Flutter电话号码选择器插件phoneselectorhint的使用

Flutter电话号码选择器插件phoneselectorhint的使用

phoneselectorhint 是一个用于在Android设备上实现电话号码选择器提示功能的Flutter插件。该插件允许用户通过点击按钮来选择他们的手机号码。

示例代码

以下是一个完整的示例代码，展示了如何使用 phoneselectorhint 插件来获取用户的手机号码。

import 'dart:async';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:phoneselectorhint/phoneselectorhint.dart';

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

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

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _hint = '';

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
  }

  String? hint;

  // 平台消息是异步的，所以我们在一个异步方法中初始化。
  Future<void> initPlatformState() async {
    String platformVersion;

    // 平台消息可能会失败，所以我们使用try/catch处理PlatformException。
    // 我们还处理消息可能返回null的情况。
    try {
      platformVersion = await Phoneselectorhint.platformVersion ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // 如果在异步平台消息传输期间小部件从树中移除，我们希望丢弃回复而不是调用
    // setState来更新我们的非存在的外观。
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
      hint = _hint;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Phone Selector Hint'),
          actions: [],
        ),
        persistentFooterButtons: [
          Text(
            "Done by Gobal Krishnan V, Flutter Developer & Engineer",
            style: TextStyle(fontSize: 8),
          )
        ],
        body: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text("注意：点击“Hint”按钮以选择手机号码"),
            Center(
              child: Text(
                '手机号码 : $hint\n',
                style: TextStyle(fontSize: 23),
              ),
            ),
          ],
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () async {
            if (Platform.isAndroid) {
              try {
                _hint = await Phoneselectorhint.hint ?? '';
                setState(() {
                  hint = _hint;
                });
                print("电话号码 - $_hint");
              } on PlatformException {
                _hint = '电话号码不可用';
              }
            } else {
              // 在非Android平台上显示错误信息
              _hint = '此功能仅适用于Android平台';
              setState(() {
                hint = _hint;
              });
            }
          },
          child: Text("Hint"),
        ),
      ),
    );
  }
}

代码解释

1. 导入必要的包：

   import 'dart:async';
   import 'dart:io';
   
   import 'package:flutter/material.dart';
   import 'package:flutter/services.dart';
   import 'package:phoneselectorhint/phoneselectorhint.dart';
   

2. 主函数：

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

3. 定义应用程序状态类：

   class MyApp extends StatefulWidget {
     const MyApp({Key? key}) : super(key: key);
   
     [@override](/user/override)
     State<MyApp> createState() => _MyAppState();
   }
   

4. 初始化状态：

   class _MyAppState extends State<MyApp> {
     String _platformVersion = 'Unknown';
     String _hint = '';
   
     [@override](/user/override)
     void initState() {
       super.initState();
       initPlatformState();
     }
   

5. 初始化平台状态：

   Future<void> initPlatformState() async {
     String platformVersion;
   
     try {
       platformVersion = await Phoneselectorhint.platformVersion ?? 'Unknown platform version';
     } on PlatformException {
       platformVersion = 'Failed to get platform version.';
     }
   
     if (!mounted) return;
   
     setState(() {
       _platformVersion = platformVersion;
       hint = _hint;
     });
   }
   

6. 构建UI：

   [@override](/user/override)
   Widget build(BuildContext context) {
     return MaterialApp(
       debugShowCheckedModeBanner: false,
       home: Scaffold(
         appBar: AppBar(
           title: const Text('Phone Selector Hint'),
           actions: [],
         ),
         persistentFooterButtons: [
           Text(
             "Done by Gobal Krishnan V, Flutter Developer & Engineer",
             style: TextStyle(fontSize: 8),
           )
         ],
         body: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Text("注意：点击“Hint”按钮以选择手机号码"),
             Center(
               child: Text(
                 '手机号码 : $hint\n',
                 style: TextStyle(fontSize: 23),
               ),
             ),
           ],
         ),
         floatingActionButton: FloatingActionButton(
           onPressed: () async {
             if (Platform.isAndroid) {
               try {
                 _hint = await Phoneselectorhint.hint ?? '';
                 setState(() {
                   hint = _hint;
                 });
                 print("电话号码 - $_hint");
               } on PlatformException {
                 _hint = '电话号码不可用';
               }
             } else {
               _hint = '此功能仅适用于Android平台';
               setState(() {
                 hint = _hint;
               });
             }
           },
           child: Text("Hint"),
         ),
       ),
     );
   }