js-apis-geoLocationManager.md

# @ohos.geoLocationManager (Geolocation Manager)

The **geoLocationManager** module provides location services such as Global Navigation Satellite System (GNSS)-based positioning, network positioning, geofencing, as well as geocoding and reverse geocoding.

> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

## Applying for Permissions

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 [Access Control (Permission) Development](../../security/accesstoken-guidelines.md).


## Modules to Import

```ts
import geoLocationManager from '@ohos.geoLocationManager';
```


## ReverseGeoCodeRequest

Defines a reverse geocoding request.

**System capability**: SystemCapability.Location.Location.Geocoder

| Name| Type| Readable| Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| locale | string | Yes| Yes| Language used for the location description. **zh** indicates Chinese, and **en** indicates English.|
| latitude | number | Yes| Yes| Latitude information. A positive value indicates north latitude, and a negative value indicates south latitude. The value ranges from **-90** to **90**.|
| longitude | number | Yes| Yes| Longitude information. A positive value indicates east longitude , and a negative value indicates west longitude . The value ranges from **-180** to **180**.|
| maxItems | number | Yes| Yes| Maximum number of location records to be returned. The specified value must be greater than or equal to **0**. A value smaller than **10** is recommended.|


## GeoCodeRequest

Defines a geocoding request.

**System capability**: SystemCapability.Location.Location.Geocoder

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| locale | string | Yes| Yes| Language used for the location description. **zh** indicates Chinese, and **en** indicates English.|
| description | string | Yes| Yes| Location description, for example, **No. xx, xx Road, Pudong New District, Shanghai**.|
| maxItems | number | Yes| Yes| Maximum number of location records to be returned. The specified value must be greater than or equal to **0**. A value smaller than **10** is recommended.|
| minLatitude | number | Yes| Yes| Minimum latitude. This parameter is used with **minLongitude**, **maxLatitude**, and **maxLongitude** to specify the latitude and longitude ranges. The value ranges from **-90** to **90**.|
| minLongitude | number | Yes| Yes| Minimum longitude. The value ranges from **-180** to **180**.|
| maxLatitude | number | Yes| Yes| Maximum latitude. The value ranges from **-90** to **90**.|
| maxLongitude | number | Yes| Yes| Maximum longitude. The value ranges from **-180** to **180**.|


## GeoAddress

Defines a geographic location.

**System capability**: SystemCapability.Location.Location.Geocoder

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| latitude | number | Yes| No | Latitude information. A positive value indicates north latitude, and a negative value indicates south latitude. The value ranges from **-90** to **90**.|
| longitude | number | Yes| No | Longitude information. A positive value indicates east longitude , and a negative value indicates west longitude . The value ranges from **-180** to **180**.|
| locale | string | Yes| No | Language used for the location description. **zh** indicates Chinese, and **en** indicates English.|
| placeName | string | Yes| No | Landmark of the location.|
| countryCode | string | Yes| No | Country code.|
| countryName | string| Yes| No| Country name.|
| administrativeArea | string | Yes| No| Administrative region name.|
| subAdministrativeArea | string | Yes| No| Sub-administrative region name.|
| locality | string | Yes| No| Locality information.|
| subLocality | string | Yes| No| Sub-locality information.|
| roadName | string | Yes| No|Road name.|
| subRoadName | string | Yes| No| Auxiliary road information.|
| premises | string| Yes| No|House information.|
| postalCode | string | Yes| No| Postal code.|
| phoneNumber | string | Yes| No| Phone number.|
| addressUrl | string | Yes| No| Website URL.|
| descriptions | Array<string> | Yes| No| Additional descriptions.|
| descriptionsSize | number | Yes| No| Total number of additional descriptions. The specified value must be greater than or equal to **0**. A value smaller than **10** is recommended.|
| isFromMock | Boolean | Yes| No| Whether the geographical name is from the mock reverse geocoding function.<br>**System API**: This is a system API.|


## LocationRequest

Defines a location request.

