1 files changed, 20 insertions, 0 deletions
diff --git a/src/plugins/platforms/ios/qiosmessagedialog.mm b/src/plugins/platforms/ios/qiosmessagedialog.mm
index 254922701a..773b034e2a 100644
--- a/src/plugins/platforms/ios/qiosmessagedialog.mm
+++ b/src/plugins/platforms/ios/qiosmessagedialog.mm
@@ -47,6 +47,7 @@
 
 #include "qiosglobal.h"
 #include "quiview.h"
+#include "qiosscreen.h"
 #include "qiosmessagedialog.h"
 
 QIOSMessageDialog::QIOSMessageDialog()
@@ -147,6 +148,25 @@ bool QIOSMessageDialog::show(Qt::WindowFlags windowFlags, Qt::WindowModality win
     }
 
     UIWindow *window = parent ? reinterpret_cast<UIView *>(parent->winId()).window : qt_apple_sharedApplication().keyWindow;
+    if (!window) {
+        qCDebug(lcQpaWindow, "Attempting to exec a dialog without any window/widget visible.");
+
+        auto *primaryScreen = static_cast<QIOSScreen*>(QGuiApplication::primaryScreen()->handle());
+        Q_ASSERT(primaryScreen);
+
+        window = primaryScreen->uiWindow();
+        if (window.hidden) {
+            // With a window hidden, an attempt to present view controller
+            // below fails with a warning, that a view "is not a part of
+            // any view hierarchy". The UIWindow is initially hidden,
+            // as unhiding it is what hides the splash screen.
+            window.hidden = NO;
+        }
+    }
+
+    if (!window)
+        return false;
+
     [window.rootViewController presentViewController:m_alertController animated:YES completion:nil];
     return true;
 }