快速入門：建置沈浸式閱讀程式應用程式
沈浸式閱讀程式是經過全面設計的工具，可實作經實證的技術並針對入門讀者、語言學習者及存在學習差異 (例如讀寫障礙) 的人士改善其閱讀理解程度。 您可以在應用程式中使用沈浸式閱讀程式來隔離文字，以改善焦點、顯示常用單字的圖片、醒目提示語音的部分、朗讀選取的文字、即時轉譯單字和片語等等。
在本快速入門指南中，您會使用 C# 從頭開始建置 Web 應用程式，並使用用戶端程式庫來整合沈浸式閱讀程式。 本快速入門的完整工作範例可以在 GitHub 取得。
必要條件
- Azure 訂用帳戶。 您可以免費建立一個訂用帳戶。
- 為 Microsoft Entra 驗證所設定的沉浸式閱讀程式資源。 遵循這些指引來設定。 將工作階段輸出儲存到文字檔中以設定環境屬性。
- Visual Studio 2022。
建立 Web 應用程式專案
在 Visual Studio 中，使用內建 Model-View-Controller 的 ASP.NET Core Web 應用程式範本和 ASP.NET Core 6 來建立新的專案。 將專案命名為 QuickstartSampleWebApp。
設定驗證
以滑鼠右鍵按一下方案總管中的專案，然後選擇 [管理使用者密碼]。 這會開啟名稱為 secrets.json 的檔案。 此檔案不會簽入原始檔控制。 若要深入了解，請參閱安全儲存應用程式秘密。 以下列內容取代 secrets.json 的內容，並使用您建立沈浸式閱讀程式資源時提供的值。
重要
請記得不要公開張貼秘密。 在生產環境中，請使用安全的方式來儲存和存取您的認證，例如 Azure Key Vault。
{
"TenantId": "YOUR_TENANT_ID",
"ClientId": "YOUR_CLIENT_ID",
"ClientSecret": "YOUR_CLIENT_SECRET",
"Subdomain": "YOUR_SUBDOMAIN"
}
安裝 Identity Client NuGet 套件
下列程式碼使用 Microsoft.Identity.Client NuGet 套件中的物件，所以您必須在專案中新增該套件的參考。
重要
Microsoft.IdentityModel.Clients.ActiveDirectory NuGet 套件和 Azure AD 驗證程式庫 (ADAL) 已被取代。 自 2020 年 6 月 30 日起，未新增任何新功能。 強烈建議您升級。 如需詳細資訊，請參閱移轉指南。
從 [工具] - >[NuGet 套件管理員] - >[套件管理員主控台] 開啟 NuGet 套件管理員主控台，然後執行下列命令：
Install-Package Microsoft.Identity.Client -Version 4.59.0
更新控制器以取得權杖
開啟 Controllers\HomeController.cs，然後在檔案頂端的 using 陳述式後面加入下列程式碼。
using Microsoft.Identity.Client;
將控制器設定為從 secrets.json 取得 Microsoft Entra ID 值。 在 HomeController 類別頂端的 public class HomeController : Controller { 後面加入下列程式碼。
private readonly string TenantId; // Azure subscription TenantId
private readonly string ClientId; // Microsoft Entra ApplicationId
private readonly string ClientSecret; // Microsoft Entra Application Service Principal password
private readonly string Subdomain; // Immersive Reader resource subdomain (resource 'Name' if the resource was created in the Azure portal, or 'CustomSubDomain' option if the resource was created with Azure CLI PowerShell. Check the Azure portal for the subdomain on the Endpoint in the resource Overview page, for example, 'https://[SUBDOMAIN].cognitiveservices.azure.com/')
private IConfidentialClientApplication _confidentialClientApplication;
private IConfidentialClientApplication ConfidentialClientApplication
{
get {
if (_confidentialClientApplication == null) {
_confidentialClientApplication = ConfidentialClientApplicationBuilder.Create(ClientId)
.WithClientSecret(ClientSecret)
.WithAuthority($"https://login.windows.net/{TenantId}")
.Build();
}
return _confidentialClientApplication;
}
}
public HomeController(Microsoft.Extensions.Configuration.IConfiguration configuration)
{
TenantId = configuration["TenantId"];
ClientId = configuration["ClientId"];
ClientSecret = configuration["ClientSecret"];
Subdomain = configuration["Subdomain"];
if (string.IsNullOrWhiteSpace(TenantId))
{
throw new ArgumentNullException("TenantId is null! Did you add that info to secrets.json?");
}
if (string.IsNullOrWhiteSpace(ClientId))
{
throw new ArgumentNullException("ClientId is null! Did you add that info to secrets.json?");
}
if (string.IsNullOrWhiteSpace(ClientSecret))
{
throw new ArgumentNullException("ClientSecret is null! Did you add that info to secrets.json?");
}
if (string.IsNullOrWhiteSpace(Subdomain))
{
throw new ArgumentNullException("Subdomain is null! Did you add that info to secrets.json?");
}
}
/// <summary>
/// Get a Microsoft Entra ID authentication token
/// </summary>
public async Task<string> GetTokenAsync()
{
const string resource = "https://cognitiveservices.azure.com/";
var authResult = await ConfidentialClientApplication.AcquireTokenForClient(
new[] { $"{resource}/.default" })
.ExecuteAsync()
.ConfigureAwait(false);
return authResult.AccessToken;
}
[HttpGet]
public async Task<JsonResult> GetTokenAndSubdomain()
{
try
{
string tokenResult = await GetTokenAsync();
return new JsonResult(new { token = tokenResult, subdomain = Subdomain });
}
catch (Exception e)
{
string message = "Unable to acquire Microsoft Entra token. Check the console for more information.";
Debug.WriteLine(message, e);
return new JsonResult(new { error = message });
}
}
新增範例內容
首先，開啟 Views\Shared\Layout.cshtml。 在 </head> 行之前加入下列程式碼：
@RenderSection("Styles", required: false)
現在，將範例內容新增至此 Web 應用程式。 開啟 Views\Home\Index.cshtml，並且以下列範例取代所有自動產生的程式碼：
@{
ViewData["Title"] = "Immersive Reader C# Quickstart";
}
@section Styles {
<style type="text/css">
.immersive-reader-button {
background-color: white;
margin-top: 5px;
border: 1px solid black;
float: right;
}
</style>
}
<div class="container">
<button class="immersive-reader-button" data-button-style="iconAndText" data-locale="en"></button>
<h1 id="ir-title">About Immersive Reader</h1>
<div id="ir-content" lang="en-us">
<p>
Immersive Reader is a tool that implements proven techniques to improve reading comprehension for emerging readers, language learners, and people with learning differences.
The Immersive Reader is designed to make reading more accessible for everyone. The Immersive Reader
<ul>
<li>
Shows content in a minimal reading view
</li>
<li>
Displays pictures of commonly used words
</li>
<li>
Highlights nouns, verbs, adjectives, and adverbs
</li>
<li>
Reads your content out loud to you
</li>
<li>
Translates your content into another language
</li>
<li>
Breaks down words into syllables
</li>
</ul>
</p>
<h3>
The Immersive Reader is available in many languages.
</h3>
<p lang="es-es">
El Lector inmersivo está disponible en varios idiomas.
</p>
<p lang="zh-cn">
沉浸式阅读器支持许多语言
</p>
<p lang="de-de">
Der plastische Reader ist in vielen Sprachen verfügbar.
</p>
<p lang="ar-eg" dir="rtl" style="text-align:right">
يتوفر \"القارئ الشامل\" في العديد من اللغات.
</p>
</div>
</div>
請注意，所有文字都會有一個 lang 屬性，用於描述文字的語言。 此屬性可協助沈浸式閱讀程式提供相關的語言和文法功能。
新增 JavaScript 以處理沈浸式閱讀程式的啟動
「沈浸式閱讀程式」程式庫提供的功能包括啟動沈浸式閱讀程式，以及呈現沈浸式閱讀程式按鈕。 若要深入了解，請參閱 JavaScript SDK 參考。
在 Views\Home\Index.cshtml 的底部新增下列程式碼：
@section Scripts
{
<script src="https://ircdname.azureedge.net/immersivereadersdk/immersive-reader-sdk.1.4.0.js"></script>
<script>
function getTokenAndSubdomainAsync() {
return new Promise(function (resolve, reject) {
$.ajax({
url: "@Url.Action("GetTokenAndSubdomain", "Home")",
type: "GET",
success: function (data) {
if (data.error) {
reject(data.error);
} else {
resolve(data);
}
},
error: function (err) {
reject(err);
}
});
});
}
$(".immersive-reader-button").click(function () {
handleLaunchImmersiveReader();
});
function handleLaunchImmersiveReader() {
getTokenAndSubdomainAsync()
.then(function (response) {
const token = response["token"];
const subdomain = response["subdomain"];
// Learn more about chunk usage and supported MIME types https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#chunk
const data = {
title: $("#ir-title").text(),
chunks: [{
content: $("#ir-content").html(),
mimeType: "text/html"
}]
};
// Learn more about options https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#options
const options = {
"onExit": exitCallback,
"uiZIndex": 2000
};
ImmersiveReader.launchAsync(token, subdomain, data, options)
.catch(function (error) {
alert("Error in launching the Immersive Reader. Check the console.");
console.log(error);
});
})
.catch(function (error) {
alert("Error in getting the Immersive Reader token and subdomain. Check the console.");
console.log(error);
});
}
function exitCallback() {
console.log("This is the callback function. It is executed when the Immersive Reader closes.");
}
</script>
}
建置並執行應用程式
從功能表列中選取 [偵錯與開始偵錯]，或按 F5 以啟動應用程式。>
在瀏覽器中，您應該會看到：
啟動沈浸式閱讀程式
當您選取 [沈浸式閱讀程式] 按鈕時，會啟動沈浸式閱讀程式且其內容顯示在頁面上。
後續步驟
在本快速入門中，您會從頭開始建置 Web 應用程式，並使用沈浸式閱讀程式用戶端程式庫來整合沈浸式閱讀程式。 本快速入門的完整工作範例可以在 GitHub 取得。
必要條件
- Azure 訂用帳戶。 您可以免費建立一個訂用帳戶。
- 為 Microsoft Entra 驗證所設定的沉浸式閱讀程式資源。 遵循這些指引來設定。 將工作階段輸出儲存到文字檔中以設定環境屬性。
- 整合式開發環境，例如 Visual Studio Code。
使用 Express 建立 Node.js Web 應用程式
通過使用 express-generator 工具建立 Node.js Web 應用程式。
npm install express-generator -g
express --view=pug quickstart-nodejs
cd quickstart-nodejs
安裝 yarn 相依性，並新增 request 和 dotenv 相依性。
yarn
yarn add request
yarn add dotenv
安裝 axios 和 qs 程式庫。
npm install axios qs
設定驗證
在專案的根目錄中，建立名為 .env 的新檔案。 將下列程式碼貼入其中，然後使用您建立沈浸式閱讀程式資源時提供的值。 請勿包含引號或 { 和 } 字元。
重要
請記得不要公開張貼秘密。 在生產環境中，請使用安全的方式來儲存和存取您的認證，例如 Azure Key Vault。
TENANT_ID={YOUR_TENANT_ID}
CLIENT_ID={YOUR_CLIENT_ID}
CLIENT_SECRET={YOUR_CLIENT_SECRET}
SUBDOMAIN={YOUR_SUBDOMAIN}
請勿將此檔案提交到原始檔控制，因為其中包含不應公開的機密資料。
接著，開啟 app.js 並將下列程式碼新增至檔案開頭處。 這會將 .env 檔案中定義的屬性當作環境變數載入 Node 中。
require('dotenv').config();
更新路由器以取得權杖
開啟 routes\index.js 檔案，並以下列程式碼取代自動產生的程式碼。
此程式碼會建立 API 端點，其可使用服務主體密碼取得 Microsoft Entra ID 驗證權杖。 也會擷取子網域。 然後會傳回包含權杖和子網域的物件。
var axios = require('axios');
var express = require('express');
var router = express.Router();
var qs = require('qs');
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});
router.get('/GetTokenAndSubdomain', function(req, res) {
try {
var config ={
headers: {
'content-type': 'application/x-www-form-urlencoded'
}
}
var data = {
grant_type: 'client_credentials',
client_id: process.env.CLIENT_ID,
client_secret: process.env.CLIENT_SECRET,
resource: 'https://cognitiveservices.azure.com/'
};
var url = `https://login.windows.net/${process.env.TENANT_ID}/oauth2/token`
console.log(qs.stringify(data));
axios.post(url, qs.stringify(data), config)
.then(function (response) {
var token = response.data.access_token;
var subdomain = process.env.SUBDOMAIN;
return res.send({token, subdomain});
})
.catch(function (response) {
if (response.status !== 200) {
return res.send({error : "Unable to acquire Microsoft Entra token. Check the debugger for more information."})
}
});
} catch (error) {
console.log(error);
return res.status(500).send('CogSvcs IssueToken error');
}
});
module.exports = router;
GetTokenAndSubdomain API 端點應在某種形式的驗證 (例如 OAuth) 後方受到保護，以防止未經授權的使用者取得權杖，而使用您的沈浸式閱讀程式服務和計費；該工作不在本快速入門的討論範圍內。
新增範例內容
現在，將範例內容新增至此 Web 應用程式。 開啟 views\index.pug，並且以下列範例取代自動產生的程式碼：
doctype html
html
head
title Immersive Reader Quickstart Node.js
link(rel='icon', href='data:;base64,iVBORw0KGgo=')
link(rel='stylesheet', href='https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css')
// A polyfill for Promise is needed for IE11 support.
