Flutter键盘操作插件ios_keyboard_action的使用

ios_keyboard_action 是一个用于在iOS键盘上方显示操作按钮的Flutter插件。它可以帮助用户更方便地进行表单输入操作，如“下一步”、“上一步”和“完成”。

特性

轻松在iOS键盘上方显示一个操作按钮。

依赖安装

在 pubspec.yaml 文件中添加以下依赖：

dependencies:
  ios_keyboard_action: ^0.0.2

导入插件

在 Dart 文件中导入插件：

import 'package:ios_keyboard_action/ios_keyboard_action.dart';

使用方法

下面是一个完整的示例代码，展示了如何使用 IOSKeyboardAction 小部件来实现键盘上的操作按钮。

示例代码

import 'package:flutter/material.dart';
import 'package:ios_keyboard_action/ios_keyboard_action.dart';

void main() {
  runApp(const MyApp());
}

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

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'IOSKeyboardAction'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  [@override](/user/override)
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final nextFieldFocus = FocusNode();
  final previousFieldFocus = FocusNode();
  final doneFieldFocus = FocusNode();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Padding(
          padding: const EdgeInsets.all(32),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              IOSKeyboardAction(
                label: 'Next field',
                focusNode: nextFieldFocus,
                focusActionType: FocusActionType.next,
                child: TextField(
                  decoration: const InputDecoration(
                    labelText: 'Next',
                  ),
                  focusNode: nextFieldFocus,
                  keyboardType: TextInputType.number,
                ),
              ),
              IOSKeyboardAction(
                label: 'Previous field',
                focusNode: previousFieldFocus,
                focusActionType: FocusActionType.previous,
                child: TextField(
                  decoration: const InputDecoration(
                    labelText: 'Previous',
                  ),
                  focusNode: previousFieldFocus,
                  keyboardType: TextInputType.number,
                ),
              ),
              IOSKeyboardAction(
                focusNode: doneFieldFocus,
                focusActionType: FocusActionType.done,
                onTap: () => _showModal(context),
                child: TextField(
                  decoration: const InputDecoration(
                    labelText: 'Done',
                  ),
                  focusNode: doneFieldFocus,
                  keyboardType: TextInputType.number,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  [@override](/user/override)
  void dispose() {
    nextFieldFocus.dispose();
    doneFieldFocus.dispose();
    previousFieldFocus.dispose();
    super.dispose();
  }

  void _showModal(BuildContext context) => showModalBottomSheet(
        context: context,
        builder: (context) {
          return const SizedBox(
            height: 200,
            child: Center(
              child: Text('Done pressed'),
            ),
          );
        },
      );
}