# @ohos.bundle.freeInstall (freeInstall)

The **Bundle.freeInstall** module provides APIs for setting and obtaining installation-free information and APIs for obtaining **BundlePackInfo** and **DispatchInfo**.

> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
>
> The APIs provided by this module are system APIs.

## Modules to Import

```js
import freeInstall from '@ohos.bundle.freeInstall';
```

## Required Permissions

| Permission                                      | Permission Level    | Description              |
| ------------------------------------------ | ------------ | ------------------ |
| ohos.permission.GET_BUNDLE_INFO_PRIVILEGED | system_basic | Permission to query information about all bundles.|
| ohos.permission.INSTALL_BUNDLE             | system_core  | Permission to install or uninstall bundles.  |

For details, see [Permission Levels](../../security/accesstoken-overview.md#permission-levels).
## UpgradeFlag

**System API**: This is a system API.

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

| Name            | Value  | Description            |
| ---------------- | ---- | ---------------- |
| NOT_UPGRADE      | 0    | No module needs an upgrade.    |
| SINGLE_UPGRADE   | 1    | A single module needs an upgrade.|
| RELATION_UPGRADE | 2    | The module that has a relationship with the current one needs an upgrade.|

## BundlePackFlag

**System API**: This is a system API.

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

| Name              | Value        | Description                              |
| ------------------ | ---------- | ---------------------------------- |
| GET_PACK_INFO_ALL  | 0x00000000 | All information in the **pack.info** file.   |
| GET_PACKAGES       | 0x00000001 | Package information in the **pack.info** file.|
| GET_BUNDLE_SUMMARY | 0x00000002 | Bundle summary information in the **pack.info** file. |
| GET_MODULE_SUMMARY | 0x00000004 | Module summary information in the **pack.info** file. |

## freeInstall.setHapModuleUpgradeFlag

setHapModuleUpgradeFlag(bundleName: string, moduleName: string, upgradeFlag: UpgradeFlag, callback: AsyncCallback\<void>):void;

Sets an upgrade flag for a module. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.INSTALL_BUNDLE

**System API**: This is a system API.

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name    | Type                       | Mandatory| Description                      |
| ----------- | --------------------------- | ---- | ---------------------------- |
| bundleName  | string                      | Yes  | Bundle name.    |
| moduleName  | string                      | Yes  | Module name.          |
| upgradeFlag | [UpgradeFlag](#upgradeflag) | Yes  | Upgrade flag, which is for internal use only.      |
| callback    | AsyncCallback\<void>        | Yes  | Callback used to return the result. If the operation is successful, **err** is **null**; otherwise, **err** is an error object.|

**Error codes**

For details about the error codes, see [Bundle Error Codes](../errorcodes/errorcode-bundle.md).

| ID|    Error Message                           |
|----------|---------------------------------------- |
| 17700001 | The specified bundle name is not found. |
| 17700002 | The specified module name is not found. |

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
let bundleName = 'com.example.myapplication';
let moduleName = 'entry';
let upgradeFlag = freeInstall.UpgradeFlag.SINGLE_UPGRADE;
try {
    freeInstall.setHapModuleUpgradeFlag(bundleName, moduleName, upgradeFlag, err => {
        if (err) {
            console.error('Operation failed:' + JSON.stringify(err));
        } else {
            console.info('Operation succeed');
        }
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```

## setHapModuleUpgradeFlag

setHapModuleUpgradeFlag(bundleName: string, moduleName: string, upgradeFlag: UpgradeFlag): Promise\<void>;

Sets an upgrade flag for a module. This API uses a promise to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.INSTALL_BUNDLE

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name     | Type                       | Mandatory| Description                  |
| ----------- | --------------------------- | ---- | ---------------------- |
| bundleName  | string                      | Yes  | Bundle name.|
| moduleName  | string                      | Yes  | Module name.    |
| upgradeFlag | [UpgradeFlag](#upgradeflag) | Yes  | Upgrade flag, which is for internal use only.|

