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HMS IAP Ionic Demo

1. Introduction
2. Installation Guide
3. Configuration and Description
4. Questions or Issues
5. Licensing and Terms

1. Introduction

This demo application demonstrates the usage of the HMS IAP Cordova plugin.

2. Installation Guide

Before you get started, you must register as a HUAWEI Developer and complete identity verification on the HUAWEI Developer website. For details, please refer to Register a HUAWEI ID.

2.1. Creating a Project in AppGallery Connect

Creating an app in AppGallery Connect is required in order to communicate with the Huawei services. To create an app, perform the following steps:

Sign in to AppGallery Connect and select My projects.
Select your project from the project list or create a new one by clicking the Add Project button.
Go to Project Setting > General information, and click Add app.
- If an app exists in the project and you need to add a new one, expand the app selection area on the top of the page and click Add app.
On the Add app page, enter the app information, and click OK.

2.2. Configuring the Signing Certificate Fingerprint and Obtaining agconnect-services.json

A signing certificate fingerprint is used to verify the authenticity of an app when it attempts to access an HMS Core (APK) through the HMS SDK. Before using the HMS Core (APK), you must locally generate a signing certificate fingerprint and configure it in the AppGallery Connect. You can refer to 3rd and 4th steps of Generating a Signing Certificate Codelab tutorial for the certificate generation. Perform the following steps after you have generated the certificate.

Sign in to AppGallery Connect and select your project from My Projects. Then go to Project Setting > General information. In the App information field, click the icon next to SHA-256 certificate fingerprint, and enter the obtained SHA-256 certificate fingerprint.
After completing the configuration, click OK to save the changes. (Check mark icon)
In the same page, click agconnect-services.json button to download the configuration file.

2.3. Ionic

Install Ionic CLI and other required tools if haven't done before.
```
npm install -g @ionic/cli cordova-res native-run
```
Open the demo project's root directory.
Install project dependencies.
```
npm install
```

2.3.1. With Cordova Runtime

Enable the Cordova integration.
```
ionic integrations enable cordova
```
Update the widget id property which is specified in the config.xml file. It must be same with client > package_name value of the agconnect-services.json file.
Add the Android platform to the project.
```
ionic cordova platform add android
```

Install HMS IAP plugin to the project.

ionic cordova plugin add @hmscore/cordova-plugin-hms-iap

Install HMS IAP Ionic Native wrappers.

npm install @ionic-native/core @hmscore/ionic-native-hms-iap

Copy agconnect-services.json file to <project_root>/platforms/android/app directory.

Add keystore(.jks) and build.json files to your project's root directory.

You can refer to 3rd and 4th steps of Generating a Signing Certificate Codelab tutorial page for generating keystore file.
Fill build.json file according to your keystore. For example:

{
  "android": {
    "debug": {
      "keystore": "<keystore_file>.jks",
      "storePassword": "<keystore_password>",
      "alias": "<key_alias>",
      "password": "<key_password>"
    },
    "release": {
      "keystore": "<keystore_file>.jks",
      "storePassword": "<keystore_password>",
      "alias": "<key_alias>",
      "password": "<key_password>"
    }
  }
}

Enable In-App Purchases API on AppGallery Connect.

To use HUAWEI IAP, you first need to enable the IAP service and also set IAP parameters.
Add some products on AppGallery Connect and activate these products.
After activating these products, put ids and descriptions of products in PRODUCTS variable on home.page.ts file like below.
Build Ionic app to generate resource files.
```
ionic build
```
Run the app.

ionic cordova run android --device

2.3.2. With Capacitor Runtime

Enable the Capacitor integration.
```
ionic integrations enable capacitor
```
Initialize Capacitor.
```
npx cap init [appName] [appId]
```
- For more details please follow Initialize Capacitor with your app information .
Update the appId property which is specified in the capacitor.config.json file according to your project. It must be same with client > package_name value of the agconnect-services.json file.

