DEV Community: Zachary Powell

Sharing In-app Images with Huawei's App Linking

Zachary Powell — Mon, 21 Feb 2022 14:18:12 +0000

App Linking allows you to create links that work across multiple platforms including Android, iOS, and web. When an Android or iOS device user taps a link created with App Linking, they will be redirected to the specific in-app content. If a user has not yet installed the app, they will be redirected to their local app store to download the app. After downloading and opening the app, the user will be taken to the in-app content.

The following shows you how to share in-app images with App Linking.

Service Setup

To integrate the service, perform the following steps:

Create a project in AppGallery Connect.
Request a URL prefix.
Integrate the service SDK into your app and create a link using an API.
Configure your Android app to receive and process the link of App linking.

To identify and load an image to be shared, you need to add the PhotoID parameter to the deep link of App Linking, and parse the deep link to obtain the parameter value when receiving the link.

Creating a Project in AppGallery Connect

Sign in to AppGallery Connect and click My projects.
Click + to add a project on the displayed page. Enter a project name and click OK.
Add an app to the project, and configure the same package name as that set in your Android project.

Requesting a URL Prefix

Go to Grow > App Linking.
On the App Linking page, click Use now to enable the service.
Under the URL prefixes tab page, click New URL prefix to add a unique URL prefix. AppGallery Connect automatically checks whether the URL prefix is unique.
In this example, the URL prefix is configured as follows.

Integrating the Service SDK and Creating a Link Using an API

Go to Project setting > General information, download the agconnect-service.json file and add it to the App directory of your project.

Open the project-level gradle file, and add the Maven repository address and AppGallery Connect plugin to the file.

Apply the AppGallery Connect plugin in the app-level gradle file, and add the service SDK to the file.

Call an API to create a link of App Linking based on the photo ID.
Define the UserName and ImageURL input parameters for the preview page of the deep link, and encapsulate the PhotoID parameter into the deep link.

Receiving a Link of App Linking

First of all, create an activity on the ImageDetail page for receiving the deep link of App Linking, to which a user will be redirected after the link is tapped.

Add an intent filter for receiving the deep link to ImageDetailActivity in the AndroidManifest file

Under onCreate() of the ImageDetail file, add the following code for receiving and parsing a link of App Linking, and for obtaining the data of the deep link.

Additional Configurations

If a user has not installed your app, perform the following operations:

If a user has not installed your app, they will be redirected to the app details page on AppGallery or another local app store, to download your app, based on the app package name of your app.

When the user downloads and launches your app, the link of App Linking can still take effect and parameter values can be passed. However, the user will be redirected to the home page upon the first launch your app, as the intent filter configured in the last step does not take effect. Therefore, you need to configure the home screen for receiving the link of App Linking.

So for example set an activity for getAppLinking, for example, LoginActivity.

References

Service introduction of App Linking
Get Started tutorials
App Linking Videos: Troubleshooting

Common errors found when generating Android certificates (and how to fix them!)

Zachary Powell — Tue, 15 Feb 2022 11:31:21 +0000

AppGallery supports two kinds of signing certificates: one that is totally generated by AppGallery Connect and the other one that is generated by developers. Here I will share some solutions with you for the common errors reported during the signing certificate generation.
The command in the official document is as follows:

Error 1 - "No value provided for flag: include-cer"

Cause: It is not the correct pepk.jar file. Normally, its file size is around 2 MB. Check whether it is the file that was provided by Android Studio.
Solution: Use the correct pepk.jar file that you can get from Google.

Error 2: "java.io.IOException: Keystore was tampered with, or password was incorrect"

Cause: The keystore password is most likely not correct.
Solution: Enter the correct password.

Error 3: "Unable to export or encrypt the private key"

Cause: Incorrect password. The keystore password is entered correctly, but the key file password is entered incorrectly when entered for the second time.
Solution: Enter the correct key file password.

Error 4: "Unable to parse the input:"

Cause: The length of the encryption key is incorrect. Check whether you have copied the complete encryption key.
Solution: Use the complete encryption key.

Error 5: "java.lang.IllegalArgumentException: publicKey should be 68 bytes"

Cause: The length of the encryption key is incorrect. Check whether you have copied the complete encryption key.
Solution: Use the complete encryption key.

Error 6: "java.lang.IllegalArgumentException: Hex encoded byte array must have even length but instead has length: 143."