script(src='https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js')
script(src='https://ircdname.azureedge.net/immersivereadersdk/immersive-reader-sdk.1.4.0.js')
script(src='https://code.jquery.com/jquery-3.3.1.min.js')
style(type="text/css").
.immersive-reader-button {
background-color: white;
margin-top: 5px;
border: 1px solid black;
float: right;
}
body
div(class="container")
button(class="immersive-reader-button" data-button-style="iconAndText" data-locale="en")
h1(id="ir-title") About Immersive Reader
div(id="ir-content" lang="en-us")
p Immersive Reader is a tool that implements proven techniques to improve reading comprehension for emerging readers, language learners, and people with learning differences. The Immersive Reader is designed to make reading more accessible for everyone. The Immersive Reader
ul
li Shows content in a minimal reading view
li Displays pictures of commonly used words
li Highlights nouns, verbs, adjectives, and adverbs
li Reads your content out loud to you
li Translates your content into another language
li Breaks down words into syllables
h3 The Immersive Reader is available in many languages.
p(lang="es-es") El Lector inmersivo está disponible en varios idiomas.
p(lang="zh-cn") 沉浸式阅读器支持许多语言
p(lang="de-de") Der plastische Reader ist in vielen Sprachen verfügbar.
p(lang="ar-eg" dir="rtl" style="text-align:right") يتوفر \"القارئ الشامل\" في العديد من اللغات.
script(type="text/javascript").
function getTokenAndSubdomainAsync() {
return new Promise(function (resolve, reject) {
$.ajax({
url: "/GetTokenAndSubdomain",
type: "GET",
success: function (data) {
if (data.error) {
reject(data.error);
} else {
resolve(data);
}
},
error: function (err) {
reject(err);
}
});
});
}
$(".immersive-reader-button").click(function () {
handleLaunchImmersiveReader();
});
function handleLaunchImmersiveReader() {
getTokenAndSubdomainAsync()
.then(function (response) {
const token = response["token"];
const subdomain = response["subdomain"];
// Learn more about chunk usage and supported MIME types https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#chunk
const data = {
title: $("#ir-title").text(),
chunks: [{
content: $("#ir-content").html(),
mimeType: "text/html"
}]
};
// Learn more about options https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#options
const options = {
"onExit": exitCallback,
"uiZIndex": 2000
};
ImmersiveReader.launchAsync(token, subdomain, data, options)
.catch(function (error) {
alert("Error in launching the Immersive Reader. Check the console.");
console.log(error);
});
})
.catch(function (error) {
alert("Error in getting the Immersive Reader token and subdomain. Check the console.");
console.log(error);
});
}
function exitCallback() {
console.log("This is the callback function. It is executed when the Immersive Reader closes.");
}
請注意，所有文字都會有一個 lang 屬性，用於描述文字的語言。 此屬性可協助沈浸式閱讀程式提供相關的語言和文法功能。
建置並執行應用程式
Web 應用程式現在已經準備好了。 執行下列動作以啟動應用程式︰
npm start
請開啟瀏覽器，然後瀏覽至 http://localhost:3000。 您應該會看到：
啟動沈浸式閱讀程式
當您選取 [沈浸式閱讀程式] 按鈕時，會啟動沈浸式閱讀程式且其內容顯示在頁面上。
後續步驟
在本快速入門中，您將從頭開始建置 Android 應用程式，並且整合沈浸式閱讀程式。 本快速入門的完整工作範例可以在 GitHub 取得。
必要條件
- Azure 訂用帳戶。 您可以免費建立一個訂用帳戶。
- 為 Microsoft Entra 驗證所設定的沉浸式閱讀程式資源。 遵循這些指引來設定。 將工作階段輸出儲存到文字檔中以設定環境屬性。
- Git。
- Android Studio.
建立 Android 專案
在 Android Studio 中開始新專案。
![Android Studio 中 [啟動新專案] 選項的螢幕擷取畫面。](../media/android/java/android-studio-create-project.png)
在 [範本] 視窗，選取 [空的檢視活動]，然後選取 [下一步]。
![Android Studio 中 [範本] 視窗的螢幕擷取畫面。](../media/android/java/android-studio-empty-activity.png)
設定專案
將專案命名為 QuickstartJava，然後選取要儲存的位置。 選取 Java 作為程式設計語言，然後選取 [完成]。
![Android Studio 中 [設定專案] 視窗的螢幕擷取畫面。](../media/android/java/android-studio-configure-project.png)
設定資產和驗證
若要建立新的資產資料夾，請以滑鼠右鍵按一下 [應用程式]，然後從下拉式清單中選取 [資料夾] - >[資產資料夾]。
以滑鼠右鍵按一下 [資產]，然後選取 [新增] - >[檔案]。 將檔案命名為 env。
新增下列名稱和值，並提供適當的值。 請勿將此 env 檔案認可到原始檔控制，因為其中包含不應公開的機密資料。
TENANT_ID=<YOUR_TENANT_ID>
CLIENT_ID=<YOUR_CLIENT_ID>
CLIENT_SECRET=<YOUR_CLIENT_SECRET>
SUBDOMAIN=<YOUR_SUBDOMAIN>
重要
請記得不要公開張貼秘密。 在生產環境中，請使用安全的方式來儲存和存取您的認證，例如 Azure Key Vault。
新增相依性
將 build.gradle 檔案中的現有相依性取代為下列實作，讓 gson (JSON 剖析和序列化) 和 dotenv 可以參考在 env 檔案中定義的變數。 稍後在本快速入門實作活動時，您可能需要同步處理專案。
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.code.gson:gson:2.8.6'
implementation 'io.github.cdimascio:java-dotenv:5.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}
更新應用程式字串和配置資源
將 res/values/strings.xml 中的內容取代為要在應用程式中使用的下列字串。
<resources>
<!-- Copyright (c) Microsoft Corporation. All rights reserved. -->
<!-- Licensed under the MIT License. -->
<string name="app_name">ImmersiveReaderSDK</string>
<string name="geographyTitle">Geography</string>
<string name="geographyTextEn">The study of Earth's landforms is called physical geography. Landforms can be mountains and valleys. They can also be glaciers, lakes or rivers. Landforms are sometimes called physical features. It is important for students to know about the physical geography of Earth. The seasons, the atmosphere and all the natural processes of Earth affect where people are able to live. Geography is one of a combination of factors that people use to decide where they want to live. The physical features of a region are often rich in resources. Within a nation, mountain ranges become natural borders for settlement areas. In the U.S., major mountain ranges are the Sierra Nevada, the Rocky Mountains, and the Appalachians. Fresh water sources also influence where people settle. People need water to drink. They also need it for washing. Throughout history, people have settled near fresh water. Living near a water source helps ensure that people have the water they need. There was an added bonus, too. Water could be used as a travel route for people and goods. Many Americans live near popular water sources, such as the Mississippi River, the Colorado River and the Great Lakes.Mountains and deserts have been settled by fewer people than the plains areas. However, they have valuable resources of their own.</string>
<string name="geographyTextFr">L\'étude des reliefs de la Terre est appelée géographie physique. Les reliefs peuvent être des montagnes et des vallées. Il peut aussi s\'agira de glaciers, delacs ou de rivières. Les reliefs sont parfois appelés caractéristiques physiques. Il est important que les élèves connaissent la géographie physique de laTerre. Les saisons, l\'atmosphère et tous les processus naturels de la Terre affectent l\'endroit où les gens sont capables de vivre. La géographie est l\'un desfacteurs que les gens utilisent pour décider où ils veulent vivre. Les caractéristiques physiques d\'une région sont souvent riches en ressources. Àl\'intérieur d\'une nation, les chaînes de montagnes deviennent des frontières naturelles pour les zones de peuplement. Aux États-Unis, les principaleschaînes de montagnes sont la Sierra Nevada, les montagnes Rocheuses et les Appalaches.Les sources d\'eau douce influencent également l\'endroit où lesgens s\'installent. Les gens ont besoin d\'eau pour boire. Ils en ont aussi besoin pour se laver. Tout au long de l\'histoire, les gens se sont installés près del\'eau douce. Vivre près d\'une source d\'eau permet de s\'assurer que les gens ont l\'eau dont ils ont besoin. Il y avait un bonus supplémentaire, aussi. L\'eaupourrait être utilisée comme voie de voyage pour les personnes et les marchandises. Beaucoup d\'Américains vivent près des sources d\'eau populaires,telles que le fleuve Mississippi, le fleuve Colorado et les Grands Lacs.Mountains et les déserts ont été installés par moins de gens que les zones desplaines. Cependant, ils disposent de ressources précieuses.Les gens ont une réponse.</string>
<string name="immersiveReaderButtonText">Immersive Reader</string>
</resources>
將 res/layout/activity_main.xml 中的內容取代為要在應用程式中使用的下列 XML。 此 XML 是應用程式的 UI 版面配置。 如果您沒有在 activity_main.xml 檔案中看到程式碼，請在畫布上按下滑鼠右鍵，然後選取 [移至 XML]。
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) Microsoft Corporation. All rights reserved. -->
<!-- Licensed under the MIT License. -->
<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"
android:background="#FFFFFF"
tools:context=".MainActivity">
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#FFFFFF"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<TextView
android:id="@+id/Title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="48dp"
android:layout_marginTop="24dp"
android:layout_marginRight="48dp"
android:layout_marginBottom="24dp"
android:text="@string/geographyTitle"
android:textSize="24sp"
android:textStyle="bold" />
<ScrollView
android:id="@+id/ContentPane"
android:layout_width="match_parent"
android:layout_height="480dp"
android:layout_marginBottom="48dp"
android:clipToPadding="false"
android:fillViewport="false"
android:paddingLeft="48dp"
android:paddingRight="48dp"
android:scrollbarStyle="outsideInset"
android:visibility="visible"
tools:visibility="visible">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/Content1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00FFFFFF"
android:text="@string/geographyTextEn"
android:textSize="18sp" />
<TextView
android:id="@+id/Content2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00FFFFFF"
android:text="@string/geographyTextFr"
android:textSize="18sp" />
</LinearLayout>
</ScrollView>
<Button
android:id="@+id/LaunchImmersiveReaderButton"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:layout_marginBottom="80dp"
android:text="@string/immersiveReaderButtonText"
android:textAllCaps="false"
android:textSize="24sp"
android:visibility="visible"
tools:visibility="visible" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
新增 Web 檢視版面配置
在 res/layout/ 資料夾中建立新的版面配置資源檔並將其命名為 activity_immersive_reader。 然後使用下列 XML 來取代其內容。 此 XML 會新增供稍後步驟中 IRActivity Java 程式碼使用的 WebView 元件。 現在，若未定義且會造成錯誤。
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) Microsoft Corporation. All rights reserved. -->
<!-- Licensed under the MIT License. -->
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
tools:context=".IRActivity">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
設定應用程式 JAVA 程式碼
在 java/com.example.quickstartjava 資料夾中，存在現有的 MainActivity.java Java 類別檔案。 此資料夾是撰寫應用程式邏輯的位置。
以下列程式碼取代 MainActivity.java 內容。 程式碼中所參考的一些類別尚未存在，將會在稍後建立。
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
/**
* Creates a new activity, finds its content and the Immersive Reader button.
