harmony 鸿蒙Distributed Data Object Changelog

2025-06-12
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Distributed Data Object Changelog

c1.data_object.1 setSessionId Behavior Change

Access Level

Public API

Reason for Change

The change is made to solve invalid data synchronization.

Change Impact

This change is a non-compatible change. In cross-device migration, after setSessionId is called for the distributed data object of the source device, data will not be automatically synchronized to the target device.

Start API Level

Change Since

OpenHarmony SDK 5.0.0.21

Key API/Component Changes

setSessionId/data_object

Adaptation Guide

In cross-device migration development, after setSessionId() is called for a distributed data object on the source device, call save() to save data to the target device.

let dataObject = distributedDataObject.create(context, source);
dataObject.setSessionId(sessionId);
dataObject.save (wantParam.targetDevice as string); // Call save() to save data to the target device.

For details, see Using Distributed Data Objects in Cross-Device Migration.