Cause: The encryption key is too long.
Solution: Use the correct encryption key

Error 7: "java.security.GeneralSecurityException: point is not on the curve"

Cause: The encryption key is incorrect.
Solution: Use the correct encryption key.

Using Huawei App Messaging in Android

Zachary Powell — Thu, 10 Feb 2022 15:01:46 +0000

Huawei AppGallery Connect's App Messaging service allows you to send targeted, useful in app messages to your users.
The look and content of messages are completely customisable, and there is a wide range of triggers and filters that can be used to decide who will receive a message and when.
Lets take a look today at how we can set this up to work within an Android project.

As always we will start with a fresh project but of course you can just as easily use this guide to build the service into an app you already have!

Enabling the Service

Sign in to AppGallery Connect, click My projects, click your project, go to Grow > App Messaging, and click Use now. For more information, please refer to App Messaging.
If you do not have an Android project, create one first.
After completing these steps, you can start creating an in-app message.

Click New in the upper right corner.

Set Name and Description

Set the style and content and click Next.

Select a message type from the Layout drop-down list, and set its style and content. Currently, the Modal, Image, and Banner message types are supported.

Set target users and click Next.

In App, select the name of the app package for which you need to publish the in-app message.

You can click New condition to add a condition for matching target users, which include app version, OS version, language, country/region, audience, and more. Among the types, User attributes are defined under HUAWEI Analytics > Management > User attributes, and Prediction is defined by creating prediction tasks under My projects > Grow > Prediction.

Set the message sending time

Message display is triggered by specific events. App Messaging supports two types of trigger events: preset events and HUAWEI Analytics events.
(Optional) Set conversion events. Before setting a conversion event, you need to toggle it on first, which can be done as follows:
Go to HUAWEI Analytics > Management > Events and toggle Mark as conversion event and Event switch on for the specified event. In addition to the events the SDK collects, you can also create a preset or custom event for event tracking and analysis.

Finally, Click Save or Publish.

Integrating the Service SDK

Add Maven repository configuration to the build.gradle file of your project.

Open the app-level build.gradle file and configure the App Messaging SDK

In AppGallery Connect, click My projects, and find your project from the list. Go to Project settings > General information, download the agconnect-services.json file, and save the file to the app directory of your Android project.

Displaying an In-App Message

If you choose to display a message using the default message layout, the development process is totally coding-free.
By integrating the SDK as above you are all good to go, your creating message will be displayed as per its filters and triggers.
You can also call APIs provided by the service SDK to customize your in-app message.

Customising the Message Layout

First, you need to customize a message display class. To do so, implement AGConnectAppMessagingDisplay and override the displayMessage method.

Define an AlertDialog in displayMessage and copy the layout file to the code. The sample code is as follows:

Call addCustomView to implement the custom layout.

Test in app message

Obtain the Anonymous Application Identifier (AAID) of your test device, which is used to identify app instances running on mobile devices during app installation. Compared with device-level hardware IDs that cannot be reset, the privacy of AAID is much higher. We can obtain the AAID through coding.

Sign in to AppGallery Connect, go to Grow > App Messaging > Messages, find the message that you need to test, and click Test in the Operation column.

Click Add test user and enter the AAID in the test box.

Click Save. Check whether the test message can be properly displayed and operated.

For details, please refer to the development guide of App Messaging.

Implement Huawei AppGallery Remote Configuration in your Xamarin Android app

Zachary Powell — Tue, 08 Feb 2022 10:32:53 +0000

Xamarin (Microsoft) is a multi-system development platform for mobile services that many developers use. Many AppGallery Connect services now support Xamarin, including Remote Configuration.

Remote Config allows you to make changes to your app remotely by making use of variables that you can define in the AppGallery Console. Different values can be set for different audiences, locations or sections of users. This is a great way to personalise your application, carry out testing of new features or just make updates without having to deploy a new app version.

Install the Xamarin environment and project setup.

You'll need to first download and install Visual Studio 2019.
Open Visual Studio and select Mobile development with .NET to install the Xamarin environment.

Next make sure you have enabled the Auth Service in AppGallery Connect.

Open Visual Studio, click Create a new project in the start window, select Mobile App (Xamarin.Forms), and set the app name and other required information.

Right-click your project and choose Manage NuGet Packages.

Search for the Huawei.Agconnect.RemoteConfiguration package on the displayed page and install it.

Download the JSON service file from your AppGallery project and add it into the *Assets directory in your project.

Create a new class named HmsLazyInputStreams.cs, and implement the following code to read the JSON file.

