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快速入門:將語音通話新增至您的應用程式

使用通話 SDK 將語音和視訊通話新增至您的應用程式,以開始使用 Azure 通訊服務。

在本快速入門中,您將了解如何使用適用於 Windows 的 Azure 通訊服務通話用戶端程式庫開始進行通話。

您可以從 GitHub 下載應用程式範例。

必要條件

若要完成本教學課程,您需要下列必要條件:

設定

建立專案

在 Visual Studio 中,使用 [空白應用程式 (通用 Windows)] 範本建立新專案,以設定單頁通用 Windows 平台 (UWP) 應用程式。

顯示 Visual Studio 內 [新 UWP 專案] 視窗的螢幕擷取畫面。

Install the package

以滑鼠右鍵選取您的專案,然後移至 Manage Nuget Packages 以安裝 Azure.Communication.Calling.WindowsClient 1.4.0 或更高版本。 如果您想要查看公開預覽的版本,請確定已核取 Include Prerelease

要求存取

移至 Package.appxmanifest 並選取 Capabilities。 勾選 Internet (Client)Internet (Client & Server) 以取得網際網路的輸入和輸出存取權。 勾選 Microphone 以存取麥克風的音訊來源,並勾選 Webcam 以存取相機的視訊來源。

顯示要求在 Visual Studio 中存取網際網路和麥克風的螢幕擷取畫面。

設定應用程式架構

我們必須設定基本配置來附加邏輯。 為了撥打外撥電話,我們需要 TextBox 來提供被通話者的使用者識別碼。 我們也需要 [Start/Join call] 按鈕和 [Hang up] 按鈕。 此範例中也包含 MuteBackgroundBlur 核取方塊,用於示範切換音訊狀態和視訊效果的功能。

開啟專案的 MainPage.xaml,並將 Grid 節點新增至 Page

<Page
    x:Class="CallingQuickstart.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:CallingQuickstart"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" Width="800" Height="600">

        <!-- Don't forget to replace ‘CallingQuickstart’ with your project’s name -->


    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="16*"/>
            <RowDefinition Height="30*"/>
            <RowDefinition Height="200*"/>
            <RowDefinition Height="60*"/>
            <RowDefinition Height="16*"/>
        </Grid.RowDefinitions>
        <TextBox Grid.Row="1" x:Name="CalleeTextBox" PlaceholderText="Who would you like to call?" TextWrapping="Wrap" VerticalAlignment="Center" Height="30" Margin="10,10,10,10" />

        <Grid x:Name="AppTitleBar" Background="LightSeaGreen">
            <TextBlock x:Name="QuickstartTitle" Text="Calling Quickstart sample title bar" Style="{StaticResource CaptionTextBlockStyle}" Padding="7,7,0,0"/>
        </Grid>

        <Grid Grid.Row="2">
            <Grid.RowDefinitions>
                <RowDefinition/>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <MediaPlayerElement x:Name="LocalVideo" HorizontalAlignment="Center" Stretch="UniformToFill" Grid.Column="0" VerticalAlignment="Center" AutoPlay="True" />
            <MediaPlayerElement x:Name="RemoteVideo" HorizontalAlignment="Center" Stretch="UniformToFill" Grid.Column="1" VerticalAlignment="Center" AutoPlay="True" />
        </Grid>
        <StackPanel Grid.Row="3" Orientation="Vertical" Grid.RowSpan="2">
            <StackPanel Orientation="Horizontal">
                <Button x:Name="CallButton" Content="Start/Join call" Click="CallButton_Click" VerticalAlignment="Center" Margin="10,0,0,0" Height="40" Width="123"/>
                <Button x:Name="HangupButton" Content="Hang up" Click="HangupButton_Click" VerticalAlignment="Center" Margin="10,0,0,0" Height="40" Width="123"/>
                <CheckBox x:Name="MuteLocal" Content="Mute" Margin="10,0,0,0" Click="MuteLocal_Click" Width="74"/>
            </StackPanel>
        </StackPanel>
        <TextBox Grid.Row="5" x:Name="Stats" Text="" TextWrapping="Wrap" VerticalAlignment="Center" Height="30" Margin="0,2,0,0" BorderThickness="2" IsReadOnly="True" Foreground="LightSlateGray" />
    </Grid>
</Page>

開啟 MainPage.xaml.cs 並將內容取代為下列實作:

using Azure.Communication.Calling.WindowsClient;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Threading.Tasks;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Core;
using Windows.Media.Core;
using Windows.Networking.PushNotifications;
using Windows.UI;
using Windows.UI.ViewManagement;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

namespace CallingQuickstart
{
    public sealed partial class MainPage : Page
    {
        private const string authToken = "<AUTHENTICATION_TOKEN>";

        private CallClient callClient;
        private CallTokenRefreshOptions callTokenRefreshOptions = new CallTokenRefreshOptions(false);
        private CallAgent callAgent;
        private CommunicationCall call;

        private LocalOutgoingAudioStream micStream;

        #region Page initialization
        public MainPage()
        {
            this.InitializeComponent();
            // Additional UI customization code goes here
        }

        protected override async void OnNavigatedTo(NavigationEventArgs e)
        {
            await InitCallAgentAndDeviceManagerAsync();

            base.OnNavigatedTo(e);
        }
        #endregion

        #region UI event handlers
        private async void CallButton_Click(object sender, RoutedEventArgs e)
        {
            // Start a call
        }

        private async void HangupButton_Click(object sender, RoutedEventArgs e)
        {
            // Hang up a call
        }

        private async void MuteLocal_Click(object sender, RoutedEventArgs e)
        {
            // Toggle mute/unmute audio state of a call
        }
        #endregion

