初版

App.tsx

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+import * as React from "react";
+import { NavigationContainer } from "@react-navigation/native";
+import { createNativeStackNavigator } from "@react-navigation/native-stack";
+
+import HomeScreen from "./src/HomeScreen";
+import ScanScreen from "./src/ScanScreen";
+import InfoScreen from "./src/InfoScreen";
+import DfuScreen from "./src/DfuScreen";
+import PrivacyScreen from "./src/PrivacyScreen";
+import SplashScreen from "./src/SplashScreen"; // ✅ 新增启动页
+
+export type RootStackParamList = {
+  Splash: undefined;
+  Home: undefined;
+  Scan: undefined;
+  Info: { peripheral: any };
+  Dfu: { deviceId: string; name: string; firmware: string };
+  Privacy: undefined;
+};
+
+const Stack = createNativeStackNavigator<RootStackParamList>();
+
+export default function App() {
+  return (
+    <NavigationContainer>
+      <Stack.Navigator
+        initialRouteName="Splash"
+        // ✅ 统一所有导航栏样式
+        screenOptions={{
+          headerStyle: { backgroundColor: "#E7141E" }, // 顶部背景红色
+          headerTintColor: "#fff", // 返回箭头和文字为白色
+          headerTitleStyle: { fontWeight: "bold", color: "#fff" }, // 标题白色+加粗
+        }}
+      >
+        {/* 启动页（无标题） */}
+        <Stack.Screen
+          name="Splash"
+          component={SplashScreen}
+          options={{ headerShown: false }}
+        />
+
+        {/* 首页(标题栏无文字) */}
+        <Stack.Screen
+          name="Home"
+          component={HomeScreen}
+          options={{ title: "" }}
+        />
+
+        {/* 其他页面默认显示标题栏 */}
+        <Stack.Screen
+          name="Scan"
+          component={ScanScreen}
+          options={{ title: "搜索设备" }}
+        />
+        <Stack.Screen
+          name="Info"
+          component={InfoScreen}
+          options={{ title: "设备信息" }}
+        />
+        <Stack.Screen
+          name="Dfu"
+          component={DfuScreen}
+          options={{ title: "固件升级" }}
+        />
+        <Stack.Screen
+          name="Privacy"
+          component={PrivacyScreen}
+          options={{ title: "隐私协议" }}
+        />
+      </Stack.Navigator>
+    </NavigationContainer>
+  );
+}