Flutter TextField通过键盘隐藏

import 'package:flutter/material.dart';

class MyTextField extends StatefulWidget {
  @override
  _MyTextFieldState createState() => _MyTextFieldState();
}

class _MyTextFieldState extends State<MyTextField> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('TextField示例'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            TextField(
              decoration: InputDecoration(
                hintText: '请输入文本',
              ),
            ),
            SizedBox(height: 20),
            RaisedButton(
              child: Text('隐藏键盘'),
              onPressed: () {
                FocusScope.of(context).unfocus(); // 隐藏键盘
              },
            ),
          ],
        ),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MyTextField(),
  ));
}