        #region API event handlers
        private async void OnIncomingCallAsync(object sender, IncomingCallReceivedEventArgs args)
        {
            // Handle incoming call event
        }

        private async void OnStateChangedAsync(object sender, PropertyChangedEventArgs args)
        {
            // Handle connected and disconnected state change of a call
        }
        #endregion

        #region Helper methods

        private async Task InitCallAgentAndDeviceManagerAsync()
        {
            //Initialize the call agent and search for devices
        }


        private async Task<CommunicationCall> StartCallAsync(string acsCallee)
        {
            // Start a call to an Azure Communication Services user using the CallAgent and the callee id
        }

        #endregion
    }
}

物件模型

下方列出類別和介面的表格會處理 Azure 通訊服務通話 SDK 的一些主要功能:

名稱 描述
CallClient CallClient 是通話 SDK 的主要進入點。
CallAgent CallAgent 可用來開始和管理通話。
CommunicationCall CommunicationCall 可用來管理進行中的通話。
CallTokenCredential CallTokenCredential 可用來作為權杖認證以將 CallAgent 具現化。
CallIdentifier CallIdentifier 可用來代表使用者的身分識別,其可以是下列其中一個選項:UserCallIdentifierPhoneNumberCallIdentifier 等。

驗證用戶端

透過使用者存取權杖來將 CallAgent 執行個體初始化,此存取權杖可讓我們撥打和接聽通話,並選擇性地取得 DeviceManager 執行個體來查詢用戶端裝置設定。

在程式碼中,將 <AUTHENTICATION_TOKEN> 取代為使用者存取權杖。 如果您還沒有可用的權杖,請參閱使用者存取權杖文件。

新增 InitCallAgentAndDeviceManagerAsync 函式,以啟動 SDK。 您可以自訂此協助程式,以符合應用程式的需求。

        private async Task InitCallAgentAndDeviceManagerAsync()
        {
            this.callClient = new CallClient(new CallClientOptions() {
                Diagnostics = new CallDiagnosticsOptions() { 
                    
                    // make sure to put your project AppName
                    AppName = "CallingQuickstart",

                    AppVersion="1.0",

                    Tags = new[] { "Calling", "ACS", "Windows" }
                    }

                });

            // Set up local audio stream using the first mic enumerated
            var deviceManager = await this.callClient.GetDeviceManagerAsync();
            var mic = deviceManager?.Microphones?.FirstOrDefault();

            micStream = new LocalOutgoingAudioStream();

            var tokenCredential = new CallTokenCredential(authToken, callTokenRefreshOptions);

            var callAgentOptions = new CallAgentOptions()
            {
                DisplayName = $"{Environment.MachineName}/{Environment.UserName}",
            };

            this.callAgent = await this.callClient.CreateCallAgentAsync(tokenCredential, callAgentOptions);

            this.callAgent.IncomingCallReceived += OnIncomingCallAsync;
        }

啟動呼叫

取得 StartCallOptions 物件之後,即可使用 CallAgent 來起始 Azure 通訊服務通話:

        private async Task<CommunicationCall> StartCallAsync(string acsCallee)
        {
            var options = new StartCallOptions();
            var call = await this.callAgent.StartCallAsync( new [] { new UserCallIdentifier(acsCallee) }, options);
            return call;
        }

結束通話

按兩下 [Hang up] 按鈕時,結束目前的通話。 將實作新增至 HangupButton_Click 以結束通話,並停止預覽和視訊串流。

        private async void HangupButton_Click(object sender, RoutedEventArgs e)
        {
            var call = this.callAgent?.Calls?.FirstOrDefault();
            if (call != null)
            {
                await call.HangUpAsync(new HangUpOptions() { ForEveryone = false });
            }
        }

在音訊上切換靜音/取消靜音

按兩下 [Mute] 按鈕時,可將傳出音訊設為靜音。 將實作新增至 MuteLocal_Click 以將通話設為靜音。

        private async void MuteLocal_Click(object sender, RoutedEventArgs e)
        {
            var muteCheckbox = sender as CheckBox;

            if (muteCheckbox != null)
            {
                var call = this.callAgent?.Calls?.FirstOrDefault();

                if (call != null)
                {
                    if ((bool)muteCheckbox.IsChecked)
                    {
                        await call.MuteOutgoingAudioAsync();
                    }
                    else
                    {
                        await call.UnmuteOutgoingAudioAsync();
                    }
                }

                // Update the UI to reflect the state
            }
        }

接聽來電

IncomingCallReceived 事件接收設定於 SDK 啟動程序協助程式 InitCallAgentAndDeviceManagerAsync 中。

    this.callAgent.IncomingCallReceived += OnIncomingCallAsync;

應用程式有機會設定應如何接受來電,例如,視訊和音訊串流類型。

        private async void OnIncomingCallAsync(object sender, IncomingCallReceivedEventArgs args)
        {
            var incomingCall = args.IncomingCall;

            var acceptCallOptions = new AcceptCallOptions() { };

            call = await incomingCall.AcceptAsync(acceptCallOptions);
            call.StateChanged += OnStateChangedAsync;
        }

