我正在使用 React Native 和 React Navigation。我试图只将其中一个屏幕设为 mode="Modal ，但导航时传递的路由参数显示“未定义”，错误为 TypeError: undefined is not an object (evaluating 'route.params.title') 。这是为什么？我该如何修复？

我的尝试

const ModalScreen = () => (
  <Modals.Navigator mode="modal">
    <Modals.Screen
      name="Modal"
      component={Modal}
      options={({ route }) => ({
        title: route.params.title,
        headerTransparent: true,
        gestureResponseDistance: {
          vertical: 500,
        },
      })}
    />
  </Modals.Navigator>
);
const MainScreen = () => (
  <Items.Navigator>
    <Items.Screen
      name="Main"
      component={Main}
      options={{ headerShown: false }}
    />
    <Items.Screen name="Modal" component={ModalScreen} />
  </Items.Navigator>
);

// Navigating to Modal in another file.
<TouchableOpacity
  onPress={() =>
    navigation.navigate("Modal", {
      screen: "Modal",
      title: title,
    })
  }
>