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lib/08/02/pages/page_a.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'page_b.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'),
+        backgroundColor: bgColor,
+      ),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageB(context),
+          child: const Text('Push B'),
+        ),
+      ),
+    );
+  }
+
+  void toPageB(BuildContext context){
+    Navigator.of(context).pushNamed('/b');
+  }
+}

lib/08/02/pages/page_b.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+
+import 'page_c.dart';
+
+class PageB extends StatelessWidget {
+  const PageB({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffCCE5FF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(title: const Text('B',),
+        backgroundColor: bgColor,
+      ),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageC(context),
+          child: const Text('Push C'),
+        ),
+      ),
+    );
+  }
+
+  void toPageC(BuildContext context){
+    Navigator.of(context).pushNamed('/c');
+  }
+}

lib/08/02/pages/page_c.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+import 'page_d.dart';
+
+class PageC extends StatelessWidget {
+  const PageC({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffFFE6CD);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(
+        title: const Text('C'),
+        backgroundColor: bgColor,
+      ),
+      body:  Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageD(context),
+          child: const Text('Push D Remove Until A'),
+        ),
+      ),
+    );
+  }
+
+  void toPageD(BuildContext context){
+    Navigator.of(context).pushAndRemoveUntil(
+      MaterialPageRoute<void>(builder: (BuildContext context) => const PageD()),
+      ModalRoute.withName('/a'),
+    );
+  }
+}
+
+
+

lib/08/02/pages/page_d.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+import 'package:iroute/06/02/pages/page_a.dart';
+
+class PageD extends StatelessWidget {
+  const PageD({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffFFCCFF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(
+        title: const Text('D'),
+        backgroundColor: bgColor,
+      ),
+      body:  Center(
+        child: const Text('到达终点'),
+      ),
+    );
+  }
+}