react-native+0.72.4+004+ModalKeyboardFlashing.patch

diff --git a/node_modules/react-native/React/Views/RCTModalHostViewManager.m b/node_modules/react-native/React/Views/RCTModalHostViewManager.m
index 4b9f9ad..b72984c 100644
--- a/node_modules/react-native/React/Views/RCTModalHostViewManager.m
+++ b/node_modules/react-native/React/Views/RCTModalHostViewManager.m
@@ -79,6 +79,13 @@ RCT_EXPORT_MODULE()
     if (self->_presentationBlock) {
       self->_presentationBlock([modalHostView reactViewController], viewController, animated, completionBlock);
     } else {
+      // In our App, If an input is blurred and a modal is opened, the rootView will become the firstResponder, which
+      // will cause system to retain a wrong keyboard state, and then the keyboard to flicker when the modal is closed.
+      // We first resign the rootView to avoid this problem.
+      UIWindow *window = RCTKeyWindow();
+      if (window && window.rootViewController && [window.rootViewController.view isFirstResponder]) {
+        [window.rootViewController.view resignFirstResponder];
+      }
       [[modalHostView reactViewController] presentViewController:viewController
                                                         animated:animated
                                                       completion:completionBlock];