Flutter打开WhatsApp插件open_whatsapp的使用

Flutter 打开 WhatsApp 插件 open_whatsapp 的使用

安装

要使用该插件，在你的 pubspec.yaml 文件中添加 'open_whatsapp' 作为依赖项。

dependencies:
  open_whatsapp: ^版本号

插件包链接

你可以从 GitHub 获取插件包。

使用

首先，你需要在项目中导入 open_whatsapp 包。然后，你可以在应用中使用它来打开 WhatsApp 并发送消息。

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

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

class MyApp extends StatefulWidget {
  [@override](/user/override)
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  // 初始化平台版本
  String _platformVersion = 'Unknown';

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

  // 初始化平台状态
  Future<void> initPlatformState() async {
    String platformVersion;
    try {
      platformVersion = await FlutterOpenWhatsapp.platformVersion;
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    if (!mounted) return;

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

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('插件示例应用'),
        ),
        body: Center(
          child: MaterialButton(
            onPressed: () {
              // 发送单个消息到指定号码
              FlutterOpenWhatsapp.sendSingleMessage("918179015345", "你好");
            },
            child: Text('运行于: $_platformVersion\n'),
          ),
        ),
      ),
    );
  }
}

示例

示例代码可以在 example/lib/main.dart 文件中找到。

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

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

class MyApp extends StatefulWidget {
  [@override](/user/override)
  _MyAppState createState() => _MyAppState();
}

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

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

  // 平台消息是异步的，因此我们在异步方法中初始化
  Future<void> initPlatformState() async {
    String platformVersion;
    try {
      platformVersion = await FlutterOpenWhatsapp.platformVersion;
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    if (!mounted) return;

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

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('插件示例应用'),
        ),
        body: Center(
          child: MaterialButton(
            onPressed: () {
              // 发送单个消息到指定号码
              FlutterOpenWhatsapp.sendSingleMessage("918179015345", "你好");
            },
            child: Text('运行于: $_platformVersion\n'),
          ),
        ),
      ),
    );
  }
}