@ohos.enterprise.usbManager (USB Management)

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 provided by this module can be called only by a device administrator application that is enabled.

Modules to Import

import usbManager from '@ohos.enterprise.usbManager';

usbManager.setUsbPolicy

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

Sets the USB read/write policy through the specified device administrator application. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.ENTERPRISE_MANAGE_USB

System capability: SystemCapability.Customization.EnterpriseDeviceManager

System API: This is a system API.

Parameters

Name	Type	Mandatory	Description
admin	Want	Yes	Device administrator application.
usbPolicy	UsbPolicy	Yes	USB read/write policy to set.
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.

ID	Error Message
9200001	the application is not an administrator of the device.
9200002	the administrator application does not have permission to manage the device.

Example

import Want from '@ohos.app.ability.Want';
let wantTemp: Want = {
  bundleName: 'bundleName',
  abilityName: 'abilityName',
};
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 through the specified device administrator application. This API uses a promise to return the result.

Required permissions: ohos.permission.ENTERPRISE_MANAGE_USB

System capability: SystemCapability.Customization.EnterpriseDeviceManager

System API: This is a system API.

Parameters

Name	Type	Mandatory	Description
admin	Want	Yes	Device administrator application.
usbPolicy	UsbPolicy	Yes	USB read/write policy to set.

Return value

Type	Description
Promise<void>	Promise that returns no value. An error object will be thrown if the operation fails.

Error codes

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

ID	Error Message
9200001	the application is not an administrator of the device.
9200002	the administrator application does not have permission to manage the device.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
let wantTemp: Want = {
  bundleName: 'bundleName',
  abilityName: 'abilityName',
};
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}`);
})

UsbPolicy

Enumerates the USB read/write policies.

System capability: SystemCapability.Customization.EnterpriseDeviceManager

System API: This is a system API.

Name	Value	Description
READ_WRITE	0	The USB is readable and writable.
READ_ONLY	1	The USB is read-only.

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