**System capability**: SystemCapability.Location.Location.Core

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| priority | [LocationRequestPriority](#locationrequestpriority) | Yes| Yes| Priority of the location request. This parameter is effective only when **scenario** is set to **UNSET**. If this parameter and **scenario** are set to **UNSET**, the attempt to initiate a location request will fail. For details about the value range, see [LocationRequestPriority](#locationrequestpriority).|
| scenario | [LocationRequestScenario](#locationrequestscenario) | Yes| Yes| Scenario of the location request. The **priority** parameter is effective only when this parameter is set to **UNSET**. If this parameter and **priority** are set to **UNSET**, the attempt to initiate a location request will fail. For details about the value range, see [LocationRequestScenario](#locationrequestscenario).|
| timeInterval | number | Yes| Yes| Time interval at which location information is reported, in seconds. The specified value must be greater than or equal to **0**. The default value is **1**.|
| distanceInterval | number | Yes| Yes| Distance interval at which location information is reported, in meters. The specified value must be greater than or equal to **0**. The default value is **0**.|
| maxAccuracy | number | Yes| Yes| Location accuracy, in meters. This parameter is valid only when the precise location function is enabled, and is invalid when the approximate location function is enabled. The specified value must be greater than or equal to **0**. The default value is **0**.|


## CurrentLocationRequest

Defines the current location request.

**System capability**: SystemCapability.Location.Location.Core

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| priority | [LocationRequestPriority](#locationrequestpriority) | Yes| Yes| Priority of the location request. This parameter is effective only when **scenario** is set to **UNSET**. If this parameter and **scenario** are set to **UNSET**, the attempt to initiate a location request will fail. For details about the value range, see [LocationRequestPriority](#locationrequestpriority).|
| scenario | [LocationRequestScenario](#locationrequestscenario) | Yes| Yes| Scenario of the location request. The **priority** parameter is effective only when this parameter is set to **UNSET**. If this parameter and **priority** are set to **UNSET**, the attempt to initiate a location request will fail. For details about the value range, see [LocationRequestScenario](#locationrequestscenario).|
| maxAccuracy | number | Yes| Yes| Location accuracy, in meters. This parameter is valid only when the precise location function is enabled, and is invalid when the approximate location function is enabled. The specified value must be greater than or equal to **0**. The default value is **0**.|
| timeoutMs | number | Yes| Yes| Timeout duration, in milliseconds. The minimum value is **1000**. The specified value must be greater than or equal to **1000**.|


## SatelliteStatusInfo

Defines the satellite status information.

**System capability**: SystemCapability.Location.Location.Gnss

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| satellitesNumber | number | Yes| No| Number of satellites. The specified value must be greater than or equal to **0**.|
| satelliteIds | Array&lt;number&gt; | Yes| No| Array of satellite IDs. The specified value must be greater than or equal to **0**.|
| carrierToNoiseDensitys | Array&lt;number&gt; | Yes| No| Carrier-to-noise density ratio, that is, **cn0**. The specified value must be greater than **0**.|
| altitudes | Array&lt;number&gt; | Yes| No| Satellite altitude angle information. The value ranges from **-90** to **90**, in degrees.|
| azimuths | Array&lt;number&gt; | Yes| No| Azimuth information. The value ranges from **0** to **360**, in degrees.|
| carrierFrequencies | Array&lt;number&gt; | Yes| No| Carrier frequency, in Hz. The specified value must be greater than or equal to **0**.|


## CachedGnssLocationsRequest

Defines a request for reporting cached GNSS locations.

**System capability**: SystemCapability.Location.Location.Gnss

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| reportingPeriodSec | number | Yes| Yes| Interval for reporting the cached GNSS locations, in milliseconds. The specified value must be greater than **0**.|
| wakeUpCacheQueueFull | boolean | Yes| Yes | **true**: reports the cached GNSS locations to the application when the cache queue is full.<br>**false**: discards the cached GNSS locations when the cache queue is full.|


## Geofence

Defines a GNSS geofence. Currently, only circular geofences are supported.

**System capability**: SystemCapability.Location.Location.Geofence

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| latitude | number | Yes| Yes|Latitude information. The value ranges from **-90** to **90**.|
| longitude | number | Yes|Yes| Longitude information. The value ranges from **-180** to **180**.|
| radius | number | Yes|Yes| Radius of a circular geofence, in meters. The specified value must be greater than **0**.|
| expiration | number | Yes|Yes| Expiration period of a geofence, in milliseconds. The specified value must be greater than **0**.|


## GeofenceRequest

Defines a GNSS geofencing request.