Create a ContentProvider class and add the following code for your file to be read once your app is launched. Ensure that the package name set in ContentProvider, and the one in your project and the one set in AppGallery Connect are the same as the app package name.

Right-click your project and choose Properties. Click Android Manifest on the displayed page and set a package name

Set in app default parameter values

You can configure a default parameter value in either of the following ways:
Using an XML resource file. Add a default parameter value XML file to the res/xml directory of your project. Call the ApplyDefault method to read the file.

Or you can use a Map object. Set a default parameter value dynamically through coding.

Fetch the updated parameter value

Call the fetch API to fetch the updated parameter value from Remote Configuration. The default update interval used by the fetch API is 12 hours and can be set as required.

Obtain all parameter values

For Xamarin.Android apps, the MergedAll API is called to obtain all parameter values including the in-app default parameter value and the on-cloud parameter value. For Android apps, the getMergedAll API is used

And that's all for integrating Remote Configuration into Xamarin.Android apps. As more and more AppGallery Connect services support Xamarin, I will keep you posted about further integration tutorials.

Implement Huawei AppGallery Auth Service in your Xamarin Android app with Facebook Login support

Zachary Powell — Thu, 03 Feb 2022 14:45:30 +0000

Xamarin (Microsoft) is a multi-system development platform for mobile services that many developers use. Many AppGallery Connect services now support Xamarin, including Auth Service. Here I'll explain on how to integrate Auth Service into your Xamarin.Android app and use the 3rd party auth support for Facebook.

Install the Xamarin environment and project setup.

You'll need to first download and install Visual Studio 2019.
Open Visual Studio and select Mobile development with .NET to install the Xamarin environment.

Next make sure you have enabled the Auth Service in AppGallery Connect.

Open Visual Studio, click Create a new project in the start window, select Mobile App (Xamarin.Forms), and set the app name and other required information.

Right-click your project and choose Manage NuGet Packages.

Search for the Huawei.Agconnect.Auth package on the displayed page and install it.

Download the JSON service file from your AppGallery project and add it into the *Assets directory in your project.

Create a new class named HmsLazyInputStreams.cs, and implement the following code to read the JSON file.

Right-click your project and choose Properties. Click Android Manifest on the displayed page and set a package name

Follow the process that Facebook describes to setup your application with their platform. Details can be found here

Finally the last thing we need to do is install the Xamarin Facebook login package.

Right-click your project and choose Manage NuGet Packages. Search for Xamarin.Facebook.Login.Android and install it.

Implement Facebook Auth

Create a login button within your application, this will use the below code to start the login process getting the specific requested account details from Facebook and process this using the call back.

The Facebook Callback then looks like:

In the OnSuccess method, we have obtained the access token and generated a credential for Facebook Login, and called SignInAsync to pass the credential for sign-in.

Finally, forward OnActivityResult to the callBackManager.

The result code 64206 is defined by Facebook in its Login SDK. It is used to identify the callback for Facebook Login when there are multiple callbacks in OnActivityResult. An interesting fact is that, the hexadecimal value of 64206 is 0xFACE, which is a little trick from Facebook.

Using Huawei App Messaging in Flutter

Zachary Powell — Tue, 01 Feb 2022 10:27:51 +0000

As always we will start with a fresh project but of course you can just as easily use this guide to build the service into an app you already have!

Installing the Flutter Environment

Download the Flutter SDK.
Decompress the package to any directory.
Add the Flutter command file to the environment variable.
Download the Flutter and Dart plugins in Android Studio.

Enabling the Service and Creating a Flutter project

Click New in the upper right corner.

Set Name and Description

Set the style and content and click Next.

Select a message type from the Layout drop-down list, and set its style and content. Currently, the Modal, Image, and Banner message types are supported.

Set target users and click Next.

In App, select the name of the app package for which you need to publish the in-app message.

Finally, Click Save or Publish.

Integrating the Service SDK

Add dependencies

Start by creating a Flutter project in Android Studio (or opening one).
Then add the agconnect-services.json file from your AppGallery project to the android/app directory

Within the project level build.gradle file make sure to include the huawei maven repo and add the agcp package as a dependency.

Next in your app level build.gradle apply the agconnect plugin as so:

Then in your pubspec.yaml file add the App Messaging SDK dependency.

Displaying an In-App Message

Customising the Message Layout

Add the following code to onCreate in MainActivity,

so that the service SDK can listen to the corresponding event and apply the customized layout.

Then the message is displayed in your app.