**Return value**

| Type         | Description                                |
| ------------- | ------------------------------------ |
| Promise\<void> | Promise that returns no value.|

**Error codes**

For details about the error codes, see [Bundle Error Codes](../errorcodes/errorcode-bundle.md).

| ID|    Error Message                           |
|----------|----------------------------------------|
| 17700001 | The specified bundle name is not found. |
| 17700002 | The specified module name is not found. |

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
let bundleName = 'com.example.myapplication';
let moduleName = 'entry';
let upgradeFlag = freeInstall.UpgradeFlag.SINGLE_UPGRADE;
try {
    freeInstall.setHapModuleUpgradeFlag(bundleName, moduleName, upgradeFlag).then(() => {
        console.info('Operation succeed')
    }).catch(err => {
        console.error('Operation failed:' + JSON.stringify(err));
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```

## isHapModuleRemovable

isHapModuleRemovable(bundleName: string, moduleName: string, callback: AsyncCallback\<boolean>): void;

Checks whether a module can be removed. This API uses an asynchronous callback to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name     | Type                  | Mandatory| Description                                         |
| ---------- | ---------------------- | ---- | --------------------------------------------- |
| bundleName | string                 | Yes  | Bundle name.                     |
| moduleName | string                 | Yes  | Module name.                           |
| callback   | AsyncCallback\<boolean> | Yes  | Callback used to return the result. If the module can be removed, **true** is returned; otherwise, **false** is returned.|

**Error codes**

For details about the error codes, see [Bundle Error Codes](../errorcodes/errorcode-bundle.md).

| ID|    Error Message                           |
|----------|----------------------------------------|
| 17700001 | The specified bundle name is not found. |
| 17700002 | The specified module name is not found. |

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
let bundleName = 'com.example.myapplication';
let moduleName = 'entry';
try {
    freeInstall.isHapModuleRemovable(bundleName, moduleName, (err, data) => {
        if (err) {
            console.error('Operation failed:' + JSON.stringify(err));
        } else {
            console.info('Operation succeed:' + JSON.stringify(data));
        }
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```

## isHapModuleRemovable

isHapModuleRemovable(bundleName: string, moduleName: string): Promise\<boolean>;

Checks whether a module can be removed. This API uses a promise to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name    | Type  | Mandatory| Description              |
| ---------- | ------ | ---- | ------------------ |
| bundleName | string | Yes  | Bundle name.  |
| moduleName | string | Yes  | Module name.|

**Return value**

| Type            | Description                        |
| ---------------- | ---------------------------- |
| Promise\<boolean> | Promise used to return the result. If the module can be removed, **true** is returned; otherwise, **false** is returned.|

**Error codes**

For details about the error codes, see [Bundle Error Codes](../errorcodes/errorcode-bundle.md).

| ID|    Error Message                           |
|----------|----------------------------------------|
| 17700001 | The specified bundle name is not found. |
| 17700002 | The specified module name is not found. |

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
let bundleName = 'com.example.myapplication';
let moduleName = 'entry';
try {
    freeInstall.isHapModuleRemovable(bundleName, moduleName).then(data => {
        console.info('Operation succeed:' + JSON.stringify(data));
    }).catch(err => {
        console.error('Operation failed:' + JSON.stringify(err));
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```

## getBundlePackInfo

getBundlePackInfo(bundleName: string, bundlePackFlag : BundlePackFlag, callback: AsyncCallback\<BundlePackInfo>): void;

Obtains **bundlePackInfo** based on **bundleName** and **bundlePackFlag**. This API uses an asynchronous callback to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name        | Type                                                        | Mandatory| Description                                                        |
| -------------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
| bundleName     | string                                                       | Yes  | Bundle name.                                            |
| bundlePackFlag | [BundlePackFlag](#bundlepackflag)                            | Yes  | Flag of the bundle package.                                    |
| callback       | AsyncCallback<[BundlePackInfo](js-apis-bundleManager-BundlePackInfo.md)> | Yes  | Callback used to return the result. If the operation is successful, **err** is **null** and **data** is the **BundlePackInfo** object obtained; otherwise, **err** is an error object.|