監視和回應通話狀態變更事件

當進行中的通話從一種狀態異動為另一種狀態時,就會引發 CommunicationCall 物件上的 StateChanged 事件。 應用程式有機會反映 UI 上的狀態變更,或插入商務邏輯。

        private async void OnStateChangedAsync(object sender, PropertyChangedEventArgs args)
        {
            var call = sender as CommunicationCall;

            if (call != null)
            {
                var state = call.State;

                // Update the UI

                switch (state)
                {
                    case CallState.Connected:
                        {
                            await call.StartAudioAsync(micStream);

                            break;
                        }
                    case CallState.Disconnected:
                        {
                            call.StateChanged -= OnStateChangedAsync;

                            call.Dispose();

                            break;
                        }
                    default: break;
                }
            }
        }

讓通話按鈕正常運作

一旦 Callee ID 不是 Null 或空白,您就可以開始通話。

通話狀態必須使用 OnStateChangedAsync 動作來變更。


    private async void CallButton_Click(object sender, RoutedEventArgs e)
    {
        var callString = CalleeTextBox.Text.Trim();

        if (!string.IsNullOrEmpty(callString))
        {
            call = await StartCallAsync(callString);

            call.StateChanged += OnStateChangedAsync;
        }
    
        
    }

執行程式碼

在 Visual Studio 中,您可以建置並執行程式碼。 針對解決方案平台,我們支援 ARM64x64x86

您可以在文字欄位中提供使用者識別碼並按一下 [Start Call/Join] 按鈕,以進行外撥通話。 呼叫 8:echo123,會將您連線到回應聊天機器人,此功能非常適合入門,以及驗證您的音訊裝置運作正常。

顯示執行 UWP 快速入門應用程式的螢幕擷取畫面

在本快速入門中,您將了解如何使用適用於 JavaScript 的 Azure 通訊服務通話 SDK 開始進行通話。

範例指令碼

您可以從 GitHub 下載應用程式範例。

注意

您可以使用 Azure 通訊服務 UI 程式庫 \(英文\),來存取外撥給 Azure 通訊服務使用者的通話。 此 UI 程式庫讓開發人員只需使用幾行程式碼,就能將已啟用 VoIP 的通話用戶端新增至其應用程式中。

必要條件

設定

建立新的 Node.js 應用程式

開啟您的終端機或命令視窗,為您的應用程式建立新的目錄,並瀏覽至該目錄。

mkdir calling-quickstart
cd calling-quickstart

執行 npm init -y 以使用預設設定建立 package.json 檔案。

npm init -y

Install the package

使用 npm install 命令,以安裝適用於 JavaScript 的 Azure 通訊服務通話 SDK。

npm install @azure/communication-common --save
npm install @azure/communication-calling --save

--save 選項會在您的 package.json 檔案中,將程式庫列為相依性。

設定應用程式架構

此快速入門會使用 Webpack 來組合應用程式資產。 執行下列命令以安裝 webpackwebpack-cliwebpack-dev-server npm 套件,並將其列為 package.json 中的開發相依性:

npm install copy-webpack-plugin@^11.0.0 webpack@^5.88.2 webpack-cli@^5.1.4 webpack-dev-server@^4.15.1 --save-dev

下列 html 需要新增至我們建立的 index.html 檔案中:

<!DOCTYPE html>
<html>
  <head>
    <title>Communication Client - Calling Sample</title>
  </head>
  <body>
    <h4>Azure Communication Services</h4>
    <h1>Calling Quickstart</h1>
    <input 
      id="token-input"
      type="text"
      placeholder="User access token"
      style="margin-bottom:1em; width: 200px;"
    />
    </div>
    <button id="token-submit" type="button">
        Submit
    </button>
    <input 
      id="callee-id-input"
      type="text"
      placeholder="Who would you like to call?"
      style="margin-bottom:1em; width: 200px; display: block;"
    />
    <div>
      <button id="call-button" type="button" disabled="true">
        Start Call
      </button>
      &nbsp;
      <button id="accept-call-button" type="button" disabled="true">
        Accept Call
      </button>
      &nbsp;
      <button id="hang-up-button" type="button" disabled="true">
        Hang Up
      </button>
    </div>
    <script src="./main.js"></script>
  </body>
</html>

在專案的根目錄中建立名為 index.js 的檔案,以包含本快速入門的應用程式邏輯。 新增下列程式碼以匯入通話用戶端,並取得 DOM 元素的參考,以便可以附加我們的商務邏輯。

import { CallClient } from "@azure/communication-calling";
import { AzureCommunicationTokenCredential } from '@azure/communication-common';

let call;
let incomingCall;
let callAgent;
let deviceManager;
let tokenCredential;
const userToken = document.getElementById("token-input"); 
const calleeInput = document.getElementById("callee-id-input");
const submitToken = document.getElementById("token-submit");
const callButton = document.getElementById("call-button");
const hangUpButton = document.getElementById("hang-up-button");
const acceptCallButton = document.getElementById('accept-call-button');

物件模型

下列類別和介面會處理 Azure 通訊服務通話 SDK 的一些重大功能:

名稱 描述
CallClient CallClient 是通話 SDK 的主要進入點。
CallAgent CallAgent 用於啟動和管理通話。
AzureCommunicationTokenCredential AzureCommunicationTokenCredential 類別會實作 CommunicationTokenCredential 介面,用來將 CallAgent 具現化。

