1 files changed, 13 insertions, 0 deletions
diff --git a/src/plugins/platforms/ios/qiosscreen.mm b/src/plugins/platforms/ios/qiosscreen.mm
index b0e60d76fc..4dbb0a4cdf 100644
--- a/src/plugins/platforms/ios/qiosscreen.mm
+++ b/src/plugins/platforms/ios/qiosscreen.mm
@@ -45,6 +45,7 @@
 #include "qiosapplicationdelegate.h"
 #include "qiosviewcontroller.h"
 #include "quiview.h"
+#include "qiostheme.h"
 
 #include <QtCore/private/qcore_mac_p.h>
 
@@ -208,6 +209,18 @@ static QIOSScreen* qtPlatformScreenFor(UIScreen *uiScreen)
     [super sendEvent:event];
 }
 
+- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection
+{
+    [super traitCollectionDidChange:previousTraitCollection];
+
+    if (self.screen == UIScreen.mainScreen) {
+        if (previousTraitCollection.userInterfaceStyle != self.traitCollection.userInterfaceStyle) {
+            QIOSTheme::initializeSystemPalette();
+            QWindowSystemInterface::handleThemeChange<QWindowSystemInterface::SynchronousDelivery>(nullptr);
+        }
+    }
+}
+
 @end
 
 // -------------------------------------------------------------------------