**System capability**: SystemCapability.Location.Location.Geofence

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| scenario | [LocationRequestScenario](#locationrequestscenario) | Yes| Yes |  Location scenario.|
| geofence |  [Geofence](#geofence)| Yes| Yes |  Geofence information.|


## LocationCommand

Defines an extended command.

**System capability**: SystemCapability.Location.Location.Core

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| scenario | [LocationRequestScenario](#locationrequestscenario)  | Yes| Yes | Location scenario.|
| command | string | Yes| Yes | Extended command, in the string format.|


## Location

Defines a location.

**System capability**: SystemCapability.Location.Location.Core

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| latitude | number| Yes| No| Latitude information. A positive value indicates north latitude, and a negative value indicates south latitude. The value ranges from **-90** to **90**.|
| longitude | number| Yes| No| Longitude information. A positive value indicates east longitude , and a negative value indicates west longitude . The value ranges from **-180** to **180**.|
| altitude | number | Yes| No| Location altitude, in meters.|
| accuracy | number | Yes| No| Location accuracy, in meters.|
| speed | number | Yes| No|Speed, in m/s.|
| timeStamp | number | Yes| No| Location timestamp in the UTC format.|
| direction | number | Yes| No| Direction information. The value ranges from **0** to **360**, in degrees.|
| timeSinceBoot | number | Yes| No| Location timestamp since boot.|
| additions | Array&lt;string&gt; | Yes| No| Additional description.|
| additionSize | number | Yes| No| Number of additional descriptions. The specified value must be greater than or equal to **0**. |
| isFromMock | Boolean | Yes| No| Whether the location information is from the mock location function.<br>**System API**: This is a system API.|


## ReverseGeocodingMockInfo

Defines the configuration of the mock reverse geocoding function.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| location |  [ReverseGeoCodeRequest](#reversegeocoderequest) | Yes| Yes| Latitude and longitude information.|
| geoAddress |  [GeoAddress](#geoaddress) | Yes| Yes|Geographical name.|


## LocationMockConfig

Defines the configuration of the mock location function.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| timeInterval | number | Yes| Yes| Time interval at which mock locations are reported, in seconds.|
| locations | Array&lt;[Location](#location)&gt; | Yes| Yes| Array of mocked locations.|


## CountryCode

Defines the country code information.

**System capability**: SystemCapability.Location.Location.Core

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| country | string | Yes| No| Country code.|
| type |  [CountryCodeType](#countrycodetype) | Yes| No| Country code source.|


## LocatingRequiredDataConfig<sup>10+</sup>

Defines the configuration for obtaining the required data of the location service.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| type | [LocatingRequiredDataType](#locatingrequireddatatype10) | Yes| Yes| Type of the required data.|
| needStartScan |  boolean | Yes| Yes| Whether to initiate scanning.|
| scanInterval |  number | Yes| Yes| Scanning interval, in milliseconds. The specified value must be greater than **0**. The default value is **10000**.|
| scanTimeout |  number | Yes| Yes| Scanning timeout interval, in milliseconds. The value ranges from **0** to **600000**. The default value is **10000**.|


## LocatingRequiredData<sup>10+</sup>

Defines the required data of the location service, including the Wi-Fi or Bluetooth scanning result. After obtaining the data, an application can use the data for services such as network positioning.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| wifiData | [WifiScanInfo](#wifiscaninfo10) | Yes| No| Wi-Fi scanning result.|
| bluetoothData |  [BluetoothScanInfo](#bluetoothscaninfo10) | Yes| No| Bluetooth scanning result.|


## WifiScanInfo<sup>10+</sup>

Defines the Wi-Fi scanning information, including the SSID, BSSID, and RSSI of the scanned Wi-Fi hotspot.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| ssid | string | Yes| No| Service set identifier (SSID) of a Wi-Fi hotspot, in UTF-8 format.|
| bssid | string | Yes| No| Base station subsystem identifier (BSSID) of a Wi-Fi hotspot.|
| rssi | number | Yes| No| Received signal strength indicator (RSSI) of a Wi-Fi hotspot, in dBm.|
| frequency | number | Yes| No| Frequency of a Wi-Fi hotspot.|
| timestamp | number | Yes| No| Scanning timestamp.|


## BluetoothScanInfo<sup>10+</sup>

Defines the Bluetooth scanning information.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Type| Readable|Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
| deviceName | string | Yes| No| Name of a Bluetooth device.|
| macAddress | string | Yes| No| MAC address of a Bluetooth device.|
| rssi | number | Yes| No| Signal strength of a Bluetooth device, in dBm.|
| timestamp | number | Yes| No| Scanning timestamp.|


## LocationRequestPriority

Sets the priority of the location request.

