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lib/13/01____/pages/page_a.dart

@@ -0,0 +1,30 @@
+import 'package:flutter/material.dart';
+import '../main.dart';
+
+class PageA extends StatelessWidget {
+  const PageA({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffCCFFFF);
+
+    return Scaffold(
+        backgroundColor: bgColor,
+        appBar: AppBar(
+          title: const Text('A 界面'),
+          backgroundColor: bgColor,
+        ),
+        body: Center(
+          child: ElevatedButton(
+            onPressed: () => toPageB(context),
+            child: const Text('Push B'),
+          ),
+        ));
+  }
+
+  void toPageB(BuildContext context) {
+    // router.value = ['/', 'a', 'b'];
+    router.go('/a/b');
+  }
+
+}