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lib/cases/guess/guess_app_bar.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+class GuessAppBar extends StatelessWidget implements PreferredSizeWidget {
+  final VoidCallback onCheck;
+  final TextEditingController controller;
+
+  const GuessAppBar({
+    Key? key,
+    required this.onCheck,
+    required this.controller,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return AppBar(
+      leading: Icon(Icons.menu, color: Colors.black),
+      actions: [
+        IconButton(
+            splashRadius: 20,
+            onPressed: onCheck,
+            icon: Icon(
+              Icons.run_circle_outlined,
+              color: Colors.blue,
+            ))
+      ],
+      title: TextField(
+        controller: controller,
+        keyboardType: TextInputType.number,
+        decoration: InputDecoration(
+            filled: true,
+            fillColor: Color(0xffF3F6F9),
+            constraints: BoxConstraints(maxHeight: 34), //约束信息
+            contentPadding: EdgeInsets.only(top: -14,left: 10),
+            border: UnderlineInputBorder(
+              borderSide: BorderSide.none,
+              borderRadius: BorderRadius.all(Radius.circular(6)),
+            ),
+            hintText: "输入 0~99 数字",
+            hintStyle: TextStyle(fontSize: 14)),
+      ),
+    );
+  }
+
+  @override
+  Size get preferredSize => const Size.fromHeight(kToolbarHeight);
+}