驗證用戶端

您必須在文字欄位中輸入資源的有效使用者存取權杖,然後按兩下[提交]。 如果您還沒有可用的權杖,請參閱使用者存取權杖文件。 使用 CallClient,透過 CommunicationTokenCredential 來初始化 CallAgent 執行個體,以支援撥打和接收通話。

將下列程式碼新增到 app.js

submitToken.addEventListener("click", async () => {
  const callClient = new CallClient();
  const userTokenCredential = userToken.value;
    try {
      tokenCredential = new AzureCommunicationTokenCredential(userTokenCredential);
      callAgent = await callClient.createCallAgent(tokenCredential);
      deviceManager = await callClient.getDeviceManager();
      await deviceManager.askDevicePermission({ audio: true });
      callButton.disabled = false;
      submitToken.disabled = true;
      // Listen for an incoming call to accept.
      callAgent.on('incomingCall', async (args) => {
        try {
          incomingCall = args.incomingCall;
          acceptCallButton.disabled = false;
          callButton.disabled = true;
        } catch (error) {
          console.error(error);
        }
      });
    } catch(error) {
      window.alert("Please submit a valid token!");
    }
})

開始通話

新增事件處理常式,以在按一下 callButton 時起始通話:

callButton.addEventListener("click", () => {
  // start a call
  const userToCall = calleeInput.value;
  call = callAgent.startCall(
      [{ id: userToCall }],
      {}
  );
  // toggle button states
  hangUpButton.disabled = false;
  callButton.disabled = true;
});

結束通話

新增事件接聽程式,以在按一下 hangUpButton 時結束目前的通話:

hangUpButton.addEventListener("click", () => {
  // end the current call
  // The `forEveryone` property ends the call for all call participants.
  call.hangUp({ forEveryone: true });

  // toggle button states
  hangUpButton.disabled = true;
  callButton.disabled = false;
  submitToken.disabled = false;
  acceptCallButton.disabled = true;
});

接聽來電

新增事件接聽程式以接受 acceptCallButton 的撥入電話

acceptCallButton.onclick = async () => {
  try {
    call = await incomingCall.accept();
    acceptCallButton.disabled = true;
    hangUpButton.disabled = false;
  } catch (error) {
    console.error(error);
  }
}

新增 Webpack 本機伺服器程式碼

webpack.config.js 專案的根目錄中建立檔案,以包含此快速入門的本機伺服器邏輯。 將下列程式碼新增至 webpack.config.js

const path = require('path');
const CopyPlugin = require("copy-webpack-plugin");

module.exports = {
    mode: 'development',
    entry: './index.js',
    output: {
        filename: 'main.js',
        path: path.resolve(__dirname, 'dist'),
    },
    devServer: {
        static: {
            directory: path.join(__dirname, './')
        },
    },
    plugins: [
        new CopyPlugin({
            patterns: [
                './index.html'
            ]
        }),
    ]
};

執行程式碼

使用 npx webpack serve --config webpack.config.js 命令來執行您的應用程式。

開啟瀏覽器並瀏覽至 http://localhost:8080/. 您應該會看見下列畫面:

已完成的 JavaScript 應用程式的螢幕擷取畫面。

您可以在對應文字欄位中提供有效使用者存取權杖和使用者識別碼,並且按一下 [開始通話] 按鈕,以向外撥打 VOIP 通話。

呼叫 8:echo123 會將您連線到 Echo Bot,這非常適合用於開始使用和驗證音訊裝置。 將 {id: '8:echo123'} 傳遞給 CallAgent.startCall() API 以呼叫回應聊天機器人。 若要呼叫 Azure 通訊服務通訊使用者,請將 {communicationUserId: 'ACS_USER_ID'} 傳遞至 CallAgent.startCall() API。

在此快速入門中,您將了解如何使用適用於 Android 的 Azure 通訊服務通話 SDK,開始進行通話。

範例程式碼

您可以從 GitHub 下載應用程式範例。

必要條件

設定

建立具有空白活動的 Android 應用程式

從 Android Studio 中,選取 [啟動新的 Android Studio 專案]。

顯示在 Android Studio 中選取 [啟動新的 Android Studio 專案] 按鈕的螢幕擷取畫面。

選取 [手機和平板電腦] 底下的 [空白檢視活動] 專案範本。

顯示在 [專案範本] 畫面中選取 [空白活動] 選項的螢幕擷取畫面。

針對最低 SDK 選取 [API 26:Android 8.0(Oreo)] 或更新版本。

顯示在 [專案範本] 畫面 2 中選取 [空白活動] 選項的螢幕擷取畫面。

Install the package

找出您的專案 settings.gradle.kts,並務必在 pluginManagementdependencyResolutionManagement 下的存放庫清單看到 mavenCentral()

pluginManagement {
    repositories {
    ...
        mavenCentral()
    ...
    }
}

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
    ...
        mavenCentral()
    }
}

然後,在您的模組層級 build.gradle 中,將以下幾行新增至相依性和 android 區段

android {
    ...
    
