如何通过 Flutter 应用启动 whatsapp 视频通话？答案

【问题标题】：How to launch whatsapp video call through a flutter app?如何通过 Flutter 应用启动 whatsapp 视频通话？
【发布时间】：2021-09-19 12:03:32
【问题描述】：

我们可以通过点击 Flutter 应用中的按钮进行 WhatsApp 视频通话吗？

【问题讨论】：

标签： flutter dart whatsapp videocall

【解决方案1】：

您可以参考WhatsApp官网并使用通用链接（see more）。例如，您可以使用此 URL 发送sample text：

const url = "https://wa.me/<number>?text=SAMPLE TEXT";

如果您尝试打开此 URL 并且用户在他/她的手机中有 WhatsApp，则此消息将在此应用程序中打开。您可以用给定的关键字替换text 来拨打电话。

【讨论】：

【解决方案2】：

然后添加此依赖项：

dependencies:
  call_with_whatsapp: ^0.0.1

然后：

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:call_with_whatsapp/call_with_whatsapp.dart';

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

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

  void _requestPermission() {
    CallWithWhatsapp.requestPermissions().then((x){
      print("success");
    }).catchError((e){
      print(e);
    });
  }

  void _openStore() {
    CallWithWhatsapp.openInPlayStore().then((x){
      print("success");
    }).catchError((e){
      print(e);
    });
  }

  void _initiateCall() {
    CallWithWhatsapp.initiateCall("01753230535").then((x){
      print("success");
    }).catchError((e){
      print(e);
    });
  }

  void _createNewContact() {
    CallWithWhatsapp.createContact("AAAAA AAAA", "0111111").then((x){
      print("success");
    }).catchError((e){
      print(e);
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body:SafeArea(
          child: Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: <Widget>[
                RaisedButton(
                  onPressed: _requestPermission,
                  child: Text(
                    "Request permission",
                  ),
                ),
                RaisedButton(
                  onPressed: _openStore,
                  child: Text(
                    "Open In Playstore",
                  ),
                ),
                RaisedButton(
                  onPressed: _initiateCall,
                  child: Text(
                    "Initiate Call",
                  ),
                ),
                RaisedButton(
                  onPressed: _createNewContact,
                  child: Text(
                    "Create contact",
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }


}

【讨论】：