* When clicked, the app sends the content to the Immersive Reader SDK and
* launches the Immersive Reader.
*/
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final TextView irTitle = findViewById(R.id.Title);
final TextView irText1 = findViewById(R.id.Content1);
final TextView irText2 = findViewById(R.id.Content2);
final Button immersiveReaderButton = findViewById(R.id.LaunchImmersiveReaderButton);
immersiveReaderButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
List<ReadableTextChunk> readableTextChunks = new ArrayList<>();
readableTextChunks.add(new ReadableTextChunk(irText1.getText().toString(), "en"));
readableTextChunks.add(new ReadableTextChunk(irText2.getText().toString(), "fr"));
ReadableContent readableContent = new ReadableContent(irTitle.getText().toString(), readableTextChunks);
ImmersiveReader immersiveReader = new ImmersiveReader(MainActivity.this, new IRAuthenticator());
immersiveReader.read(readableContent);
}
});
}
}
我們將會在 java/com.example.quickstartjava/ 資料夾中再建立另外 16 個 Java 類別檔案。 這些類別將會由應用程式用來整合沈浸式閱讀程式 SDK。 每個新檔案在程式碼中都會有參考的一些類別尚未存在，將會在稍後建立。 建立所有類別之後，就不應該有 Null 參考錯誤。
以滑鼠右鍵按一下 java/com.example.quickstartjava/ 資料夾，然後選取 [新增]，接著選取 [Java 類別]，以建立新的 ImmersiveReader.java Java 類別。 輸入 ImmersiveReader。
對於每個建立的新 JAVA 類別檔案，使用這個與建立 JAVA 類別檔案相同的方法。
以下列程式碼取代 ImmersiveReader.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.app.Activity;
import android.content.Intent;
import androidx.annotation.Keep;
import java.lang.ref.WeakReference;
/**
* This is the client facing class for invoking the new Immersive Reader functionality.
* Usage:
* ImmersiveReader immersiveReader = new ImmersiveReader(Activity, IRAuthenticator);
* immersiveReader.read(ReadableTextChunk);
*/
@Keep
public class ImmersiveReader {
WeakReference<Activity> mActivityWR;
/**
* Interface to accept access token from client app.
* Note that it is client's responsibility to give a valid Access Token whenever getAccessToken() is requested.
* In favor of latency perf, there would be no further validation by Immersive Reader module except to ensure that the provided access token is non-empty string
*/
@Keep
public interface IAuthenticator {
String getAccessToken();
}
public ImmersiveReader(Activity activity, IAuthenticator authenticator) {
mActivityWR = new WeakReference<>(activity);
IRDataHolder.getInstance().setAuthenticator(authenticator);
}
public ImmersiveReader(Activity activity) {
this(activity, null);
}
/**
* Launches a new activity to speak the content as described by ReadableContent object.
*
* @param dataToRead - Content to be read
* @return IRError - IRError, with following error codes:
* a) Error.NONE in case of successful launch of Immersive Reader
* b) Error.INVALID_ACCESS_TOKEN in case of empty access token
* c) Error.INVALID_STATE in case of empty activity
* d) Error.INVALID_CONTENT in case of empty list of text chunks
*/
public IRError read(ReadableContent dataToRead) {
Activity activity = mActivityWR.get();
if (activity == null) {
return new IRError(Error.INVALID_STATE, "Client activity is null");
}
if (dataToRead == null || dataToRead.getTextChunks().size() == 0) {
return new IRError(Error.INVALID_CONTENT, "Readable Text Chunks not passed to Immersive Reader");
}
IRDataHolder.getInstance().setContentToRead(dataToRead);
Intent intent = new Intent(mActivityWR.get(), IRActivity.class);
activity.startActivity(intent);
return new IRError(Error.NONE, "Immersive Reader launched");
}
}
建立新的 IRActivity.java Java 類別檔案。
以下列程式碼取代 IRActivity.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.app.Activity;
import android.content.Intent;
import androidx.annotation.Keep;
import java.lang.ref.WeakReference;
/**
* This is the client facing class for invoking the new Immersive Reader functionality.
* Usage:
* ImmersiveReader immersiveReader = new ImmersiveReader(Activity, IRAuthenticator);
* immersiveReader.read(ReadableTextChunk);
*/
@Keep
public class ImmersiveReader {
WeakReference<Activity> mActivityWR;
/**
* Interface to accept access token from client app.
* Note that it is the client's responsibility to give a valid Access Token whenever getAccessToken() is requested.
* In favor of latency perf, there would be no further validation by Immersive Reader module except to ensure that the provided access token is non-empty string.
*/
@Keep
public interface IAuthenticator {
String getAccessToken();
}
public ImmersiveReader(Activity activity, IAuthenticator authenticator) {
mActivityWR = new WeakReference<>(activity);
IRDataHolder.getInstance().setAuthenticator(authenticator);
}
public ImmersiveReader(Activity activity) {
this(activity, null);
}
/**
* Launches a new activity to speak the content as described by ReadableContent object.
*
* @param dataToRead - Content to be read
* @return IRError - IRError, with following error codes:
* a) Error.NONE in case of successful launch of Immersive Reader
* b) Error.INVALID_ACCESS_TOKEN in case of empty access token.
* c) Error.INVALID_STATE in case of empty activity
* d) Error.INVALID_CONTENT in case of empty list of text chunks
*/
public IRError read(ReadableContent dataToRead) {
Activity activity = mActivityWR.get();
if (activity == null) {
return new IRError(Error.INVALID_STATE, "Client activity is null");
}
if (dataToRead == null || dataToRead.getTextChunks().size() == 0) {
return new IRError(Error.INVALID_CONTENT, "Readable Text Chunks not passed to Immersive Reader");
}
IRDataHolder.getInstance().setContentToRead(dataToRead);
Intent intent = new Intent(mActivityWR.get(), IRActivity.class);
activity.startActivity(intent);
return new IRError(Error.NONE, "Immersive Reader launched");
}
}
建立新的 IRError.java Java 類別檔案。
以下列程式碼取代 IRError.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.os.Parcel;
import android.os.Parcelable;
import androidx.annotation.Keep;
/**
* Shared error handling of the app.
*/
@Keep
public class IRError implements Parcelable {
private int errorId;
private String errorMessage = "";
public String getErrorMessage() {
return errorMessage;
}
public void setErrorMessage(String errorMessage) {
this.errorMessage = errorMessage;
}
public int getErrorId() {
return errorId;
}
public void setErrorId(int errorId) {
this.errorId = errorId;
}
public IRError(int errorId, String errorMessage) {
this.errorId = errorId;
this.errorMessage = errorMessage;
}
// parcelable
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeInt(this.errorId);
out.writeString(this.errorMessage);
}
public static final Creator<IRError> CREATOR
= new Creator<IRError>() {
public IRError createFromParcel(Parcel in) {
return new IRError(in);
}
public IRError[] newArray(int size) {
return new IRError[size];
}
};
private IRError(Parcel in) {
this.errorId = in.readInt();
this.errorMessage = in.readString();
}
}
建立新的 Error.java JAVA 類別檔案。
以下列程式碼取代 Error.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
/**
* Adds some default error status codes.
*/
@Keep
public class Error {
public static final int NONE = 1000;
public static final int INVALID_ACCESS_TOKEN = 8001;
public static final int INVALID_STATE = 8002;
public static final int INVALID_CONTENT = 8003;
}
建立新的 ReadableContent.java JAVA 類別檔案。
以下列程式碼取代 ReadableContent.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
import java.util.List;
/**
* Content data to be sent to the Immersive Reader SDK
*/
@Keep
public class ReadableContent {
private String mTitle;
private List<ReadableTextChunk> mTextChunks;
public ReadableContent(String title, List<ReadableTextChunk> textChunks) {
this.mTitle = title;
this.mTextChunks = textChunks;
}
public String getTitle() {
return mTitle;
}
public List<ReadableTextChunk> getTextChunks() {
return mTextChunks;
}
}
建立新的 ReadableTextChunk.java JAVA 類別檔案。
以下列程式碼取代 ReadableTextChunk.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
import androidx.annotation.Keep;
/**
* Content sent to the Immersive Reader SDK may be separated into chunks so that there may be
* different types of content sent in the same document. This includes content of different
* languages, math content, et cetera.
