@ohos.distributedHardware.hardwareManager (Distributed Hardware Management) (System API)

The HardwareManager module provides the capability of controlling distributed hardware, including pausing, resuming, and stopping the distributed hardware service on the controlled device.

NOTE

The initial APIs of this module are supported since API version 11. 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

import hardwareManager from '@ohos.distributedHardware.hardwareManager';

HardwareDescriptor

Represents the distributed hardware information.

System capability: SystemCapability.DistributedHardware.DistributedHardwareFWK

Name Type Mandatory Description
type DistributedHardwareType Yes Type of the distributed hardware.
Required permissions: ohos.permission.ACCESS_DISTRIBUTED_HARDWARE
srcNetworkId string No Source device. If this parameter is not specified, it indicates all source devices.
Required permissions: ohos.permission.ACCESS_DISTRIBUTED_HARDWARE

DistributedHardwareType

Enumerates the types of the distributed hardware.

System capability: SystemCapability.DistributedHardware.DistributedHardwareFWK

Name Value Description
ALL 0 All distributed applications.
CAMERA 1 Distributed camera.
SCREEN 8 Distributed screen.
MODEM_MIC 256 Distributed microphone for mobile calls.
MODEM_SPEAKER 512 Distributed speaker for mobile calls.
MIC 1024 Distributed microphone.
SPEAKER 2048 Distributed speaker.

DistributedHardwareErrorCode

Enumerates the error codes used for the distributed hardware.

System capability: SystemCapability.DistributedHardware.DistributedHardwareFWK

Name Value Description
ERR_CODE_DISTRIBUTED_HARDWARE_NOT_STARTED 24200101 The distributed hardware is not started.
ERR_CODE_DEVICE_NOT_CONNECTED 24200102 The source device is not connected.

hardwareManager.pauseDistributedHardware

pauseDistributedHardware(description: HardwareDescriptor): Promise<void>

Pauses the distributed hardware service on the controlled device. This API uses a promise to return the result.

Required permissions: ohos.permission.ACCESS_DISTRIBUTED_HARDWARE

System capability: SystemCapability.DistributedHardware.DistributedHardwareFWK

Parameters

Name Type Mandatory Description
description HardwareDescriptor Yes Hardware information.

Return value

Type Description
Promise<void> Promise that returns no value.

Error codes

ID Error Message
24200101 The specified distributed hardware is not started.
24200102 The specified source device is not connected.

Example

import hardwareManager from '@ohos.distributedHardware.hardwareManager';
import { BusinessError } from '@ohos.base';

try {
  let description: hardwareManager.HardwareDescriptor = {
    type: 1,
    srcNetworkId: '1111'
  };
  hardwareManager.pauseDistributedHardware(description).then(() => {
    console.log('pause distributed hardware successfully');
  }).catch((error: BusinessError) => {
    console.error('pause distributed hardware failed, cause:' + error);
  })
  console.log('pause distributed hardware successfully');
} catch (error) {
  console.error('pause distributed hardware failed:' + error);
}

hardwareManager.resumeDistributedHardware

resumeDistributedHardware(description: HardwareDescriptor): Promise<void>

Resumes the distributed hardware service on the controlled device. This API uses a promise to return the result.

Required permissions: ohos.permission.ACCESS_DISTRIBUTED_HARDWARE

System capability: SystemCapability.DistributedHardware.DistributedHardwareFWK

Parameters

Name Type Mandatory Description
description HardwareDescriptor Yes Hardware information.

Return value

Type Description
Promise<void> Promise that returns no value.

Error codes

ID Error Message
24200101 The specified distributed hardware is not started.
24200102 The specified source device is not connected.

Example

import hardwareManager from '@ohos.distributedHardware.hardwareManager';
import { BusinessError } from '@ohos.base';

try {
  let description: hardwareManager.HardwareDescriptor = {
    type: 1,
    srcNetworkId: '1111'
  };
  hardwareManager.resumeDistributedHardware(description).then(() => {
    console.log('resume distributed hardware successfully');
  }).catch((error: BusinessError) => {
    console.error('resume distributed hardware failed, cause:' + error);
  })
  console.log('resume distributed hardware successfully');
} catch (error) {
  console.error('resume distributed hardware failed:' + error);
}


hardwareManager.stopDistributedHardware

stopDistributedHardware(description: HardwareDescriptor): Promise<void>

Stops the distributed hardware service on the controlled device. This API uses a promise to return the result.

Required permissions: ohos.permission.ACCESS_DISTRIBUTED_HARDWARE

System capability: SystemCapability.DistributedHardware.DistributedHardwareFWK

Parameters

Name Type Mandatory Description
description HardwareDescriptor Yes Hardware information.

Return value

Type Description
Promise<void> Promise that returns no value.

Error codes

ID Error Message
24200101 The specified distributed hardware is not started.
24200102 The specified source device is not connected.

Example

import hardwareManager from '@ohos.distributedHardware.hardwareManager';
import { BusinessError } from '@ohos.base';

try {
  let description: hardwareManager.HardwareDescriptor = {
    type: 1,
    srcNetworkId: '1111'
  };
  hardwareManager.stopDistributedHardware(description).then(() => {
    console.log('stop distributed hardware successfully');
  }).catch((error: BusinessError) => {
    console.error('stop distributed hardware failed, cause:' + error);
  })
  console.log('stop distributed hardware successfully');
} catch (error) {
  console.error('stop distributed hardware failed:' + error);
}