无法创建文本字段边框颜色和粗细

无法为 TextField 创建边框颜色和粗细。您可以为输入字段添加边框

TextField(
 decoration: InputDecoration(
  border: OutlineInputBorder(),
 )
),

我想更改边框的颜色和粗细，但由于某种原因没有发生更改

TextField(
 decoration: InputDecoration(
  border: OutlineInputBorder(
   borderSide: BorderSide(
    color: Colors.pink,
    width: 5.0
   ),
  ),
 )
),

下面是完整的代码和截图

主要.dart

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
 const MyApp({Key? key}) : super(key: key);

 @override
 Widget build(BuildContext context) {
  return MaterialApp(
   debugShowCheckedModeBanner: false,
   title: 'Name App',
   theme: ThemeData(
    primarySwatch: Colors.blue,
   ),
   home: Scaffold(
    appBar: AppBar(
     title: const Text('Name Page'),
    ),
    body: const SafeArea(
     child: MyHomePage(),
    ),
   ),
  );
 }
}

class MyHomePage extends StatefulWidget {
 const MyHomePage({Key? key}) : super(key: key);

 @override
 _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {

 @override
 void initState() {
  super.initState();
 }

 @override
 void dispose() {
  super.dispose();
 }

 @override
 Widget build(BuildContext context) {
  return const Center(
   child: Padding(
    padding: EdgeInsets.symmetric(horizontal: 16.0),
    child: TextField(
     decoration: InputDecoration(
      border: OutlineInputBorder(
       borderSide: BorderSide(
        color: Colors.pink,
        width: 5.0
       ),
      ),
     )
    ),
   ),
  );
 }

}