**Error codes**

For details about the error codes, see [Bundle Error Codes](../errorcodes/errorcode-bundle.md).

| ID|    Error Message                           |
|----------|----------------------------------------|
| 17700001 | The specified bundle name is not found. |

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
let bundleName = 'com.example.myapplication';
let bundlePackFlag = freeInstall.BundlePackFlag.GET_PACK_INFO_ALL;
try {
    freeInstall.getBundlePackInfo(bundleName, bundlePackFlag, (err, data) => {
        if (err) {
            console.error('Operation failed:' + JSON.stringify(err));
        } else {
            console.info('Operation succeed:' + JSON.stringify(data));
        }
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```
## getBundlePackInfo

getBundlePackInfo(bundleName: string, bundlePackFlag : BundlePackFlag): Promise\<BundlePackInfo>;

Obtains **bundlePackInfo** based on **bundleName** and **BundlePackFlag**. This API uses a promise to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name        | Type                             | Mandatory| Description                  |
| -------------- | --------------------------------- | ---- | ---------------------- |
| bundleName     | string                            | Yes  | Bundle name.|
| bundlePackFlag | [BundlePackFlag](#bundlepackflag) | Yes  | Flag of the bundle package.|

**Return value**

| Type                                                      | Description                               |
| ---------------------------------------------------------- | ----------------------------------- |
| Promise<[BundlePackInfo](js-apis-bundleManager-BundlePackInfo.md)> | Promise used to return the **BundlePackInfo** object obtained.|

**Error codes**

For details about the error codes, see [Bundle Error Codes](../errorcodes/errorcode-bundle.md).

| ID|    Error Message                           |
|----------|----------------------------------------|
| 17700001 | The specified bundle name is not found. |

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
let bundleName = 'com.example.myapplication';
let bundlePackFlag = freeInstall.BundlePackFlag.GET_PACK_INFO_ALL;
try {
    freeInstall.getBundlePackInfo(bundleName, bundlePackFlag).then(data => {
        console.info('Operation succeed:' + JSON.stringify(data));
    }).catch(err => {
        console.error('Operation failed:' + JSON.stringify(err));
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```

## getDispatchInfo

getDispatchInfo(callback: AsyncCallback\<DispatchInfo>): void;

Obtains the dispatch information. This API uses an asynchronous callback to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Parameters**

| Name  | Type                                                        | Mandatory| Description                                                        |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
| callback | AsyncCallback<[DispatchInfo](js-apis-bundleManager-dispatchInfo.md)> | Yes  | Callback used to return the result. If the operation is successful, **err** is **null**, and **data** is the [DispatchInfo](js-apis-bundleManager-dispatchInfo.md) object obtained. otherwise, **err** is an error object.|

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
try {
    freeInstall.getDispatchInfo((err, data) => {
        if (err) {
            console.error('Operation failed:' + JSON.stringify(err));
        } else {
            console.info('Operation succeed:' + JSON.stringify(data));
        }
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```

## getDispatchInfo

getDispatchInfo(): Promise\<DispatchInfo>;

Obtains the dispatch information. This API uses a promise to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

**System capability**: SystemCapability.BundleManager.BundleFramework.FreeInstall

**Return value**

| Type                                            | Description                                                        |
| ------------------------------------------------ | ------------------------------------------------------------ |
| Promise<[DispatchInfo](js-apis-bundleManager-dispatchInfo.md)> | Promise used to return the [DispatchInfo](js-apis-bundleManager-dispatchInfo.md) object obtained.|

**Example**

```js
import freeInstall from '@ohos.bundle.freeInstall';
try {
    freeInstall.getDispatchInfo().then(data => {
        console.info('Operation succeed:' + JSON.stringify(data));
    }).catch(err => {
        console.error('Operation failed:' + JSON.stringify(err));
    });
} catch (err) {
    console.error('Operation failed:' + JSON.stringify(err));
}
```