Testing an In-App Message

App Messaging allows you to test an in-app message before it is published. You need to obtain the Anonymous Application Identifier (AAID) of your test device by adding the following code to your Android app module.

Sign in to AppGallery Connect, go to Grow > App Messaging > Messages, find the message that you created, click and select Test in the Operation column.

Click Add test user and enter the AAID

Click Save. Check whether the test message is properly displayed on your test device

Integrating Huawei's Remote Configuration into an Android App

Zachary Powell — Wed, 26 Jan 2022 13:47:11 +0000

Remote Configuration allows you to change how your app works and looks on the cloud, without requiring any app upgrades. Here we'll take a look at a hands-on example of how to integrate Remote Configuration.

Enabling and Configuring Remote Configuration

Sign in to AppGallery Connect and click My projects.
Click your project card and select the app for which you want to enable Remote Configuration from the app drop-down list on the top.
Go to Grow > Remote Configuration. If this is your first time using Remote Configuration, click Use now in the upper right corner.

Then you'll be able to configure the service in AppGallery Connect.
On the Remote Configuration page, set parameter and their conditions.
First, click New parameter to add a parameter. You can set multiple conditional values for a parameter. That is, the parameter value will vary depending on the condition.

Click Save.
Click Release to make the configuration take effect. If you click Cancel, all changes will be discarded.
Click the Parameters tab, on which all parameters are listed.
Click in the upper right corner of the parameter card. You'll be able to view, modify, and delete parameters, and copy existing parameters as new ones.
On the Conditions tab, you can set different conditions for the parameter. For example, if you set Condition to Audience, the configured parameter value will be updated only for a specific user group.

Integrating SDKs

Add Maven repository configuration to the build.gradle file of your project

Open the app-level build.gradle file, and configure the Remote Configuration SDK, Analytics SDK, and AppGallery Connect Plugin

In AppGallery Connect, click My projects, and find your project from the list. Go to Project settings > General information, download the agconnect-services.json file, and save the file to the app directory of your Android project.

Developing Functions

In this step, the Remote Configuration SDK will be used to set in-app default values and fetch parameter values from the cloud.
Add a default value configuration XML file, for example, remote_config.xml, to the res/xml directory of your Android Studio project. In the file, key-value pairs are in testvalue format.

Call applyDefault to pass the default values.

You can also create a Map object, and call applyDefault to read and pass the default values.

You can apply parameter values fetched from the cloud either immediately or upon the next launch of your app.

Fetch parameter values and apply them immediately

The following code applies parameter values immediately.

In the code, call the fetch API to fetch parameter values from the cloud, and then call the apply API to apply the parameter values in the fetching callback immediately.

Fetch parameter values and apply them upon the next launch of your app.

The following code applies parameter values upon the next launch of your app.

In the code, call loadLastFetched to obtain the parameter values fetched by calling the fetch API, and call the apply API to apply the parameter values.

Obtain the value for a single parameter

You can call an API to obtain the value for a parameter of a specific type from parameter values fetched from the cloud. The APIs for different parameter types are listed below

Obtain all parameter values

You can obtain all in-app default parameter values and on-cloud parameter values by calling getMergedAll.

For details, please refer to the development guide for Remote Configuration.

How to fix app crashing when using the showFloatWindow API on Huawei devices running EMUI before version 9.1

Zachary Powell — Thu, 20 Jan 2022 11:22:29 +0000

A number of reports where received about crashes when the showFloatWindow API is called on devices running older versions of EMUI. Lets take a look at this crash today and how we can fix the issue.

Start by integrating version 6.1.0.301 of the Game Service SDK into a project and successfully implemented the floating window function.
Then, when testing the game on devices running a version of EMUI earlier than 9.1, the game crashed when showFloatWindow API is called. The crash logs are as follows.

The error logs suggested that the issue was caused by missing layout files during layout implementation. This error suggests that c_buoycircle_window_small.xml, c_buoycircle_hide_notice.xml, and c_buoycircle_hide_guide_dialog.xml layout files were not found in this project. However, they had been saved under the layout folder as displayed in the following figure.

The next possible issue could have been that the layout files were obfuscated. So, lets check the build file to be sure:

As you can see minifyEnabled was set to true, indicating that the obfuscation function was enabled. This was also the case for shrinkResources, which meant that resource files were excluded during package creation.

One option of course would be to simply disable the shrinking of resources. By commenting out this line the game would run fine and the API call wouldn't crash, however the resource files are not longer compressed and will take up much more space.