*/
@Keep
public class ReadableTextChunk {
public String mText;
public String mLocale;
public ReadableTextChunk(String text, String locale) {
this.mText = text;
this.mLocale = locale;
}
}
建立新的 IRDataHolder.java JAVA 類別檔案。
以下列程式碼取代 IRDataHolder.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
/**
* A thin singleton class that is used to hold the Client's IAuthenticator's implementation and the Content to be read.
* This is required for two reasons:
* 1) As per Android guidelines, data being passed via intent should be limited to a few KBs. Alternative is to use Singleton holder classes like this one.
* 2) We need a way to make callbacks survive app configuration changes and killed in background scenarios.
*/
@Keep
public class IRDataHolder {
private static IRDataHolder mInstance = null;
private ReadableContent mActiveContent = null;
private ImmersiveReader.IAuthenticator mAuthenticator = null;
public static IRDataHolder getInstance() {
if (mInstance == null) {
synchronized (IRDataHolder.class) {
if (mInstance == null) {
mInstance = new IRDataHolder();
}
}
}
return mInstance;
}
public void setContentToRead(ReadableContent content) {
mActiveContent = content;
}
public ReadableContent getContentToRead() {
return mActiveContent;
}
public ImmersiveReader.IAuthenticator getAuthenticator() {
return mAuthenticator;
}
public void setAuthenticator(ImmersiveReader.IAuthenticator accessTokenProvider) {
this.mAuthenticator = accessTokenProvider;
}
public void clearContent() {
mActiveContent = null;
}
}
建立新的 IRAuthenticator.java JAVA 類別檔案。
以下列程式碼取代 IRAuthenticator.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.text.TextUtils;
import android.util.Log;
import org.json.JSONException;
import org.json.JSONObject;
import io.github.cdimascio.dotenv.Dotenv;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import static java.net.HttpURLConnection.HTTP_OK;
// This sample app uses the Dotenv. It's a module that loads environment variables from a .env file to better manage secrets.
// https://github.com/cdimascio/java-dotenv
// Be sure to add a "env" file to the /assets folder.
// Instead of '.env', use 'env'.
public class IRAuthenticator implements ImmersiveReader.IAuthenticator {
private static final String LOG_TAG = "IRAuthenticator";
Dotenv dotEnv = Dotenv.configure()
.directory("/assets")
.filename("env")
.ignoreIfMalformed()
.ignoreIfMissing()
.load();
@Override
public String getAccessToken() {
String clientId = dotEnv.get("CLIENT_ID");
String clientSecret = dotEnv.get("CLIENT_SECRET");
String tenantId = dotEnv.get("TENANT_ID");
String accessToken = null;
try {
StringBuilder urlStringBuilder = new StringBuilder();
urlStringBuilder.append("https://login.windows.net/");
urlStringBuilder.append(tenantId);
urlStringBuilder.append("/oauth2/token");
URL tokenUrl = new URL(urlStringBuilder.toString());
StringBuilder formStringBuilder = new StringBuilder();
formStringBuilder.append("grant_type=client_credentials&resource=https://cognitiveservices.azure.com/&client_id=");
formStringBuilder.append(clientId);
formStringBuilder.append("&client_secret=");
formStringBuilder.append(clientSecret);
String form = formStringBuilder.toString();
HttpURLConnection httpURLConnection = (HttpURLConnection) tokenUrl.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setRequestProperty("content-type", "application/x-www-form-urlencoded");
httpURLConnection.setDoOutput(true);
DataOutputStream dataOutputStream = new DataOutputStream(httpURLConnection.getOutputStream());
dataOutputStream.writeBytes(form);
dataOutputStream.flush();
dataOutputStream.close();
int responseCode = httpURLConnection.getResponseCode();
if (responseCode == HTTP_OK) {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));
StringBuffer response = new StringBuffer();
String line = bufferedReader.readLine();
while (!TextUtils.isEmpty(line)) {
response.append(line);
line = bufferedReader.readLine();
}
bufferedReader.close();
JSONObject accessTokenJson = new JSONObject(response.toString());
accessToken = accessTokenJson.getString("access_token");
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
// accessToken = Constants.ACCESS_TOKEN;
Log.i(LOG_TAG, "Accesstoken: " + accessToken);
return accessToken;
}
}
建立新的 IRLauncher.java JAVA 類別檔案。
以下列程式碼取代 IRLauncher.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.content.Context;
import android.os.Build;
import android.text.TextUtils;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.Callable;
import io.github.cdimascio.dotenv.Dotenv;
/**
* Responsible for setting up the web view with appropriate bridging between JavaScript and Java to launch the Immersive Reader url for reading the content.
*/
public class IRLauncher {
Dotenv dotEnv = Dotenv.configure()
.directory("/assets")
.filename("env")
.ignoreIfMalformed()
.ignoreIfMissing()
.load();
private WebView mWebView;
private Context mContext;
public final String SUBDOMAIN = dotEnv.get("SUBDOMAIN");
interface IRLaunchListener {
// Invoked in case of successful launch of Immersive Reader Activity. Note that content reading can still fail due to multiple reasons including expired access token.
void onSuccess();
// Invoked in case of empty access token or empty content request to be read
void onFailure(IRError error);
// Invoked when Immersive Reader is exiting (e.g.) user pressed back in the Immersive Reader experience
void onExit();
}
public IRLauncher(Context context, WebView webView) {
this.mContext = context;
this.mWebView = webView;
}
public void launch(final IRLaunchListener launchListener) {
AuthenticationTask authenticationTask = new AuthenticationTask();
AuthenticationTask.TaskParams params = authenticationTask.new TaskParams(IRDataHolder.getInstance().getAuthenticator(), new AuthenticationTask.ITaskListener() {
@Override
public void onAccessTokenObtained(String accessToken) {
// Basic validation for access token
if (TextUtils.isEmpty(accessToken)) {
launchListener.onFailure(new IRError(Error.INVALID_ACCESS_TOKEN, "Access token is empty"));
}
// Create list of chunks from data that was passed originally by the client and stored in the data holder
List<Chunk> chunkList = new ArrayList<>();
for (ReadableTextChunk textChunk : IRDataHolder.getInstance().getContentToRead().getTextChunks()) {
chunkList.add(new Chunk(textChunk.mText, textChunk.mLocale, "text/plain"));
}
Content content = new Content(IRDataHolder.getInstance().getContentToRead().getTitle(), chunkList);
Options options = new Options(new Callable<Void>() {
public Void call() {
launchListener.onExit();
return null;
}
}, "en", 0);
// Prepare the webview
prepareWebView(accessToken, content, options, launchListener);
mWebView.loadUrl("file:///android_asset/immersiveReader.html");
launchListener.onSuccess();
}
});
authenticationTask.setParams(params);
authenticationTask.execute();
}
private void prepareWebView(String accessToken, Content content, Options options, final IRLaunchListener launchListener) {
mWebView.getSettings().setAllowContentAccess(true);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setLoadsImagesAutomatically(true);
mWebView.getSettings().setLoadWithOverviewMode(true);
mWebView.getSettings().setUseWideViewPort(true);
mWebView.getSettings().setUserAgentString("Android");
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setAppCacheEnabled(false);
mWebView.getSettings().setSupportZoom(true);
mWebView.setInitialScale(1);
// Enable web view cookies
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
CookieManager.getInstance().setAcceptThirdPartyCookies(mWebView, true);
} else {
CookieManager.getInstance().setAcceptCookie(true);
}
final Date startPostMessageSentDurationInMs = new Date();
// Create the Message
final Message messageData = new Message(accessToken, SUBDOMAIN, content, 0, options);
// Set WebView Client
mWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
mWebView.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
Date endPostMessageSentDurationInMs = new Date();
long postMessageSentDurationInMs = endPostMessageSentDurationInMs.getTime() - startPostMessageSentDurationInMs.getTime();
// Updates launchToPostMessageSentDurationInMs
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
messageData.launchToPostMessageSentDurationInMs = Math.toIntExact(postMessageSentDurationInMs);
} else {
messageData.launchToPostMessageSentDurationInMs = 0;
}
GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
String messageJson = gson.toJson(messageData);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
StringBuilder scriptStringBuilder = new StringBuilder().append("handleLaunchImmersiveReader(").append(messageJson).append(")");
view.evaluateJavascript(scriptStringBuilder.toString(), null);
} else {
StringBuilder urlStringBuilder = new StringBuilder().append("javascript:handleLaunchImmersiveReader(").append(messageJson).append(")");
view.loadUrl(urlStringBuilder.toString());
}
mWebView.setVisibility(View.VISIBLE);
}
});
// Prepare and set the WebAppInterface to hear back from the JavaScript
WebAppInterface jsInterface = new WebAppInterface(new WebAppInterface.WebAppListener() {
@Override
public void onShowToast(String toast) {
Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
}
@Override
public void onImmersiveReaderExit() {
IRDataHolder.getInstance().clearContent();
mWebView.post(new Runnable() {
@Override
public void run() {
mWebView.clearHistory();
mWebView.clearCache(true);
mWebView.loadUrl("about:blank");
mWebView.onPause();
mWebView.removeAllViews();
mWebView.pauseTimers();
mWebView.destroy();
}
});
launchListener.onExit();
}
});
mWebView.addJavascriptInterface(jsInterface, "Android");
}
}
建立新的 IRStore.java JAVA 類別檔案。
以下列程式碼取代 IRStore.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
@Keep
public final class IRStore {
@Keep
public final static class Output {
public final static String ERROR = "Error";
}
}
建立新的 AuthenticationTask.java JAVA 類別檔案。
以下列程式碼取代 AuthenticationTask.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import android.os.AsyncTask;
/**
* Async task to request the client for the access token in background thread.
*/
public class AuthenticationTask extends AsyncTask<Void, Void, String> {
private TaskParams mParams;
public interface ITaskListener {
void onAccessTokenObtained(String accessToken);
}
public class TaskParams {
ImmersiveReader.IAuthenticator mAccessTokenProvider;
ITaskListener mTaskListener;
public TaskParams(ImmersiveReader.IAuthenticator accessTokenProvider, ITaskListener taskListener) {
this.mAccessTokenProvider = accessTokenProvider;
this.mTaskListener = taskListener;
}
}
public void setParams(TaskParams mParams) {
this.mParams = mParams;
}
@Override
protected String doInBackground(Void... voids) {
return mParams.mAccessTokenProvider.getAccessToken();
}
@Override
protected void onPostExecute(String accessToken) {
super.onPostExecute(accessToken);
if (mParams.mTaskListener != null) {
mParams.mTaskListener.onAccessTokenObtained(accessToken);
}
}
}
建立新的 Chunk.java JAVA 類別檔案。
以下列程式碼取代 Chunk.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
/**
* The chunk object that will be sent to the Immersive Reader SDK.
