harmony 鸿蒙@ohos.enterprise.usbManager (USB Management) (System API)

2025-06-12
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@ohos.enterprise.usbManager (USB Management) (System API)

The usbManager module provides APIs for USB management.

NOTE

The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.

The APIs of this module can be used only in the stage model.

The APIs of this module can be called only by a device administrator application that is enabled.

This topic describes only the system APIs provided by the module. For details about its public APIs, see @ohos.enterprise.usbManager.

Modules to Import

import { usbManager } from '@kit.MDMKit';

usbManager.setUsbPolicy

setUsbPolicy(admin: Want, usbPolicy: UsbPolicy, callback: AsyncCallback<void>): void

Sets the USB read/write policy. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.ENTERPRISE_MANAGE_USB

System capability: SystemCapability.Customization.EnterpriseDeviceManager

Parameters

Name	Type	Mandatory	Description
admin	Want	Yes	EnterpriseAdminExtensionAbility.
usbPolicy	UsbPolicy	Yes	USB access policy. This API supports READ_WRITE and READ_ONLY only.
callback	AsyncCallback<void>	Yes	Callback invoked 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 Enterprise Device Management Error Codes and Universal Error Codes.

ID	Error Message
9200001	The application is not an administrator application of the device.
9200002	The administrator application does not have permission to manage the device.
201	Permission verification failed. The application does not have the permission required to call the API.
202	Permission verification failed. A non-system application calls a system API.
401	Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed.

Example

import { Want } from '@kit.AbilityKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};
let policy: usbManager.UsbPolicy = usbManager.UsbPolicy.READ_WRITE

usbManager.setUsbPolicy(wantTemp, policy, (err) => {
  if (err) {
    console.error(`Failed to set usb policy. Code is ${err.code}, message is ${err.message}`);
    return;
  }
  console.info('Succeeded in setting usb policy');
})

usbManager.setUsbPolicy

setUsbPolicy(admin: Want, usbPolicy: UsbPolicy): Promise<void>

Sets the USB read/write policy. This API uses a promise to return the result.

Required permissions: ohos.permission.ENTERPRISE_MANAGE_USB

System capability: SystemCapability.Customization.EnterpriseDeviceManager

Parameters

Name	Type	Mandatory	Description
admin	Want	Yes	EnterpriseAdminExtensionAbility.
usbPolicy	UsbPolicy	Yes	USB access policy. This API supports READ_WRITE and READ_ONLY only.

Return value

Type	Description
Promise<void>	Promise that returns no value. An error object is thrown when the USB policy fails to be set.

Error codes

For details about the error codes, see Enterprise Device Management Error Codes and Universal Error Codes.

ID	Error Message
9200001	The application is not an administrator application of the device.
9200002	The administrator application does not have permission to manage the device.
201	Permission verification failed. The application does not have the permission required to call the API.
202	Permission verification failed. A non-system application calls a system API.
401	Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed.

Example

import { Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};
let policy: usbManager.UsbPolicy = usbManager.UsbPolicy.READ_WRITE

usbManager.setUsbPolicy(wantTemp, policy).then(() => {
  console.info('Succeeded in setting usb policy');
}).catch((err: BusinessError) => {
  console.error(`Failed to set usb policy. Code is ${err.code}, message is ${err.message}`);
})

usbManager.disableUsb¹¹⁺

disableUsb(admin: Want, disable: boolean): void

Enables or disables USB.

Required permissions: ohos.permission.ENTERPRISE_MANAGE_USB

System capability: SystemCapability.Customization.EnterpriseDeviceManager

Parameters

Name	Type	Mandatory	Description
admin	Want	Yes	EnterpriseAdminExtensionAbility.
disable	boolean	Yes	Whether to disable USB. The value true means to disable USB; the value false means the opposite.

Error codes

For details about the error codes, see Enterprise Device Management Error Codes and Universal Error Codes.

ID	Error Message
9200001	The application is not an administrator application of the device.
9200002	The administrator application does not have permission to manage the device.
9200010	A conflict policy has been configured.
201	Permission verification failed. The application does not have the permission required to call the API.
202	Permission verification failed. A non-system application calls a system API.
401	Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed.

Example

import { Want } from '@kit.AbilityKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};
try {
  usbManager.disableUsb(wantTemp, true);
  console.info(`Succeeded in disabling USB`);
} catch (err) {
  console.error(`Failed to disabling USB. Code: ${err.code}, message: ${err.message}`);
}

usbManager.isUsbDisabled¹¹⁺

isUsbDisabled(admin: Want): boolean

Queries whether the USB is disabled.

Required permissions: ohos.permission.ENTERPRISE_MANAGE_USB

System capability: SystemCapability.Customization.EnterpriseDeviceManager

Parameters

Name	Type	Mandatory	Description
admin	Want	Yes	EnterpriseAdminExtensionAbility.

Return value

Type	Description
boolean	Returns true if USB is disabled; returns false otherwise.

Error codes

For details about the error codes, see Enterprise Device Management Error Codes and Universal Error Codes.

ID	Error Message
9200001	The application is not an administrator application of the device.
9200002	The administrator application does not have permission to manage the device.
201	Permission verification failed. The application does not have the permission required to call the API.
202	Permission verification failed. A non-system application calls a system API.
401	Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed.

Example

import { Want } from '@kit.AbilityKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};
try {
  let isDisabled = usbManager.isUsbDisabled(wantTemp);
  console.info(`Succeeded in querying if USB is disabled: ${isDisabled}`);
} catch (err) {
  console.error(`Failed to query if USB is disabled. Code: ${err.code}, message: ${err.message}`);
}