic.cpp
index de3173b5..1e28d6cd 100644
--- a/client/ui/pages_logic/StartPageLogic.cpp
+++ b/client/ui/pages_logic/StartPageLogic.cpp
@@ -11,6 +11,7 @@
 #include <QStandardPaths>
 
 #ifdef Q_OS_ANDROID
+#include <QtAndroid>
 #include "platforms/android/android_controller.h"
 #endif
 
@@ -23,7 +24,16 @@ StartPageLogic::StartPageLogic(UiLogic *logic, QObject *parent):
     m_pushButtonBackFromStartVisible{true},
     m_ipAddressPortRegex{Utils::ipAddressPortRegExp()}
 {
-
+#ifdef Q_OS_ANDROID
+    // Set security screen for Android app
+    QtAndroid::runOnAndroidThread([]() {
+        QAndroidJniObject window = QtAndroid::androidActivity().callObjectMethod("getWindow", "()Landroid/view/Window;");
+        if (window.isValid()){
+            const int FLAG_SECURE = 8192;
+            window.callMethod<void>("addFlags", "(I)V", FLAG_SECURE);
+        }
+    });
+#endif
 }
 
 void StartPageLogic::onUpdatePage()