* The content is a string of text, the lang is a string, e.g. 'll-cc',
* and the mimeType is also a string, e.g. 'text/plain'.
*/
@Keep
public class Chunk {
public String content;
public String lang;
public String mimeType;
public Chunk(String content, String lang, String mimeType) {
this.content = content;
this.lang = lang;
this.mimeType = mimeType;
}
}
建立新的 Content.java JAVA 類別檔案。
以下列程式碼取代 Content.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
import java.util.List;
/**
* The content object that will be sent to the Immersive Reader SDK.
* This object contains the title and a list of Chunk objects.
*/
@Keep
public class Content {
public String title;
public List<Chunk> chunks;
public Content(String title, List<Chunk> chunks) {
this.title = title;
this.chunks = chunks;
}
}
建立新的 Options.java JAVA 類別檔案。
以下列程式碼取代 Options.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
import java.util.concurrent.Callable;
import androidx.annotation.Keep;
/**
* The options object that will be sent to the Immersive Reader SDK.
*/
@Keep
public class Options {
public Callable<Void> onExit;
public String uiLang;
public Integer timeout;
public Options(Callable<Void> exitCallback, String uiLang, Integer timeout) {
this.onExit = exitCallback;
this.uiLang = uiLang;
this.timeout = timeout;
}
}
建立新的 Message.java JAVA 類別檔案。
以下列程式碼取代 Message.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
import androidx.annotation.Keep;
/**
* The message object that will be sent to the Immersive Reader SDK.
* This object contains the access token, sub domain, Content, and Options.
*/
@Keep
public class Message {
public String cogSvcsAccessToken;
public String cogSvcsSubdomain;
public Content request;
public Integer launchToPostMessageSentDurationInMs;
public Options options;
public Message(String cogSvcsAccessToken, String cogSvcsSubdomain, Content request, Integer launchToPostMessageSentDurationInMs, Options options) {
this.cogSvcsAccessToken = cogSvcsAccessToken;
this.cogSvcsSubdomain = cogSvcsSubdomain;
this.request = request;
this.launchToPostMessageSentDurationInMs = launchToPostMessageSentDurationInMs;
this.options = options;
}
}
建立新的 WebAppInterface.java JAVA 類別檔案。
以下列程式碼取代 WebAppInterface.java 內容：
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
package com.example.quickstartjava;
import androidx.annotation.Keep;
import android.webkit.JavascriptInterface;
/**
* JavaScript interface implementation passed to the WebView to enable talking between JavaScript and Java.
*/
@Keep
public class WebAppInterface {
public static WebAppListener mListener;
interface WebAppListener {
void onShowToast(String toast);
void onImmersiveReaderExit();
}
public WebAppInterface(WebAppListener listener) {
this.mListener = listener;
}
@JavascriptInterface
public void showToast(String toast) {
mListener.onShowToast(toast);
}
@JavascriptInterface
public void immersiveReaderExit() {
mListener.onImmersiveReaderExit();
}
}
將應用程式 HTML 新增至 Web 檢視
Web 檢視實作需要 HTML 才能正常運作。 以滑鼠右鍵按一下 /assets 資料夾，建立新檔案並將其命名為 immersiveReader.html。
新增下列 HTML 和 JavaScript。 此程式碼會將沈浸式閱讀程式 SDK 新增至應用程式，並將其用來透過我們所撰寫的應用程式程式碼來啟動沈浸式閱讀程式。
<!-- Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the MIT License. -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<script type="text/javascript" src="https://ircdname.azureedge.net/immersivereadersdk/immersive-reader-sdk.1.4.0.js"></script>
</head>
<body>
<script type="text/javascript">
function handleLaunchImmersiveReader(message) {
if (!message) {
Android.showToast('Message is null or undefined!');
} else {
// Learn more about chunk usage and supported MIME types https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#chunk
var data = {
title: message.request.title,
chunks: []
};
for (var chunkIndex = 0; chunkIndex < message.request.chunks.length; chunkIndex++) {
data.chunks.push({
content: message.request.chunks[chunkIndex].content,
lang: message.request.chunks[chunkIndex].lang,
mimeType: message.request.chunks[chunkIndex].mimeType
});
}
// Learn more about options https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#options
var options = {
onExit: exitCallback,
uiZIndex: 2000
};
// Use the JavaScript SDK to launch the Immersive Reader.
ImmersiveReader.launchAsync(message.cogSvcsAccessToken, message.cogSvcsSubdomain, data, options);
// A simple declarative function used to close the Immersive Reader WebView via @JavaScriptInterface
function exitCallback() {
Android.immersiveReaderExit();
}
}
}
</script>
</body>
</html>
設定應用程式權限
因為應用程式需要對沈浸式閱讀程式 SDK 進行網路呼叫才能運作，所以我們必須確保應用程式權限已設定為允許網路存取。 將 /manifests/AndroidManifest.xml 的內容取代為下列 XML：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.quickstartjava">
<uses-permission android:name="android.permission.INTERNET" />
<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">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".IRActivity"
android:multiprocess="true" />
</application>
</manifest>
執行應用程式
使用 Android Studio 在裝置模擬器上執行應用程式。 當您選取 [沈浸式閱讀程式] 時，會開啟具有應用程式內容的沈浸式閱讀程式。
後續步驟
在本快速入門中，您將從頭開始建置 Android 應用程式，並且整合沈浸式閱讀程式。 本快速入門的完整工作範例可以在 GitHub 取得。
必要條件
- Azure 訂用帳戶。 您可以免費建立一個訂用帳戶。
- 為 Microsoft Entra 驗證所設定的沉浸式閱讀程式資源。 遵循這些指引來設定。 將工作階段輸出儲存到文字檔中以設定環境屬性。
- Git。
- Android Studio.
建立 Android 專案
在 Android Studio 中開始新專案。
![Android Studio 中 [啟動新專案] 選項的螢幕擷取畫面。](../media/android/kotlin/android-studio-create-project.png)
在 [範本] 視窗，選取 [空的檢視活動]，然後選取 [下一步]。
![Android Studio 中 [範本] 視窗的螢幕擷取畫面。](../media/android/kotlin/android-studio-empty-activity.png)
設定專案
將專案命名為 QuickstartKotlin，然後選取要儲存的位置。 選取 Kotlin 作為程式設計語言，然後選取 [完成]。
![Android Studio 中 [設定專案] 視窗的螢幕擷取畫面。](../media/android/kotlin/android-studio-configure-project.png)
設定資產和驗證
若要建立新的資產資料夾，請以滑鼠右鍵按一下 [應用程式]，然後從下拉式清單中選取 [資料夾] - >[資產資料夾]。
以滑鼠右鍵按一下 [資產]，然後選取 [新增] - >[檔案]。 將檔案命名為 env。
新增下列名稱和值，並提供適當的值。 請勿將此 env 檔案認可到原始檔控制，因為其中包含不應公開的機密資料。
TENANT_ID=<YOUR_TENANT_ID>
CLIENT_ID=<YOUR_CLIENT_ID>
CLIENT_SECRET=<YOUR_CLIENT_SECRET>
SUBDOMAIN=<YOUR_SUBDOMAIN>
重要
請記得不要公開張貼秘密。 在生產環境中，請使用安全的方式來儲存和存取您的認證，例如 Azure Key Vault。
新增相依性
將 build.gradle 檔案中的現有相依性取代為下列實作，讓協同程式 (非同步程式設計)、gson (JSON 剖析和序列化) 和 dotenv 可以參考在 env 檔案中定義的變數。 在本快速入門稍後的步驟中實作 MainActivity.kt 時，您可能需要再次同步處理專案。
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.core:core-ktx:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.1.1"
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1"
implementation 'com.google.code.gson:gson:2.8.6'
implementation 'io.github.cdimascio:java-dotenv:5.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
}
更新應用程式字串和配置資源
將 res/values/strings.xml 中的內容取代為要在應用程式中使用的下列字串。
<resources>
<!-- Copyright (c) Microsoft Corporation. All rights reserved. -->
<!-- Licensed under the MIT License. -->
<string name="app_name">ImmersiveReaderSDK</string>
<string name="geographyTitle">Geography</string>
<string name="geographyTextEn">The study of Earth's landforms is called physical geography. Landforms can be mountains and valleys. They can also be glaciers, lakes or rivers. Landforms are sometimes called physical features. It is important for students to know about the physical geography of Earth. The seasons, the atmosphere and all the natural processes of Earth affect where people are able to live. Geography is one of a combination of factors that people use to decide where they want to live.The physical features of a region are often rich in resources. Within a nation, mountain ranges become natural borders for settlement areas. In the U.S., major mountain ranges are the Sierra Nevada, the Rocky Mountains, and the Appalachians. Fresh water sources also influence where people settle. People need water to drink. They also need it for washing. Throughout history, people have settled near fresh water. Living near a water source helps ensure that people have the water they need. There was an added bonus, too. Water could be used as a travel route for people and goods. Many Americans live near popular water sources, such as the Mississippi River, the Colorado River and the Great Lakes.Mountains and deserts have been settled by fewer people than the plains areas. However, they have valuable resources of their own.</string>
<string name="geographyTextFr">L\'étude des reliefs de la Terre est appelée géographie physique. Les reliefs peuvent être des montagnes et des vallées. Il peut aussi s\'agira de glaciers, delacs ou de rivières. Les reliefs sont parfois appelés caractéristiques physiques. Il est important que les élèves connaissent la géographie physique de laTerre. Les saisons, l\'atmosphère et tous les processus naturels de la Terre affectent l\'endroit où les gens sont capables de vivre. La géographie est l\'un desfacteurs que les gens utilisent pour décider où ils veulent vivre. Les caractéristiques physiques d\'une région sont souvent riches en ressources. Àl\'intérieur d\'une nation, les chaînes de montagnes deviennent des frontières naturelles pour les zones de peuplement. Aux États-Unis, les principaleschaînes de montagnes sont la Sierra Nevada, les montagnes Rocheuses et les Appalaches.Les sources d\'eau douce influencent également l\'endroit où lesgens s\'installent. Les gens ont besoin d\'eau pour boire. Ils en ont aussi besoin pour se laver. Tout au long de l\'histoire, les gens se sont installés près del\'eau douce. Vivre près d\'une source d\'eau permet de s\'assurer que les gens ont l\'eau dont ils ont besoin. Il y avait un bonus supplémentaire, aussi. L\'eaupourrait être utilisée comme voie de voyage pour les personnes et les marchandises. Beaucoup d\'Américains vivent près des sources d\'eau populaires,telles que le fleuve Mississippi, le fleuve Colorado et les Grands Lacs.Mountains et les déserts ont été installés par moins de gens que les zones desplaines. Cependant, ils disposent de ressources précieuses.Les gens ont une réponse.</string>
<string name="immersiveReaderButtonText">Immersive Reader</string>
</resources>
將 res/layout/activity_main.xml 中的內容取代為要在應用程式中使用的下列 XML。 此 XML 是應用程式的 UI 版面配置。 如果您沒有在 activity_main.xml 檔案中看到程式碼，請在畫布上按下滑鼠右鍵，然後選取 [移至 XML]。
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) Microsoft Corporation. All rights reserved. -->
<!-- Licensed under the MIT License. -->
<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"
android:background="#FFFFFF"
tools:context=".MainActivity">
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#FFFFFF"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<TextView
android:id="@+id/Title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="48dp"
android:layout_marginTop="24dp"
android:layout_marginRight="48dp"
android:layout_marginBottom="24dp"
android:text="@string/geographyTitle"
android:textSize="24sp"
android:textStyle="bold" />
<ScrollView
android:id="@+id/ContentPane"
android:layout_width="match_parent"
android:layout_height="480dp"
android:layout_marginBottom="48dp"
android:clipToPadding="false"
android:fillViewport="false"
android:paddingLeft="48dp"
android:paddingRight="48dp"
android:scrollbarStyle="outsideInset"
android:visibility="visible"
tools:visibility="visible">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/Content1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00FFFFFF"
android:text="@string/geographyTextEn"
android:textSize="18sp" />
<TextView
android:id="@+id/Content2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00FFFFFF"
android:text="@string/geographyTextFr"
android:textSize="18sp" />
</LinearLayout>
</ScrollView>
<Button
android:id="@+id/LaunchImmersiveReaderButton"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:layout_marginBottom="80dp"
android:text="@string/immersiveReaderButtonText"
android:textAllCaps="false"
android:textSize="24sp"
android:visibility="visible"
tools:visibility="visible" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
設定應用程式 Kotlin 程式碼 JavaScript 介面
在 kotlin+java/com.example.quickstartkotlin/ 資料夾中建立新的 Kotlin 類別，並且將其命名為 WebAppInterface。 然後將下列程式碼新增至其中。 此程式碼可讓應用程式與 HTML (會在稍後的步驟中新增) 中的 JavaScript 函式連結。
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
package com.example.quickstartkotlin
import android.content.Context
import android.webkit.JavascriptInterface
import android.webkit.WebView
import android.widget.LinearLayout
import android.widget.Toast
class WebAppInterface(private val mContext: Context, var parentLayout: LinearLayout, var webView: WebView) {
// Show a toast from html.
