harmony 鸿蒙Location Subsystem ChangeLog

2023-02-03
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Location Subsystem ChangeLog

cl.location.1 Migration of System APIs and APIs in API Version 9 to the New @ohos.geoLocationManager.d.ts

APIs in @ohos.geolocation.d.ts do not support throwing error codes. However, APIs in API version 9 and system APIs all need to support throwing error codes. To support this function, all system APIs and APIs in API version 9 in @ohos.geolocation.d.ts are migrated to the newly added @ohos.geoLocationManager.d.ts file, and corresponding error code description is added.

To use system APIs and APIs in API version 9 of the location subsystem, you need to import @ohos.geoLocationManager.

import geoLocationManager from ‘@ohos.geoLocationManager’;

Change Impacts

System APIs and APIs in API version 9 are affected. To ensure normal use of these APIs, you need to import @ohos.geoLocationManager.

import geoLocationManager from ‘@ohos.geoLocationManager’;

Other APIs are not affected.

Key API/Component Changes

(Optional) Adaptation Guide

The following uses enableLocation as an example to show how it is called in the new version:

  import geoLocationManager from '@ohos.geoLocationManager';
  try {
      geoLocationManager.enableLocation((err, data) => {
          if (err) {
              console.log('enableLocation: err=' + JSON.stringify(err));
          }
      });
  } catch (err) {
      console.error("errCode:" + err.code + ",errMessage:" + err.message);
  }

cl.location.2 Location Service Permission Change

From API version 9, the ohos.permission.APPROXIMATELY_LOCATION permission is added for obtaining the approximate location.

If you use API version 9 or later, you need to apply for both the ohos.permission.LOCATION and ohos.permission.APPROXIMATELY_LOCATION permissions. Applying for only the ohos.permission.LOCATION permission will fail.

Change Impacts

Applications using API versions earlier than 9 are not affected. For an application using API version 9 or later, the method for applying for the location permission is changed. The details are as follows:

Before using basic location capabilities, check whether your application has been granted the permission to access the device location information. If not, your application needs to obtain the permission from the user as described below.

The system provides the following location permissions:

ohos.permission.LOCATION
ohos.permission.APPROXIMATELY_LOCATION
ohos.permission.LOCATION_IN_BACKGROUND

If your application needs to access the device location information, it must first apply for required permissions. Specifically speaking:

API versions earlier than 9: Apply for ohos.permission.LOCATION.

API version 9 and later: Apply for ohos.permission.APPROXIMATELY_LOCATION, or apply for ohos.permission.APPROXIMATELY_LOCATION and ohos.permission.LOCATION. Note that ohos.permission.LOCATION cannot be applied for separately.

API Version	Location Permission	Permission Application Result	Location Accuracy
Earlier than 9	ohos.permission.LOCATION	Success	Location accurate to meters
9 and later	ohos.permission.LOCATION	Failure	No location obtained
9 and later	ohos.permission.APPROXIMATELY_LOCATION	Success	Location accurate to 5 kilometers
9 and later	ohos.permission.APPROXIMATELY_LOCATION and ohos.permission.LOCATION	Success	Location accurate to meters

If your application needs to access the device location information when running in the background, it must be configured to be able to run in the background and be granted the ohos.permission.LOCATION_IN_BACKGROUND permission. In this way, the system continues to report device location information after your application moves to the background.

You can declare the required permission in your application’s configuration file. For details, see the permission application guide.

Key API/Component Changes

Applications using API versions earlier than 9 are not affected.

If your application uses API version 9 or later and needs to call APIs requiring the ohos.permission.LOCATION permission in @ohos.geolocation and @ohos.geoLocationManager, you need to apply for the corresponding permission as described previously.