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    ...
    implementation ("com.azure.android:azure-communication-calling:2.6.0")
    ...
}

將權限新增至應用程式資訊清單

為了要求進行通話所需的權限,必須在應用程式資訊清單 (app/src/main/AndroidManifest.xml) 中宣告。 使用下列程式碼取代檔案的內容:

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.contoso.acsquickstart">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <!--Our Calling SDK depends on the Apache HTTP SDK.
When targeting Android SDK 28+, this library needs to be explicitly referenced.
See https://developer.android.com/about/versions/pie/android-9.0-changes-28#apache-p-->
        <uses-library android:name="org.apache.http.legacy" android:required="false"/>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>
    

設定應用程式的配置

需要兩個輸入:被呼叫者識別碼的文字輸入,以及用來進行呼叫的按鈕。 這些輸入可以透過設計工具或藉由編輯版面配置 xml 來新增。 建立識別碼為 call_button、文字輸入為 callee_id 的按鈕。 瀏覽至 app/src/main/res/layout/activity_main.xml 並且以下列程式碼取代檔案的內容:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/call_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:text="Call"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <EditText
        android:id="@+id/callee_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Callee Id"
        android:inputType="textPersonName"
        android:minHeight="48dp"
        app:layout_constraintBottom_toTopOf="@+id/call_button"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

建立主要活動 Scaffolding 和繫結

建立版面配置之後,即可新增繫結,以及活動的基本 Scaffolding。 活動會處理要求執行階段權限、建立通話代理程式,並且在按下按鈕時進行通話。 每個項目都涵蓋在自己的區段中。 系統會覆寫 onCreate 方法以叫用 getAllPermissionscreateAgent,並新增呼叫按鈕的繫結。 此事件只會在建立活動時發生一次。 如需 onCreate 的詳細資訊,請參閱了解活動生命週期指南。

瀏覽至 MainActivity.java,然後以下列程式碼取代內容:

package com.contoso.acsquickstart;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import android.media.AudioManager;
import android.Manifest;
import android.content.pm.PackageManager;

import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.azure.android.communication.common.CommunicationUserIdentifier;
import com.azure.android.communication.common.CommunicationTokenCredential;
import com.azure.android.communication.calling.CallAgent;
import com.azure.android.communication.calling.CallClient;
import com.azure.android.communication.calling.StartCallOptions;


import java.util.ArrayList;
import java.util.Arrays;

public class MainActivity extends AppCompatActivity {
    
    private CallAgent callAgent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        getAllPermissions();
        createAgent();
        
        // Bind call button to call `startCall`
        Button callButton = findViewById(R.id.call_button);
        callButton.setOnClickListener(l -> startCall());
        
        setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);
    }

    /**
     * Request each required permission if the app doesn't already have it.
     */
    private void getAllPermissions() {
        // See section on requesting permissions
    }

    /**
      * Create the call agent for placing calls
      */
    private void createAgent() {
        // See section on creating the call agent
    }

    /**
     * Place a call to the callee id provided in `callee_id` text input.
     */
    private void startCall() {
        // See section on starting the call
    }
}

要求執行階段時的權限

針對 Android 6.0 和更新版本 (API 層級 23) 和 targetSdkVersion 23 或更新版本,權限會在執行階段授與,而不是在安裝應用程式時。 為了提供支援,可實作 getAllPermissions 來呼叫 ActivityCompat.checkSelfPermissionActivityCompat.requestPermissions,以取得每個必要的權限。

/**
 * Request each required permission if the app doesn't already have it.
 */
private void getAllPermissions() {
    String[] requiredPermissions = new String[]{android.Manifest.permission.RECORD_AUDIO, android.Manifest.permission.CAMERA, android.Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_PHONE_STATE};

    ArrayList<String> permissionsToAskFor = new ArrayList<>();

    for (String permission : requiredPermissions) {
        if (ActivityCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
            permissionsToAskFor.add(permission);
        }
    }

    if (!permissionsToAskFor.isEmpty()) {
        ActivityCompat.requestPermissions(this, permissionsToAskFor.toArray(new String[0]), 1);
    }
}

注意

在設計您的應用程式時,請考量何時應要求這些權限。 您應該視需要要求權限,而不是提前要求。 如需詳細資訊,請參閱 Android 權限指南 \(機器翻譯\)。

物件模型

下列類別和介面會處理 Azure 通訊服務通話 SDK 的一些重大功能:

名稱 描述
allClient CallClient 是通話 SDK 的主要進入點。
CallAgent CallAgent 可用來開始和管理通話。
CommunicationTokenCredential CommunicationTokenCredential 可作為權杖認證用來將 CallAgent 具現化。
CommunicationIdentifier CommunicationIdentifier 會當成可參與通話的不同參與者類型。

從使用者存取權杖建立代理程式

透過使用者權杖,可以將已驗證的呼叫代理程式具現化。 一般來說,此權杖會從具有應用程式特定驗證的服務產生。 如需使用者存取權杖的詳細資訊,請參閱使用者存取權杖指南。

在快速入門中,將 <User_Access_Token> 取代為針對您的 Azure 通訊服務資源所產生的使用者存取權杖。


/**
 * Create the call agent for placing calls
 */
private void createAgent() {
    String userToken = "<User_Access_Token>";

    try {
            CommunicationTokenCredential credential = new CommunicationTokenCredential(userToken);
            callAgent = new CallClient().createCallAgent(getApplicationContext(), credential).get();
    } catch (Exception ex) {
        Toast.makeText(getApplicationContext(), "Failed to create call agent.", Toast.LENGTH_SHORT).show();
    }
}

使用呼叫代理程式開始通話

您可以透過呼叫代理程式來進行呼叫,只需要提供被呼叫者識別碼和呼叫選項的清單。 在快速入門中,會使用沒有視訊的預設呼叫選項,以及文字輸入中的單一被呼叫者識別碼。

/**
 * Place a call to the callee id provided in `callee_id` text input.
 */
private void startCall() {
    EditText calleeIdView = findViewById(R.id.callee_id);
    
