make running snippet more convenient

2025-12-17 07:14:28 +01:00 · 2023-01-27 23:06:47 +08:00
parent b6ab4b7fde
commit 913ce312de
11 changed files with 148 additions and 63 deletions
--- a/lib/view/widget/picker.dart
+++ b/lib/view/widget/picker.dart
@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+Widget buildPicker(List<Widget> items, Function(int idx) onSelected) {
+  return SizedBox(
+    height: 111,
+    child: Stack(
+      children: [
+        Positioned(
+          top: 36,
+          bottom: 36,
+          left: 0,
+          right: 0,
+          child: Container(
+            height: 37,
+            decoration: const BoxDecoration(
+              borderRadius: BorderRadius.all(Radius.circular(7)),
+              color: Colors.black12,
+            ),
+          ),
+        ),
+        ListWheelScrollView.useDelegate(
+          itemExtent: 37,
+          diameterRatio: 1.2,
+          controller: FixedExtentScrollController(initialItem: 0),
+          onSelectedItemChanged: (idx) => onSelected(idx),
+          physics: const FixedExtentScrollPhysics(),
+          childDelegate: ListWheelChildBuilderDelegate(
+              builder: (context, index) => Center(
+                    child: items[index],
+                  ),
+              childCount: items.length),
+        )
+      ],
+    ),
+  );
+}