@JavascriptInterface
fun showToast(toast: String) {
Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show()
}
// Exit the Immersive Reader.
@JavascriptInterface
fun immersiveReaderExit() {
webView.post(Runnable { destroyWebView(parentLayout, webView) })
// Any additional functionality may be added here.
Toast.makeText(mContext, "The Immersive Reader has been closed!", Toast.LENGTH_SHORT).show()
}
// Disposes of the WebView when the back arrow is tapped.
private fun destroyWebView(parentLayout: LinearLayout, webView: WebView) {
// Removes the WebView from its parent view before doing anything.
parentLayout.removeView(webView)
// Cleans things up before destroying the WebView.
webView.clearHistory()
webView.clearCache(true)
webView.loadUrl("about:blank")
webView.onPause()
webView.removeAllViews()
webView.pauseTimers()
webView.destroy()
}
}
設定應用程式 Kotlin 程式碼主要活動
在 kotlin+java/com.example.quickstartkotlin/ 資料夾中，存在現有的 MainActivity.kt Kotlin 類別檔案。 此檔案是撰寫應用程式邏輯的位置。 以下列程式碼取代其內容。
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
package com.example.quickstartkotlin
import android.app.Activity
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.webkit.CookieManager
import android.webkit.WebView
import android.widget.Button
import android.webkit.WebViewClient
import android.widget.LinearLayout
import android.widget.TextView
import com.google.gson.*
import io.github.cdimascio.dotenv.dotenv
import java.io.IOException
import java.io.*
import java.net.HttpURLConnection
import java.net.HttpURLConnection.HTTP_OK
import java.net.URL
import kotlinx.coroutines.*
import org.json.JSONObject
import java.util.*
// This sample app uses the Dotenv. It's a module that loads environment variables from a .env file to better manage secrets.
// https://github.com/cdimascio/java-dotenv
// Be sure to add a "env" file to the /assets folder.
// Instead of '.env', use 'env'.
class MainActivity : AppCompatActivity() {
private val dotEnv = dotenv {
directory = "/assets"
filename = "env"
ignoreIfMalformed = true
ignoreIfMissing = true
}
private lateinit var contextualWebView: WebView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
this.supportActionBar!!.hide()
setContentView(R.layout.activity_main)
val immersiveReaderButton = findViewById<Button>(R.id.LaunchImmersiveReaderButton)
immersiveReaderButton.setOnClickListener { GlobalScope.launch { handleLoadImmersiveReaderWebView() } }
}
// Assigns values to the objects sent to the Immersive Reader SDK,
// acquires the token and authorizes the app, then launches
// the Web View to get the response and load the Immersive Reader
// when the button is clicked in HTML.
private suspend fun handleLoadImmersiveReaderWebView() {
val exampleActivity = this
val subdomain = dotEnv["SUBDOMAIN"]
val irTitle = findViewById<TextView>(R.id.Title)
val irText1 = findViewById<TextView>(R.id.Content1)
val irText2 = findViewById<TextView>(R.id.Content2)
// The content of the request that's shown in the Immersive Reader.
// This basic example contains chunks of two different languages.
val chunk1 = Chunk()
chunk1.content = irText1.text.toString()
chunk1.lang = "en"
chunk1.mimeType = "text/plain"
val chunk2 = Chunk()
chunk2.content = irText2.text.toString()
chunk2.lang = "fr"
chunk2.mimeType = "text/plain"
val chunks = ArrayList<Chunk>()
chunks.add(chunk1)
chunks.add(chunk2)
val content = Content()
content.title = irTitle.text.toString()
content.chunks = chunks
// Options may be assigned values here (e.g. options.uiLang = "en").
val options = Options()
var token: String
runBlocking{
val resp = async { getImmersiveReaderTokenAsync() }
token = resp.await()
val jsonResp = JSONObject(token)
loadImmersiveReaderWebView(exampleActivity, jsonResp.getString("access_token"), subdomain, content, options)
}
}
// The next two functions get the token from the Immersive Reader SDK
// and authorize the app.
private suspend fun getImmersiveReaderTokenAsync(): String {
return getToken()
}
@Throws(IOException::class)
fun getToken(): String {
val clientId = dotEnv["CLIENT_ID"]
val clientSecret = dotEnv["CLIENT_SECRET"]
val tenantId = dotEnv["TENANT_ID"]
val tokenUrl = URL("https://login.windows.net/$tenantId/oauth2/token")
val form = "grant_type=client_credentials&resource=https://cognitiveservices.azure.com/&client_id=$clientId&client_secret=$clientSecret"
val connection = tokenUrl.openConnection() as HttpURLConnection
connection.requestMethod = "POST"
connection.setRequestProperty("content-type", "application/x-www-form-urlencoded")
connection.doOutput = true
val writer = DataOutputStream(connection.outputStream)
writer.writeBytes(form)
writer.flush()
writer.close()
val responseCode = connection.responseCode
if (responseCode == HTTP_OK) {
val readerIn = BufferedReader(InputStreamReader(connection.inputStream))
var inputLine = readerIn.readLine()
val response = StringBuffer()
do {
response.append(inputLine)
} while (inputLine.length < 0)
readerIn.close()
// Return token
return response.toString()
} else {
val responseError = Error(code = "BadRequest", message = "There was an error getting the token.")
throw IOException(responseError.toString())
}
}
// To be assigned values and sent to the Immersive Reader SDK
class Chunk(var content: String? = null,
var lang: String? = null,
var mimeType: String? = null)
class Content(var title: String? = null,
var chunks: List<Chunk>? = null)
class Message(var cogSvcsAccessToken: String? = null,
var cogSvcsSubdomain: String? = null,
var content: Content? = null,
var launchToPostMessageSentDurationInMs: Int? = null,
var options: Options? = null)
// Only includes Immersive Reader options relevant to Android apps.
// For a complete list, visit https://learn.microsoft.com/azure/ai-services/immersive-reader/reference
class Options(var uiLang: String? = null, // Language of the UI, e.g. en, es-ES (optional). Defaults to browser language if not specified.
var timeout: Int? = null, // Duration (in milliseconds) before launchAsync fails with a timeout error (default is 15000 ms).
var uiZIndex: Int? = null, // Z-index of the iframe that will be created (default is 1000)
var onExit: (() -> Any)? = null, // Executes a callback function when the Immersive Reader exits
var customDomain: String? = null, // Reserved for internal use. Custom domain where the Immersive Reader webapp is hosted (default is null).
var allowFullscreen: Boolean? = null, // The ability to toggle fullscreen (default is true).
var hideExitButton: Boolean? = null // Whether or not to hide the Immersive Reader's exit button arrow (default is false). This should only be true if there is an alternative mechanism provided to exit the Immersive Reader (e.g a mobile toolbar's back arrow).
)
class Error(var code: String? = null,
var message: String? = null)
// A custom Web View component that launches inside the app
@Throws(IOException::class)
fun loadImmersiveReaderWebView(
exampleActivity: Activity,
token: String,
subdomain: String?,
content: Content,
options: Options
) {
val startPostMessageSentDurationInMs = Date()
// Populate the message
val messageData = Message()
messageData.cogSvcsAccessToken = token
messageData.cogSvcsSubdomain = subdomain
messageData.content = content
messageData.options = options
GlobalScope.launch {
withContext(Dispatchers.Main) {
contextualWebView = WebView(exampleActivity)
val parentLayout = findViewById<LinearLayout>(R.id.linearLayout)
val contextualWebViewSettings = contextualWebView.settings
contextualWebViewSettings.allowContentAccess = true
contextualWebViewSettings.builtInZoomControls = true
contextualWebViewSettings.javaScriptEnabled = true
contextualWebViewSettings.loadsImagesAutomatically = true
contextualWebViewSettings.loadWithOverviewMode = true
contextualWebViewSettings.useWideViewPort = true
contextualWebViewSettings.userAgentString = "Android"
contextualWebViewSettings.domStorageEnabled = true
contextualWebViewSettings.setAppCacheEnabled(false)
contextualWebViewSettings.setSupportZoom(true)
contextualWebView.setInitialScale(1)
// Enables WebView Cookies
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
CookieManager.getInstance().setAcceptThirdPartyCookies(contextualWebView, true)
} else {
CookieManager.getInstance().setAcceptCookie(true)
}
val contextualWebViewLayout = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT)
parentLayout.addView(contextualWebView, 0, contextualWebViewLayout)
// This is required to launch the WebView *inside* the host application.
contextualWebView.webViewClient = object : WebViewClient() {
override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
view.loadUrl(url)
return true
}
// Send message JSON object to Immersive Reader html
override fun onPageFinished(view: WebView, url: String) {
val endPostMessageSentDurationInMs = Date()
val postMessageSentDurationInMs = (endPostMessageSentDurationInMs.time - startPostMessageSentDurationInMs.time).toInt()
// Updates launchToPostMessageSentDurationInMs
messageData.launchToPostMessageSentDurationInMs = postMessageSentDurationInMs
// Serializes message data class to JSON
val gson = Gson()
val message = gson.toJson(messageData)
// Calls the handleLaunchImmersiveReader function in HTML
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
view.evaluateJavascript("handleLaunchImmersiveReader($message)", null)
} else {
view.loadUrl("javascript:handleLaunchImmersiveReader($message)")
}
// Sets the visibility of the WebView after the function has been called.
view.visibility = WebView.VISIBLE
}
}
// This is where the WebAppInterface Class is used.