    String calleeId = calleeIdView.getText().toString();

    StartCallOptions options = new StartCallOptions();

    callAgent.startCall(
            getApplicationContext(),
            Arrays.asList(new CommunicationUserIdentifier[]{new CommunicationUserIdentifier(calleeId)}),
            options);
}

啟動應用程式並呼叫 Echo Bot

應用程式現在可以使用工具列上的 [執行應用程式] 按鈕 (Shift+F10) 來啟動。 確認您可以藉由呼叫 8:echo123 來進行通話。 系統會播放預先錄製的訊息,然後為您重複訊息。

顯示已完成應用程式的螢幕擷取畫面。

在此快速入門中,您將了解如何使用適用於 iOS 的 Azure 通訊服務通話 SDK,開始進行通話。

範例程式碼

您可以從 GitHub 下載應用程式範例。

必要條件

若要完成本教學課程,您需要下列必要條件:

  • 具有有效訂用帳戶的 Azure 帳戶。 免費建立帳戶

  • 執行 Xcode 的 Mac,以及安裝在您 Keychain 中的有效開發人員憑證。

  • 已部署通訊服務資源。 建立通訊服務資源。 您必須針對此快速入門記錄您的連接字串

  • 針對您的 Azure 通訊服務的使用者存取權杖。 您也可以使用 Azure CLI,並搭配您的連接字串執行命令,以建立使用者和存取權杖。

    az communication identity token issue --scope voip --connection-string "yourConnectionString"
    

    如需詳細資訊,請參閱使用 Azure CLI 建立和管理存取權杖

設定

建立 XCode 專案

在 Xcode 中建立新的 iOS 專案,並選取 [應用程式] 範本。 本教學課程使用 SwiftUI 架構,因此您應將 [語言] 設定為 [Swift],並將 [使用者介面] 設定為 [SwiftUI]。 進行本快速入門期間,您不會建立測試。 您可以取消核取 [包含測試]

顯示 Xcode 內 [新專案] 視窗的螢幕擷取畫面。

使用 CocoaPods 安裝套件和相依性

  1. 若要為應用程式建立 Podfile,請開啟終端,然後瀏覽至專案資料夾並執行:

    pod init

  2. 將下列程式碼新增至 Podfile 並儲存 (請確定 "target" 與您專案的名稱相符):

    platform :ios, '13.0'
    use_frameworks!
    
    target 'AzureCommunicationCallingSample' do
      pod 'AzureCommunicationCalling', '~> 1.0.0'
    end
    
  3. 執行 pod install

  4. 使用 Xcode 開啟 .xcworkspace

要求存取麥克風

您必須以 NSMicrophoneUsageDescription 更新應用程式的資訊屬性清單,才能存取裝置的麥克風。 您可以將相關聯的值設定為 string,此值會包含在系統用來向使用者要求存取權的對話中。

以滑鼠右鍵按一下專案樹狀結構的 Info.plist 項目,然後選取 [開啟形式] > [原始程式碼]。 將以下幾行新增至最上層 <dict> 區段中,然後儲存檔案。

<key>NSMicrophoneUsageDescription</key>
<string>Need microphone access for VOIP calling.</string>

設定應用程式架構

開啟專案的 ContentView.swift 檔案,並且將 import 宣告新增至檔案頂端,以匯入 AzureCommunicationCalling library。 此外,匯入 AVFoundation,我們需要此程式碼以便在程式碼中進行音訊權限要求。

import AzureCommunicationCalling
import AVFoundation

使用一些簡單的 UI 控制項來取代 ContentView 結構的實作,讓使用者可以起始和結束通話。 在本快速入門中,我們會將商務邏輯附加至這些控制項。

struct ContentView: View {
    @State var callee: String = ""
    @State var callClient: CallClient?
    @State var callAgent: CallAgent?
    @State var call: Call?

    var body: some View {
        NavigationView {
            Form {
                Section {
                    TextField("Who would you like to call?", text: $callee)
                    Button(action: startCall) {
                        Text("Start Call")
                    }.disabled(callAgent == nil)
                    Button(action: endCall) {
                        Text("End Call")
                    }.disabled(call == nil)
                }
            }
            .navigationBarTitle("Calling Quickstart")
        }.onAppear {
            // Initialize call agent
        }
    }

    func startCall() {
        // Ask permissions
        AVAudioSession.sharedInstance().requestRecordPermission { (granted) in
            if granted {
                // Add start call logic
            }
        }
    }

    func endCall() {
        // Add end call logic
    }
}

物件模型

下列類別和介面會處理 Azure 通訊服務通話 SDK 的一些重大功能:

名稱 描述
CallClient CallClient 是通話 SDK 的主要進入點。
CallAgent CallAgent 可用來開始和管理通話。
CommunicationTokenCredential CommunicationTokenCredential 可作為權杖認證用來將 CallAgent 具現化。
CommunicationUserIdentifier CommunicationUserIdentifier 可用來代表使用者的身分識別,其可以是下列其中一個選項:CommunicationUserIdentifierPhoneNumberIdentifierCallingApplication.