To compress the resources, you can create an XML file that contains the resources tag in the project or use the keep.xml file in the res/raw directory, and specify the resources to be reserved in the tools:keep attribute as follows:

This solution allows the floating window function to work and is able to compress the resource files.

Note: If you have integrated the Game Service SDK, Huawei suggests that you add the following resources and configure the following obfuscation scripts.

@drawable/c_buoycircle*
@drawable/hms_game*
@layout/c_buoycircle*
@layout/hms_game*
@strings/hms_game*
@strings/c_buoycircle*

Integrating Cloud Functions in a Flutter application

Zachary Powell — Wed, 19 Jan 2022 16:54:57 +0000

Cloud Functions enables serverless computing through Function as a Service (FaaS) capabilities to simplify app development and O&M. This helps you implement functions more simply and build service capabilities more quickly. The following describes how to integrate Huawei's AppGallery Connect Cloud Function service in Flutter.
We will create a basic new project as an example but of course you could make use of a project you already have thats using flutter!

Project Setup

Install the Flutter environment.

Download the Flutter SDK package and decompress the package to any directory.

Download the Flutter and Dart plugins in Android Studio.

Enable Huawei Cloud Functions

Create an Android app in AppGallery Connect and enable Cloud Functions for it as detailed in this guide.
Now we can go ahead and create a cloud function as you require it use this guide to help understand what can be done.
Once your happy with your function (in this instance it might just be as simple as returning a hello world statement for testing) you can go ahead and create a HTTP trigger that will trigger the function.

Create Flutter Project

Next create your flutter project in android studio (or open your existing project if you already have one!).

Download your agconnect-services.json file from the AppGallery Connect console and add it into your project under the 'app' directory

Within the project level build.gradle file make sure to include the huawei maven repo and add the agcp package as a dependency.

Next in your app level build.gradle apply the agconnect plugin as so:

Then in your pubspec.yaml file add the Cloud Function SDK dependency.

Call the Cloud function

The below code is an example of how you can call a simple cloud function and get the result returned.

Where test-\$latest is the HTTP trigger identifier.

Integrating Auth Service into a Xamarin Android App

Zachary Powell — Mon, 10 Jan 2022 13:52:44 +0000

Install the Xamarin environment.

You'll need to first download and install Visual Studio 2019.
Open Visual Studio and select Mobile development with .NET to install the Xamarin environment.

Next make sure you have enabled the Auth Service in AppGallery Connect.

Open Visual Studio, click Create a new project in the start window, select Mobile App (Xamarin.Forms), and set the app name and other required information.

Right-click your project and choose Manage NuGet Packages.

Search for the Huawei.Agconnect.Auth package on the displayed page and install it.

Download the JSON service file from your AppGallery project and add it into the *Assets directory in your project.

Create a new class named HmsLazyInputStreams.cs, and implement the following code to read the JSON file.

Then add the following code to AttachBaseContext under MainActivity.

Right-click your project and choose Properties. Click Android Manifest on the displayed page, and set a package name.

Once you've completed all of these preparations, you'll be able to develop app functions.

If your app requires mobile number sign-in support, the Auth Service SDK can help you implement both sign-up and sign-in for this authentication mode. You'll need to send verification codes to your users for both stages. Auth Service can help you with that as well.

Setup Mobile Number verification

Create a VerifyCodeSettings object that contains the SMS messaging settings, including the action and language.

Call the RequestVerifyCodeAsync method to send a request to the Auth Service server, and pass the country code and mobile number entered by a user, and the VerifyCodeSettings object you just created, for Auth Service to send a verification code SMS message to the user.

Upon receiving the verification code, the user can start sign-up.
First, you'll need to create a PhoneUser object to store the user's inputs, including the mobile number, country code, verification code, and password. The user can choose whether to set a password. If so, they'll need to enter a password when signing in to your app.

Call the CreateUserAsync method to create a user.

Once sign-up is complete, the Auth Service SDK will automatically sign the user in to your app, and you won't need to call the sign-in API again.

For an existing user, you need to implement the sign-in process, either via a verification code or a password.

You can call CredentialwithPassword or CredentialWithVerifyCode to generate a credential for a password sign-in or a verification code sign-in, respectively. Then call the SignInAsync method to pass the credential for sign-in.

And thats it! We now have a fully functional authentication system using the users mobile number to confirm they are who they say they are.

Integrating AppGallery Connect Crash Service in a Xamarin app for iOS

Zachary Powell — Thu, 06 Jan 2022 10:27:06 +0000

The Huawei AppGallery Connect Crash service is a free to use crash analytics service which is supported on a wide range of platforms and frameworks.

Today lets take a look at how we can use in in a Xamarin, a hybrid framework and specifically set it up to work on iOS devices. This guide will start with a blank application but of course you can just as easily follow along and integrate into a pre-existing application!

Preparing the Xamarin Environment and Configuring Your Project

You need to install Visual Studio for MAC first, and then select Mobile development with .NET in Visual Studio to install the Xamarin environment.

Create a project in AppGallery Connect and enable HUAWEI Analytics.

Right-click your project and choose Manage NuGet Packages.

Find the Huawei.Agconnect.iOS.Crash package and install it.

Find the Huawei.Agconnect.iOS.AgconnectCore package, select the 1.2.0.300 version, and install it.

Add the plist file from your AppGallery Project to the project directory.

Set Build Action to BundleResource.

Developing Your App

Start by Configure the layout of your app for the testing of the crash service, in this example we will create three buttons to trigger different tests.
Double-click main.storyboard to launch Xcode, and create the MakeCrash, CatchException, and CustomReport buttons

In the MainActivity.cs file, call AGConnectCrash.Instance.TestIt to trigger a crash, call AGConnectCrash.Instance.SetUserId to set a custom user ID, call AGConnectCrash.Instance.SetCustomKey to set the key and value for a custom key-value pair, call AGConnectCrash.Instance.Log to set the log level, and call AGConnectCrash.Instance.RecordException to record a non-fatal exception.

This could look something like:

View Crash Report

Tap MakeCrash, CatchException, and CustomReport in sequence, and check the report in AppGallery Connect.

View the crash statistics.

Check the exceptions

Diagnose the causes of exceptions.

Check the custom key-value pairs.

View the custom log levels

View custom user IDs.

For details, please refer to:

Crash for iOS
Codelab of Crash for iOS

Using the Cloud DB JavaScript Server SDK in Cloud Functions

Zachary Powell — Tue, 04 Jan 2022 10:00:36 +0000

With Cloud Functions, you can configure a CLOUDDB trigger to call a function when data is entered, deleted, or modified in Cloud DB.
The Cloud DB service has been released with a JavaScript Server SDK, which can be used in the Node.js environment that the Cloud Functions service supports. In this article, I will elaborate on how to enter and query data with the Cloud DB JavaScript Server SDK in Cloud Functions.

Enabling Required Services

You need to enable two services.
First of all, sign in to AppGallery Connect and perform the following operations:

Enable Cloud Functions. Click My projects, click your project card, and go to Build > Cloud Functions. On the Cloud Functions page, click Enable now. Click + New Function to create a function.
Enable Cloud DB. Click My projects, click your project card, and go to Build > Cloud DB. On the Cloud DB page, click Enable now and then create an object type and a Cloud DB zone.

Configuring the JavaScript Server SDK of Cloud DB

Here, I will use the src file in the Huawei service demo to demonstrate how the JavaScript Server SDK is configured. You can also download the file and use it for your own file from GitHub.

Then you need to do the following in AppGallery Connect:

Export an object type.

On the Cloud DB page, export the BookInfo object type to a JS file, and then add it to the model directory of your project.

Download the authentication credential.

Go to Project settings > Server SDK. On the Server SDK tab page, click Create for API client first, and then click Download credential to download the authentication credential. Finally, add it to the model directory of your project

Modify the path to the credential.

You need to modify the path to the credential as it was saved to the model directory. In the CloudDBZoneWrapper.js file (use the _dirname method to obtain the file), modify the initialization code as follows:

Configure a handler.

You can either use the Start.js file as the handler by default or create a new one. For example, the inde.js file is created as a handler. The sample code is as follows:

Packaging Your Project and Configuring a Trigger

You need to package your project, upload it to Cloud Functions, and test it with events. The handler file should be saved in the root directory.

Sign in to AppGallery Connect and go to the Cloud Functions page. Upload your package and set the name of the handler to index.myHandler

Configure a CLOUDDB trigger. Click + Add Trigger and configure the type, Cloud DB zone, and object type for the trigger.

Testing the Function

In AppGallery Connect, go to Cloud Functions > Test.
Configure a trigger event according to the documentation
If you need to configure a data insertion event, add the following sample code.

Check the test result.

Reference

Cloud Functions
Defining a programming model
Cloud DB JavaScript Server SDK