// Affords a way for JavaScript to work with the app directly from
// the Web View's HTML.
val jsInterface = WebAppInterface(exampleActivity, parentLayout, contextualWebView)
contextualWebView.addJavascriptInterface(jsInterface, "Android")
contextualWebView.loadUrl("file:///android_asset/immersiveReader.html")
}
}
}
}
您可能需要再次同步處理專案。
將應用程式 HTML 新增至 Web 檢視
Web 檢視實作需要 HTML 才能正常運作。 以滑鼠右鍵按一下 /assets 資料夾，建立新檔案並將其命名為 immersiveReader.html。
新增下列 HTML 和 JavaScript。 此程式碼會將沈浸式閱讀程式 SDK 新增至應用程式，並將其用來透過我們所撰寫的應用程式程式碼來啟動沈浸式閱讀程式。
<!-- Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the MIT License. -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<script type="text/javascript" src="https://ircdname.azureedge.net/immersivereadersdk/immersive-reader-sdk.1.4.0.js"></script>
</head>
<body>
<script type="text/javascript">
function handleLaunchImmersiveReader(message) {
if (!message) {
Android.showToast('Message is null or undefined!');
} else {
// Learn more about chunk usage and supported MIME types https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#chunk
var data = {
title: message.content.title,
chunks: message.content.chunks
};
// A simple declarative function used to close the Immersive Reader WebView via @JavaScriptInterface
var exitCallback = function() {
Android.immersiveReaderExit();
}
// Learn more about options https://learn.microsoft.com/azure/ai-services/immersive-reader/reference#options
var options = {
onExit: exitCallback,
uiZIndex: 2000
};
// Use the JavaScript SDK to launch the Immersive Reader.
ImmersiveReader.launchAsync(message.cogSvcsAccessToken, message.cogSvcsSubdomain, data, options);
}
}
</script>
</body>
</html>
設定應用程式權限
因為應用程式需要對沈浸式閱讀程式 SDK 進行網路呼叫才能運作，所以我們必須確保應用程式權限已設定為允許網路存取。 將 /manifests/AndroidManifest.xml 的內容取代為下列 XML。
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.quickstartkotlin">
<uses-permission android:name="android.permission.INTERNET" />
<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">
<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>
執行應用程式
使用 Android Studio 在裝置模擬器上執行應用程式。 當您選取 [沈浸式閱讀程式] 時，會開啟具有應用程式內容的沈浸式閱讀程式。
後續步驟
在本快速入門中，您將從頭開始建置 iOS 應用程式，並且整合沈浸式閱讀程式。 本快速入門的完整工作範例可以在 GitHub 取得。
必要條件
- Azure 訂用帳戶。 您可以免費建立一個訂用帳戶。
- 為 Microsoft Entra 驗證所設定的沉浸式閱讀程式資源。 遵循這些指引來設定。 將工作階段輸出儲存到文字檔中以設定環境屬性。
- macOS 和 Xcode。
建立 Xcode 專案
在 Xcode 中建立新的專案。
選擇 [單一檢視應用程式]。
設定驗證
在頂端功能表中，選取 [產品 > 配置 > 編輯配置...]。
在 [執行] 檢視中，選取 [引數] 索引標籤。
在 [環境變數] 區段中，新增下列名稱和值，並使用您在建立沈浸式閱讀程式資源時提供的值。
重要
請記得不要公開張貼秘密。 在生產環境中，請使用安全的方式來儲存和存取您的認證，例如 Azure Key Vault。
TENANT_ID=<YOUR_TENANT_ID>
CLIENT_ID=<YOUR_CLIENT_ID>
CLIENT_SECRET<YOUR_CLIENT_SECRET>
SUBDOMAIN=<YOUR_SUBDOMAIN>
將應用程式設定為在沒有分鏡腳本的情況下執行
開啟 AppDelegate.swift，並將檔案取代為下列程式碼。
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var navigationController: UINavigationController?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
if let window = window {
let mainViewController = LaunchViewController()
navigationController = UINavigationController(rootViewController: mainViewController)
window.rootViewController = navigationController
window.makeKeyAndVisible()
}
return true
}
func applicationWillResignActive(_ application: UIApplication) {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
}
func applicationDidEnterBackground(_ application: UIApplication) {
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}
func applicationWillEnterForeground(_ application: UIApplication) {
// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}
func applicationDidBecomeActive(_ application: UIApplication) {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}
func applicationWillTerminate(_ application: UIApplication) {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
}
建立「檢視控制器」，並新增範例內容
將 ViewController.swift 重新命名為 LaunchViewController.swift，並將檔案取代為下列程式碼。
import UIKit
class LaunchViewController: UIViewController {
private var tenantId = ProcessInfo.processInfo.environment["TENANT_ID"]
private var clientId = ProcessInfo.processInfo.environment["CLIENT_ID"]
private var clientSecret = ProcessInfo.processInfo.environment["CLIENT_SECRET"]
private var subdomain = ProcessInfo.processInfo.environment["SUBDOMAIN"]
private var launchButton: UIButton!
private var titleText: UILabel!
private var bodyText: UILabel!
private var sampleContent: Content!
private var sampleChunk: Chunk!
private var sampleOptions: Options!
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
titleText = UILabel()
titleText.text = "Geography"
titleText.font = UIFont.boldSystemFont(ofSize: 30)
titleText.lineBreakMode = .byWordWrapping
titleText.numberOfLines = 0
view.addSubview(titleText)
bodyText = UILabel()
bodyText.text = "The study of Earth's landforms is called physical geography. Landforms can be mountains and valleys. They can also be glaciers, lakes or rivers. Landforms are sometimes called physical features. It is important for students to know about the physical geography of Earth. The seasons, the atmosphere and all the natural processes of Earth affect where people are able to live. Geography is one of a combination of factors that people use to decide where they want to live.The physical features of a region are often rich in resources. Within a nation, mountain ranges become natural borders for settlement areas. In the U.S., major mountain ranges are the Sierra Nevada, the Rocky Mountains, and the Appalachians.Fresh water sources also influence where people settle. People need water to drink. They also need it for washing. Throughout history, people have settled near fresh water. Living near a water source helps ensure that people have the water they need. There was an added bonus, too. Water could be used as a travel route for people and goods. Many Americans live near popular water sources, such as the Mississippi River, the Colorado River and the Great Lakes.Mountains and deserts have been settled by fewer people than the plains areas. However, they have valuable resources of their own."
bodyText.lineBreakMode = .byWordWrapping
bodyText.numberOfLines = 0
let screenSize = self.view.frame.height
if screenSize <= 667 {
// Font size for smaller iPhones.
bodyText.font = bodyText.font.withSize(14)
} else if screenSize <= 812 {
// Font size for medium iPhones.
bodyText.font = bodyText.font.withSize(15)
} else if screenSize <= 896 {
// Font size for larger iPhones.
bodyText.font = bodyText.font.withSize(17)
} else if screenSize <= 1024 {
// Font size for iPads.
bodyText.font = bodyText.font.withSize(25)
} else {
// Font size for large iPads.
bodyText.font = bodyText.font.withSize(28)
}
view.addSubview(bodyText)
launchButton = UIButton()
launchButton.backgroundColor = .darkGray
launchButton.contentEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
launchButton.setTitleColor(.white, for: .normal)
launchButton.setTitle("Immersive Reader", for: .normal)
launchButton.addTarget(self, action: #selector(launchImmersiveReaderButton(sender:)), for: .touchUpInside)
view.addSubview(launchButton)
let layoutGuide = view.safeAreaLayoutGuide
titleText.translatesAutoresizingMaskIntoConstraints = false
titleText.topAnchor.constraint(equalTo: layoutGuide.topAnchor, constant: 20).isActive = true
titleText.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor, constant: 20).isActive = true
titleText.trailingAnchor.constraint(equalTo: layoutGuide.trailingAnchor, constant: -20).isActive = true
bodyText.translatesAutoresizingMaskIntoConstraints = false
bodyText.topAnchor.constraint(equalTo: titleText.bottomAnchor, constant: 15).isActive = true
bodyText.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor, constant: 20).isActive = true
bodyText.trailingAnchor.constraint(equalTo: layoutGuide.trailingAnchor, constant: -20).isActive = true
launchButton.translatesAutoresizingMaskIntoConstraints = false
launchButton.widthAnchor.constraint(equalToConstant: 200).isActive = true
launchButton.heightAnchor.constraint(equalToConstant: 50).isActive = true
launchButton.centerXAnchor.constraint(equalTo: layoutGuide.centerXAnchor).isActive = true
launchButton.bottomAnchor.constraint(equalTo: layoutGuide.bottomAnchor, constant: -10).isActive = true
// Create content and options.
sampleChunk = Chunk(content: bodyText.text!, lang: nil, mimeType: nil)
sampleContent = Content(title: titleText.text!, chunks: [sampleChunk])
sampleOptions = Options(uiLang: nil, timeout: nil, uiZIndex: nil)
}
@IBAction func launchImmersiveReaderButton(sender: AnyObject) {
launchButton.isEnabled = false
// Callback to get token.
getToken(onSuccess: {cognitiveToken in
DispatchQueue.main.async {
launchImmersiveReader(navController: self.navigationController!, token: cognitiveToken, subdomain: self.subdomain!, content: self.sampleContent, options: self.sampleOptions, onSuccess: {
self.launchButton.isEnabled = true
}, onFailure: { error in
self.launchButton.isEnabled = true
})
}
}, onFailure: { error in
print("an error occurred: \(error)")
})
}
func getToken(onSuccess: @escaping (_ theToken: String) -> Void, onFailure: @escaping ( _ theError: String) -> Void) {
let tokenForm = "grant_type=client_credentials&resource=https://cognitiveservices.azure.com/&client_id=" + self.clientId! + "&client_secret=" + self.clientSecret!
let tokenUrl = "https://login.windows.net/" + self.tenantId! + "/oauth2/token"
var responseTokenString: String = "0"
let url = URL(string: tokenUrl)!