驗證用戶端

使用使用者存取權杖來初始化 CallAgent 執行個體,讓我們能夠進行和接收通話。

在下列程式碼中,您必須將 <USER ACCESS TOKEN> 取代為資源的有效使用者存取權杖。 如果您還沒有可用的權杖,請參閱使用者存取權杖文件。

將下列程式碼新增至 ContentView.swift 中的 onAppear 回撥:

var userCredential: CommunicationTokenCredential?
do {
    userCredential = try CommunicationTokenCredential(token: "<USER ACCESS TOKEN>")
} catch {
    print("ERROR: It was not possible to create user credential.")
    return
}

self.callClient = CallClient()

// Creates the call agent
self.callClient?.createCallAgent(userCredential: userCredential!) { (agent, error) in
    if error != nil {
        print("ERROR: It was not possible to create a call agent.")
        return
    }
    else {
        self.callAgent = agent
        print("Call agent successfully created.")
    }
}

開始通話

startCall 方法會設定為點選 [開始通話] 按鈕時要執行的動作。 更新此實作,以使用 ASACallAgent 開始通話:

func startCall()
{
    // Ask permissions
    AVAudioSession.sharedInstance().requestRecordPermission { (granted) in
        if granted {
            // start call logic
            let callees:[CommunicationIdentifier] = [CommunicationUserIdentifier(self.callee)]
            self.callAgent?.startCall(participants: callees, options: StartCallOptions()) { (call, error) in
                if (error == nil) {
                    self.call = call
                } else {
                    print("Failed to get call object")
                }
            }
        }
    }
}

您也可以使用 StartCallOptions 中的屬性來設定通話的初始選項 (也就是允許在麥克風靜音的情況下開始通話)。

結束通話

當點選 [結束通話] 按鈕時,請實作 endCall 方法來結束目前的通話。

func endCall()
{    
    self.call!.hangUp(options: HangUpOptions()) { (error) in
        if (error != nil) {
            print("ERROR: It was not possible to hangup the call.")
        }
    }
}

執行程式碼

您可以藉由選取 [產品] > [執行] 或使用 (⌘-R) 鍵盤快速鍵,在 iOS 模擬器上建置並執行應用程式。

快速入門應用程式的最終外觀與風格

您可以在文字欄位中提供使用者識別碼並且點選 [開始通話] 按鈕,以進行外撥 VOIP 通話。 呼叫 8:echo123 會將您連線到回應聊天機器人,此功能非常適合入門,以及驗證您的音訊裝置運作正常。

注意

第一次進行通話時,系統會提示您需要麥克風的存取權。 在實際執行環境應用程式中,您應該使用 AVAudioSession API 檢查權限狀態,並在未授與權限時,正常地更新應用程式的行為。

在此快速入門中,您將了解如何使用適用於 Unity 的 Azure 通訊服務通話 SDK,開始進行通話。

您可以從 GitHub 下載應用程式範例。

必要條件

若要完成本教學課程,您需要下列必要條件:

設定

建立專案

在 Unity Hub 中,使用 2D 核心範本來建立新專案,以設定 Unity 專案。

顯示 Unity Editor 內 [新專案] 視窗的螢幕擷取畫面。

Install the package

有兩種方式可安裝適用於 Unity 的 Azure 通訊通話 SDK。

  1. 從公用 npm 摘要下載 SDK \(英文\),並將其匯入到 Unity 編輯器的套件管理員,其位於 Windows 索引標籤底下。

  2. 從 Microsoft 下載混合實境功能工具,並透過混合實境工具管理員進行安裝。

設定應用程式架構

我們必須設定基本配置來附加邏輯。 為了撥打外撥電話,我們需要 TextBox 來提供被通話者的使用者識別碼。 我們也需要 Start/Join call 按鈕和 Hang up 按鈕。

在專案中建立名為 Main 的新場景。

開啟 Main.unity 檔案,然後使用下列實作取代內容:

Main.Unity 程式碼

Main.unity

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建立名為 AppManager.cs 的指令碼,並將其連結至 Unity 編輯器中的 AppManager 物件。 使用下列實作取代內容:

using Azure.Communication.Calling.UnityClient;
using System.Runtime.InteropServices.ComTypes;
using System;
using UnityEngine;
using System.Linq;
using UnityEngine.UI;
using UnityEngine.Video;
using TMPro;

/// <summary>
/// A singleton which hosts an Azure Communication calling client. This calling client 
/// is then shared across the application.
/// </summary>

public class AppManager : MonoBehaviour
{
    private CallClient callClient;
    private CallAgent callAgent;
    private DeviceManager deviceManager;
    private CommunicationCall call;
    private LocalOutgoingAudioStream micStream;

    public string CalleeIdentity { get; set; }

    public TMP_Text callStatus;

    public static AppManager Instance;

    private void Awake()
    {
        // start of new code
        if (Instance != null)
        {
            Destroy(gameObject);
            return;
        }
        // end of new code

        callClient = new CallClient();

        Instance = this;
        DontDestroyOnLoad(gameObject);

        InitCallAgentAndDeviceManagerAsync();
    }

    public async void CallButton_Click()
    {
        // Start a call
    }

    public async void HangupButton_Click()
    {
        // Hang up a call
    }

    private async void OnIncomingCallAsync(object sender, IncomingCallReceivedEventArgs args)
    {
        // Handle incoming call event
    }

    private void OnStateChangedAsync(object sender, Azure.Communication.Calling.UnityClient.PropertyChangedEventArgs args)
    {
        // Handle connected and disconnected state change of a call
    }

