程序包 ohos.data.distributed.device

接口 DeviceChangeCallback

public interface DeviceChangeCallback

Represents the callback for device status changes.

You need to implement this class and call the KvManager.registerDeviceChangeCallback(ohos.data.distributed.device.DeviceChangeCallback, ohos.data.distributed.device.DeviceFilterStrategy) method to register the DeviceChangeCallback. The callback will be invoked when the status of a device changes (online or offline).

从以下版本开始:

3

SystemCapability

SystemCapability.Data#DATA_DISTRIBUTEDDATAMGR

方法概要

限定符和类型	方法	说明
void	onChanged(DeviceInfo info, DeviceStatus status)	Called when the device status changes.

方法详细资料

onChanged

void onChanged(DeviceInfo info,
               DeviceStatus status)

Called when the device status changes.

This callback is invoked when a device goes online or offline.

参数:

info - Indicates the device information.

status - Indicates the device status after the status change.

从以下版本开始:

3