var request = URLRequest(url: url)
request.httpBody = tokenForm.data(using: .utf8)
request.httpMethod = "POST"
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data,
let response = response as? HTTPURLResponse,
error == nil else {
onFailure("Error")
return
}
guard (200 ... 299) ~= response.statusCode else {
onFailure(String(response.statusCode))
return
}
let responseString = String(data: data, encoding: .utf8)
let jsonResponse = try? JSONSerialization.jsonObject(with: data, options: [])
guard let jsonDictonary = jsonResponse as? [String: Any] else {
onFailure("Error parsing JSON response.")
return
}
guard let responseToken = jsonDictonary["access_token"] as? String else {
onFailure("Error retrieving token from JSON response.")
return
}
responseTokenString = responseToken
onSuccess(responseTokenString)
}
task.resume()
}
}
將新檔案新增至名為 ImmersiveReaderViewController.swift 的專案根資料夾並加入下列程式碼。
import UIKit
import Foundation
import WebKit
@available(iOS 11.0, *)
public class ImmersiveReaderWebView: WKWebView {
init(frame: CGRect, contentController: WKUserContentController) {
let conf = WKWebViewConfiguration()
conf.userContentController = contentController
super.init(frame: frame, configuration: conf)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
public class ImmersiveReaderViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {
let tokenToSend: String
let subdomainToSend: String
let contentToSend: Content
let optionsToSend: Options?
let onSuccessImmersiveReader: (() -> Void)?
let onFailureImmersiveReader: ((_ error: Error) -> Void)?
let onTimeout: ((_ timeoutValue: TimeInterval) -> Void)?
let onError: ((_ error: String) -> Void)?
let startTime = Date().timeIntervalSince1970*1000
var src: String
var webView: WKWebView!
var timer: Timer!
var timeoutValue: TimeInterval!
public init(tokenToPass: String, subdomainToPass: String, contentToPass: Content, optionsToPass: Options?, onSuccessImmersiveReader: @escaping () -> Void, onFailureImmersiveReader: @escaping (_ status: Error) -> Void, onTimeout: @escaping (_ timeoutValue: TimeInterval) -> Void, onError: @escaping (_ error: String) -> Void) {
self.tokenToSend = tokenToPass
self.subdomainToSend = subdomainToPass
self.contentToSend = contentToPass
self.optionsToSend = optionsToPass
self.onSuccessImmersiveReader = onSuccessImmersiveReader
self.onFailureImmersiveReader = onFailureImmersiveReader
self.onTimeout = onTimeout
self.onError = onError
self.src = "https://" + subdomainToPass + ".cognitiveservices.azure.com/immersivereader/webapp/v1.0/reader"
super.init(nibName: nil, bundle: nil)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override public func viewDidLoad() {
super.viewDidLoad()
// If uiLang options are set update src to reflect this.
switch optionsToSend?.uiLang {
case .none: break
case .some(let value):
src = src + "?omkt=" + value
}
// Set timeout to default or value user specifies.
switch optionsToSend?.timeout {
case .none:
timeoutValue = 15
case .some(let value):
timeoutValue = value
}
view.backgroundColor = .white
webView = WKWebView()
let contentController = WKUserContentController()
if #available(iOS 11.0, *) {
webView = ImmersiveReaderWebView(frame: .zero, contentController: contentController)
} else {
// Fallback on earlier versions
webView = WKWebView()
let config = WKWebViewConfiguration()
config.userContentController = contentController
webView = WKWebView(frame: .zero, configuration: config)
}
webView.navigationDelegate = self
webView.uiDelegate = self
contentController.add(self, name: "readyForContent")
contentController.add(self, name: "launchSuccessful")
contentController.add(self, name: "tokenExpired")
contentController.add(self, name: "throttled")
view.addSubview(webView)
webView.translatesAutoresizingMaskIntoConstraints = false
if #available(iOS 11.0, *) {
let layoutGuide = view.safeAreaLayoutGuide
webView.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor).isActive = true
webView.trailingAnchor.constraint(equalTo: layoutGuide.trailingAnchor).isActive = true
webView.topAnchor.constraint(equalTo: layoutGuide.topAnchor).isActive = true
webView.bottomAnchor.constraint(equalTo: layoutGuide.bottomAnchor).isActive = true
} else {
webView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
webView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
webView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
webView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
}
// Get path to JavaScript file.
guard let scriptPath = Bundle.main.path(forResource: "iFrameMessaging", ofType: "js") else {
onError!("Could not create script path from resource.")
return
}
do {
let scriptSource = try String(contentsOfFile: scriptPath)
let userScript = WKUserScript(source: scriptSource, injectionTime: .atDocumentStart, forMainFrameOnly: true)
contentController.addUserScript(userScript)
} catch {
onError!("Could not parse JavaScript file.")
return
}
// Start the timer.
timer = Timer.scheduledTimer(timeInterval: timeoutValue, target: self, selector: #selector(self.timedOut), userInfo: nil, repeats: false)
// Load the iframe from HTML.
webView.loadHTMLString("<!DOCTYPE html><html style='width: 100%; height: 100%; margin: 0; padding: 0;'><head><meta name='viewport' content='width=device-width, initial-scale=1, shrink-to-fit=no'></head><body style='width: 100%; height: 100%; margin: 0; padding: 0;'><iframe id='immersiveReaderIframe' src = '\(src)' width='100%' height='100%' style='border: 0'></iframe></body></html>", baseURL: URL(string: "test://learningtools.onenote.com/learningtoolsapp/cognitive/reader"))
}
@objc func timedOut(_ timer: AnyObject) {
onTimeout!(timeoutValue)
}
public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
decisionHandler(.allow)
}
public func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse, decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void ) {
decisionHandler(.allow)
}
}
extension ImmersiveReaderViewController: WKScriptMessageHandler {
public func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
if message.name == "readyForContent" {
// Stop the timer.
timer.invalidate()
// Create the message variable
let message = Message(cogSvcsAccessToken: tokenToSend, cogSvcsSubdomain: subdomainToSend, resourceName: nil, request: contentToSend, launchToPostMessageSentDurationInMs: Int(Date().timeIntervalSince1970*1000 - startTime))
do {
let jsonData = try JSONEncoder().encode(message)
let jsonString = String(data: jsonData, encoding: .utf8)
self.webView.evaluateJavaScript("sendContentToReader(\(jsonString!))") { (result, error) in
if error != nil {
self.onError!("Error evaluating JavaScript \(String(describing: error))")
}
}
} catch { print(error)}
}
if message.name == "launchSuccessful" {
onSuccessImmersiveReader!()
}
if message.name == "tokenExpired" {
let tokenExpiredError = Error(code: "TokenExpired", message: "The access token supplied is expired.")
onFailureImmersiveReader!(tokenExpiredError)
}
if message.name == "throttled" {
let throttledError = Error(code: "Throttled", message: "You have exceeded the call rate limit.")
onFailureImmersiveReader!(throttledError)
}
}
}
將另一個新檔案新增至名為 ImmersiveReaderViewController.swift 的專案根資料夾並加入下列程式碼。
import UIKit
import Foundation
var navigationController: UINavigationController?
public struct Content: Encodable {
var title: String
var chunks: [Chunk]
public init(title: String, chunks: [Chunk]) {
self.title = title
self.chunks = chunks
}
}
public struct Chunk: Encodable {
var content: String
var lang: String?
var mimeType: String?
public init(content: String, lang: String?, mimeType: String?) {
self.content = content
self.lang = lang
self.mimeType = mimeType
}
}
public struct Options {
var uiLang: String?
var timeout: TimeInterval?
public init(uiLang: String?, timeout: TimeInterval?, uiZIndex: NSNumber?) {
self.uiLang = uiLang
self.timeout = timeout
}
}
public struct Error {
public var code: String
public var message: String
public init(code: String, message: String) {
self.code = code
self.message = message
}
}
struct Message: Encodable {
let cogSvcsAccessToken: String
let cogSvcsSubdomain: String
let resourceName: String?
let request: Content
let launchToPostMessageSentDurationInMs: Int
init(cogSvcsAccessToken: String, cogSvcsSubdomain: String, resourceName: String?, request: Content, launchToPostMessageSentDurationInMs: Int) {
self.cogSvcsAccessToken = cogSvcsAccessToken
self.cogSvcsSubdomain = cogSvcsSubdomain
self.resourceName = resourceName
self.request = request
self.launchToPostMessageSentDurationInMs = launchToPostMessageSentDurationInMs
}
}
public func launchImmersiveReader(navController: UINavigationController, token: String, subdomain: String, content: Content, options: Options?, onSuccess: @escaping () -> Void, onFailure: @escaping (_ error: Error) -> Void) {
if (content.chunks.count == 0) {
let badArgumentError = Error(code: "BadArgument", message: "Chunks must not be empty.")
onFailure(badArgumentError)
}
navigationController = navController
let immersiveReaderViewController = ImmersiveReaderViewController(tokenToPass: token, subdomainToPass: subdomain, contentToPass: content, optionsToPass: options, onSuccessImmersiveReader: {
onSuccess()
}, onFailureImmersiveReader: { error in
onFailure(error)
}, onTimeout: { timeout in
navigationController?.popViewController(animated: true)
let timeoutError = Error(code: "Timeout", message: "Page failed to load after timeout \(timeout) ms.")
onFailure(timeoutError)
}, onError: { error in
navigationController?.popViewController(animated: true)
let errorMessage = Error(code: "Internal Error", message: error)
onFailure(errorMessage)
})
navigationController!.pushViewController(immersiveReaderViewController, animated: true)
}
將檔案新增至名為 iFrameMessaging.js 的「資源」資料夾中，然後加入下列程式碼。
window.addEventListener("message", function(message) {
if(message.data == "ImmersiveReader-ReadyForContent") {
window.webkit.messageHandlers.readyForContent.postMessage(null);
}
if(message.data == "ImmersiveReader-LaunchSuccessful") {
window.webkit.messageHandlers.launchSuccessful.postMessage(null);
}
if(message.data == "ImmersiveReader-TokenExpired") {
window.webkit.messageHandlers.tokenExpired.postMessage(null);
}
if(message.data == "ImmersiveReader-Throttled") {
window.webkit.messageHandlers.throttled.postMessage(null);
}
});
function sendContentToReader(message) {
document.getElementById('immersiveReaderIframe').contentWindow.postMessage(JSON.stringify({messageType:'Content', messageValue: message}), '*');
}
建置並執行應用程式
藉由選取模擬器或裝置目標，在 Xcode 中設定封存配置。
在 Xcode 中，按 Ctrl+R，或選取 [播放] 按鈕以執行專案。 應用程式應該會在指定的模擬器或裝置上啟動。
在您的應用程式中，您應該會看到：
當您選取 [沈浸式閱讀程式] 按鈕時，您會看到沈浸式閱讀程式啟動且其內容顯示在應用程式上。