    //Used For Updating the UI
    private void Update()
    {
        if (call != null)
        {
            switch (call.State)
            {
                case CallState.Connected:
                    if (callStatus.text != "Connected")
                        callStatus.text = "Connected";
                    break;
                case CallState.Disconnected:
                    if (callStatus.text != "Disconnected")
                        callStatus.text = "Disconnected";
                    break;
            }
        }
    }
}

在名為 AppManager 的 GameObject 中,將新建立的指令碼拖曳到其指令碼元件中。 另外,將 [狀態] 文字物件拖曳至 [通話狀態] 文字欄位,以啟用通話狀態的 UI 更新。

物件模型

下方列出類別和介面的表格會處理 Azure 通訊服務通話 SDK 的一些主要功能:

名稱 描述
CallClient CallClient 是通話 SDK 的主要進入點。
CallAgent CallAgent 可用來開始和管理通話。
Call CommunicationCall 可用來管理進行中的通話。
CallTokenCredential CallTokenCredential 可用來作為權杖認證以將 CallAgent 具現化。
CallIdentifier CallIdentifier 可用來代表使用者的身分識別,其可以是下列其中一個選項:UserCallIdentifierPhoneNumberCallIdentifier 等。

驗證用戶端

透過使用者存取權杖來將 CallAgent 執行個體初始化,此存取權杖可讓我們撥打和接聽通話,並選擇性地取得 DeviceManager 執行個體來查詢用戶端裝置設定。

在程式碼中,將 <AUTHENTICATION_TOKEN> 取代為使用者存取權杖。 如果您還沒有可用的權杖,請參閱使用者存取權杖文件。

新增 InitCallAgentAndDeviceManagerAsync 函式,以啟動 SDK。 您可以自訂此協助程式,以符合應用程式的需求。

private async void InitCallAgentAndDeviceManagerAsync()
{

    deviceManager = await callClient.GetDeviceManager();

    var tokenCredential = new CallTokenCredential(<AUTHENTICATION_TOKEN>);

    var callAgentOptions = new CallAgentOptions()
    {
        DisplayName = $"{Environment.MachineName}/{Environment.UserName}",
    };

    callAgent = await callClient.CreateCallAgent(tokenCredential, callAgentOptions);
    callAgent.IncomingCallReceived += OnIncomingCallAsync;
}

啟動呼叫

取得 StartCallOptions 物件之後,即可使用 CallAgent 來起始 Azure 通訊服務通話:

public async void CallButton_Click()
{
    var startCallOptions = new StartCallOptions();
    startCallOptions = new StartCallOptions();

    var callee = new UserCallIdentifier(CalleeIdentity);

    call = await callAgent.StartCallAsync(new CallIdentifier[] { callee }, startCallOptions);
    // Set up handler for call StateChanged event
    call.StateChanged += OnStateChangedAsync;
}

結束通話

按兩下 [Hang up] 按鈕時,結束目前的通話。 將實作新增至 HangupButton_Click 以結束通話,並停止預覽和視訊串流。

public async void HangupButton_Click()
{
    if (call != null)
    {
        try
        {
            await call.HangUpAsync(new HangUpOptions() { ForEveryone = false });
        }
        catch (Exception ex)
        {
        }
    }
}

接聽來電

IncomingCallReceived 事件接收設定於 SDK 啟動程序協助程式 InitCallAgentAndDeviceManagerAsync 中。

callAgent.IncomingCallReceived += OnIncomingCallAsync;

應用程式有機會設定應如何接受來電,例如,視訊和音訊串流類型。

private async void OnIncomingCallAsync(object sender, IncomingCallReceivedEventArgs args)
{
    var incomingCall = args.IncomingCall;

    var acceptCallOptions = new AcceptCallOptions()
    {
        IncomingVideoOptions = new IncomingVideoOptions()
        {
            StreamKind = VideoStreamKind.RemoteIncoming
        }
    };

    call = await incomingCall.AcceptAsync(acceptCallOptions);
    // Set up handler for incoming call StateChanged event
    call.StateChanged += OnStateChangedAsync;
}

監視和回應通話狀態變更事件

當進行中的通話從一種狀態異動為另一種狀態時,就會引發 Call 物件上的 StateChanged 事件。 應用程式有機會反映 UI 上的狀態變更,或插入商務邏輯。

private async void OnStateChangedAsync(object sender, PropertyChangedEventArgs args)
{
    var call = sender as CommunicationCall;

    if (call != null)
    {
        var state = call.State;
        switch (state)
        {
            case CallState.Connected:
                {
                    await call.StartAudioAsync(micStream);

                    break;
                }
            case CallState.Disconnected:
                {
                    call.StateChanged -= OnStateChangedAsync;

                    call.Dispose();

                    break;
                }
            default: break;
        }
    }
}

執行程式碼

您可以在 Unity 編輯器或使用 Unity 的裝置上建置並執行程式碼。

您可以在文字欄位中提供使用者識別碼並按一下 [Start Call/Join] 按鈕,以進行外撥通話。 呼叫 8:echo123,會將您連線到回應聊天機器人,此功能非常適合入門,以及驗證您的音訊裝置運作正常。

顯示執行 Unity 快速入門應用程式的螢幕擷取畫面。

清除資源

如果您想要清除並移除通訊服務訂用帳戶,您可以刪除資源或資源群組。 刪除資源群組也會刪除與其相關聯的任何其他資源。 深入了解如何清除資源

下一步

如需詳細資訊,請參閱下列文章: