DevEco Studio allows you to develop and build multiple HAP files in one application project, as shown below.
**Figure 1** Multi-HAP build view
**Figure 1** Multi-HAP build view
1. Development view in DevEco Studio
- AppScope folder
-[app.json5](app-configuration-file.md): application-wide configuration, such as the application bundle name, version number, application icon, application name, and dependent SDK version number.
-**AppScope** folder
-**[app.json5](app-configuration-file.md)**: stores application-wide configuration, such as the application bundle name, version number, application icon, application name, and dependent SDK version number.
-**resources** folder: stores application icon resources and application name string resources.
**NOTE**
- The folder is automatically generated by DevEco Studio and its name cannot be changed.
- The file names in the **AppScope** folder cannot be the same as those in the entry- or feature-type module directories. Otherwise, DevEco Studio reports an error.
- Entry- or feature-type module directories (the names are customizable)
- You implement service logic of your application in these module directories. In this example, the module folders are **entry.hap** and **feature.hap**.
-**resources** directory: stores the resources used by the module.
**NOTE**
- The folder is automatically generated by DevEco Studio and its name cannot be changed.
- The file names in the **AppScope** folder cannot be the same as those in the entry- or feature-type module folder. Otherwise, an error will be reported.
-**entry** or **feature** folder (whose name is customizable)
- A module folder created by the developer by following the creation wizard of DevEco Studio. It stores the service logic implementation of the application. Multiple module folders can be created. In the preceding figure, **entry** and **feature** are two created module folders.
-**resources** folder: stores the resources used by the module.
-**ets** folder: stores the service logic.
-[module.json5](module-configuration-file.md): module configuration, such as the module name, entry code path of the module, and component information.
-**[module.json5](module-configuration-file.md)**: stores module configuration, such as the module name, entry code path of the module, and component information.
2. View after build and packaging
- After a module is built, a HAP file for deployment is generated. Each module corresponds to a HAP file.
- The **module.json** file in the HAP file is composed of the **app.json5** and **module.json5** files in the development view.
@@ -6,32 +6,40 @@ Below is the process of developing, debugging, releasing, and deploying multiple
## Development
You can use [DevEco Studio](https://developer.harmonyos.com/en/develop/deveco-studio) to create multiple modules based on service requirements and develop services in independent modules.
You can use [DevEco Studio](https://developer.harmonyos.com/en/develop/deveco-studio) to create multiple modules as needed and develop services in respective modules.
## Debugging
You can use DevEco Studio to build code into one or more HAP files. Then, you can debug the HAP files.
After building code into one or more HAP files and installing or updating these HAP files, you can debug them by using the methods:
* Using DevEco Studio for debugging
Follow the instructions in [Debugging Configuration](https://developer.harmonyos.com/en/docs/documentation/doc-guides/ohos-debugging-and-running-0000001263040487#section10491183521520).
* Using [hdc_std](../../device-dev/subsystems/subsys-toolchain-hdc-guide.md) for debugging
* Using [hdc](../../device-dev/subsystems/subsys-toolchain-hdc-guide.md)(which can be obtained in the **toolchains** directory of the OpenHarmony SDK) for debugging
Before debugging HAP files, install or update them using either of the methods:
1. Use hdc to install and update the HAP files.
When specifying the HAP files, use the paths of the files on the operating system, for example, Windows.
You can obtain the hdc_std tool from the **toolchains** directory of the SDK. When using this tool to install an HAP file, the HAP file path is the one on the operating platform. In this example, the Windows operating platform is used. The command reference is as follows:
```
// Installation and update: Multiple file paths can be specified.
hdc_std install C:\entry.hap C:\feature.hap
hdc install C:\entry.hap C:\feature.hap
// The execution result is as follows:
install bundle successfully.
// Uninstall
hdc_std uninstall com.example.myapplication
hdc uninstall com.example.myapplication
// The execution result is as follows:
uninstall bundle successfully.
```
2. Run the hdc shell command, and then use the Bundle Manager (bm) tool to install and update the HAP files.
* Using [Bundle Manager (bm)](../../application-dev/tools/bm-tool.md) for debugging
When using bm to install or update an HAP file, the HAP file path is the one on the real device. The command reference is as follows:
When specifying the HAP files, use the paths of the files on the real device. The sample code is as follows:
```
// Run the hdc shell command before using the bm tool.
hdc shell
// Installation and update: Multiple file paths can be specified.
@@ -41,6 +49,8 @@ You can use DevEco Studio to build code into one or more HAP files. Then, you ca
// The execution result is as follows:
uninstall bundle successfully.
```
After the HAP files are installed or updated, you can debug them by following the instructions in [Ability Assistant](https://docs.openharmony.cn/pages/v3.2Beta/en/application-dev/tools/aa-tool.md/).
## Release
When your application package meets the release requirements, you can package and build it into an App Pack and release it to the application market on the cloud. The application market verifies the signature of the App Pack. If the signature verification is successful, the application market obtains the HAP files from the App Pack, signs them, and distributes the signed HAP files.
- The App Pack cannot be directly installed on the device. It is only a unit that is released to AppGallery.
- The App Pack cannot be directly installed on a device. It is only used to be released to the application market.
- All HAP files in the App Pack must share the same **bundleName** value in the configuration files.
- All HAP files in the App Pack must share the same **versionCode** value in the configuration files.
- In an application, each type of device supports only one HAP of the entry type. Each application can contain zero, one, or more HAP files of the feature type.
- In an App Pack, each type of device supports only one HAP file of the entry type and zero, one, or more HAP files of the feature type.
- Each HAP file in the App Pack must have **moduleName** configured. The **moduleName** value corresponding to all HAP files of the same device type must be unique.
- Each HAP file in the App Pack must have **moduleName** configured. Among HAP files of the same device type, the **moduleName** value must be unique.
- The signing certificates of all HAP files in the same application must be the same. Applications are released to the application market in the form of App Pack after being signed. Before distribution, the application market splits an App Pack into HAP files and resigns them to ensure the consistency of all HAP file signing certificates. Before installing HAP files on a device through the CLI or DevEco Studio for debugging, you must ensure that their signing certificates are the same. Otherwise, the installation will fail.
- The signing certificates of all HAP files in the same application must be the same. Applications are released to the application market in the form of App Pack after being signed. Before distribution, the application market splits an App Pack into HAP files and resigns them to ensure the consistency of HAP file signing certificates. Before installing HAP files on a device through the CLI or DevEco Studio for debugging, ensure that their signing certificates are the same. Otherwise, the installation will fail.