Install HMS IAP plugin to the project.

npm install @hmscore/cordova-plugin-hms-iap

Install HMS IAP Ionic Native wrappers.

npm install @ionic-native/core @hmscore/ionic-native-hms-iap

Build Ionic app to generate resource files.
```
ionic build
```
Add the Android platform to the project.
```
npx cap add android
```
Copy keystore(.jks) and agconnect-services.json files to <project_root>/android/app directory.
- You can refer to 3rd and 4th steps of Generating a Signing Certificate Codelab tutorial page for generating keystore file.

Open the build.gradle file in the <project_root>/android/app directory.

Add signingConfigs entry to the android section and modify it according to your keystore.
Enable signingConfig configuration for debug and release flavors.

...

android {

    ...

    // Modify signingConfigs according to your keystore
    signingConfigs {
        config {
            storeFile file('<keystore_file>.jks')
            storePassword '<keystore_password>'
            keyAlias '<key_alias>'
            keyPassword '<key_password>'
        }
    }
    buildTypes {
        debug {
            signingConfig signingConfigs.config // Enable signingConfig for debug flavor
        }
        release {
            signingConfig signingConfigs.config // Enable signingConfig for release flavor
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

...

Open the build.gradle file in the <project_root>/android directory. Add Huawei's maven repositories and agconnect classpath to the file.

 /*
    Add the information to the bottom of the file.
*/

apply plugin: 'com.huawei.agconnect'

buildscript {
    repositories {
        /*
            <Other repositories>
        */
        maven { url 'https://developer.huawei.com/repo/' }
    }
    dependencies {
        /*
            <Other dependencies>
        */
        classpath 'com.huawei.agconnect:agcp:1.9.1.300'
    }
}

/*
    <Other build.gradle entries>
*/

allprojects {
    repositories {
        /*
            <Other repositories>
        */
        maven { url 'https://developer.huawei.com/repo/' }
    }
}

Enable In-App Purchases API on AppGallery Connect.

To use HUAWEI IAP, you first need to enable the IAP service and also set IAP parameters.
Add some products on AppGallery Connect and activate these products.
After activating these products, put ids and descriptions of products in PRODUCTS variable on home.page.ts file like below.
Updates dependencies, and copy any web assets to your project.
```
npx cap sync
```
Open the project in Android Studio and run it.
```
npx cap open android
```

3. Configuration and Description

Configuring Obfuscation Scripts

Before building the APK, configure the obfuscation configuration file to prevent the HMS Core SDK from being obfuscated.

NOTE: This step is required only if you want to minify and obfuscate your app. By default obfuscation is disabled in Cordova and Ionic apps.

The obfuscation is done by ProGuard. By default, in Cordova and Ionic apps ProGuard is disabled. Even though ProGuard is not available, ProGuard support can be added through 3rd party ProGuard plugins. If ProGuard is enabled in your project, the Huawei Cordova IAP plugin's ProGuard rules need to be added to your project. These rules are as follows:

-ignorewarnings
-keepattributes *Annotation*
-keepattributes Exceptions
-keepattributes InnerClasses
-keepattributes Signature
-keep class com.huawei.hianalytics.**{*;}
-keep class com.huawei.updatesdk.**{*;}
-keep class com.huawei.hms.**{*;}
-repackageclasses

4. Questions or Issues

If you have questions about how to use HMS samples, try the following options:

Stack Overflow is the best place for any programming questions. Be sure to tag your question with huawei-mobile-services.
GitHub is the official repository for these plugins, You can open an issue or submit your ideas.
Huawei Developer Forum HMS Core Module is great for general questions, or seeking recommendations and opinions.
Huawei Developer Docs is place to official documentation for all HMS Core Kits, you can find detailed documentations in there.

If you run into a bug in our samples, please submit an issue to the GitHub repository.

5. Licensing and Terms

Huawei IAP Kit Cordova Plugin is licensed under the Apache 2.0 license.

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