**System capability**: SystemCapability.Location.Location.Core

| Name| Value| Description|
| -------- | -------- | -------- |
| UNSET | 0x200 | Priority unspecified.<br>If this option is used, [LocationRequestPriority](#locationrequestpriority) is invalid.|
| ACCURACY | 0x201 | Location accuracy.<br>This policy mainly uses the GNSS positioning technology. In an open area, the technology can achieve the meter-level location accuracy, depending on the hardware performance of the device. However, in a shielded environment, the location accuracy may significantly decrease.|
| LOW_POWER | 0x202 | Power efficiency.<br>This policy mainly uses the base station positioning, WLAN positioning, and Bluetooth positioning technologies to obtain device location in both indoor and outdoor scenarios. The location accuracy depends on the distribution of surrounding base stations, visible WLANs, and Bluetooth devices and therefore may fluctuate greatly. This policy is recommended and can reduce power consumption when your application does not require high location accuracy or when base stations, visible WLANs, and Bluetooth devices are densely distributed.|
| FIRST_FIX | 0x203 | Fast location preferred. Use this option if you want to obtain a location as fast as possible.<br>This policy uses the GNSS positioning, base station positioning, WLAN positioning, and Bluetooth positioning technologies simultaneously to obtain the device location in both the indoor and outdoor scenarios. When all positioning technologies provide a location result, the system provides the most accurate location result for your application. It can lead to significant hardware resource consumption and power consumption.|


## LocationRequestScenario

  Sets the scenario of the location request.

**System capability**: SystemCapability.Location.Location.Core

| Name| Value| Description|
| -------- | -------- | -------- |
| UNSET | 0x300 | Scenario unspecified.<br>If this option is used, [LocationRequestScenario](#locationrequestscenario) is invalid.|
| NAVIGATION | 0x301 | Navigation.<br>This option is applicable when your application needs to obtain the real-time location of a mobile device outdoors, such as navigation for driving or walking.<br>In this scenario, GNSS positioning is used to provide location services to ensure the optimal location accuracy of the system.<br>The location result is reported at a minimum interval of 1 second by default.|
| TRAJECTORY_TRACKING | 0x302 | Trajectory tracking.<br>This option is applicable when your application needs to record user trajectories, for example, the track recording function of sports applications. In this scenario, the GNSS positioning technology is mainly used to ensure the location accuracy.<br>The location result is reported at a minimum interval of 1 second by default.|
| CAR_HAILING | 0x303 | Ride hailing.<br>This option is applicable when your application needs to obtain the current location of a user who is hailing a taxi.<br>The location result is reported at a minimum interval of 1 second by default.|
| DAILY_LIFE_SERVICE | 0x304 | Daily life services.<br>This option is applicable when your application only needs the approximate user location for recommendations and push notifications in scenarios such as when the user is browsing news, shopping online, and ordering food.<br>The location result is reported at a minimum interval of 1 second by default.|
| NO_POWER | 0x305 | Power efficiency. Your application does not proactively start the location service. When responding to another application requesting the same location service, the system marks a copy of the location result to your application. In this way, your application will not consume extra power for obtaining the user location.|


## LocationPrivacyType

Defines the privacy statement type.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Value| Description|
| -------- | -------- | -------- |
| OTHERS | 0 | Other scenarios. Reserved field.|
| STARTUP | 1 | Privacy statement displayed in the startup wizard. The user needs to choose whether to agree with the statement.|
| CORE_LOCATION | 2 | Privacy statement displayed when enabling the location service.|


## CountryCodeType

Defines the country code source type.

**System capability**: SystemCapability.Location.Location.Core

| Name| Value| Description|
| -------- | -------- | -------- |
| COUNTRY_CODE_FROM_LOCALE | 1 | Country code obtained from the language configuration of the globalization module.|
| COUNTRY_CODE_FROM_SIM | 2 | Country code obtained from the SIM card.|
| COUNTRY_CODE_FROM_LOCATION | 3 | Country code obtained using the reverse geocoding function based on the user's location information.|
| COUNTRY_CODE_FROM_NETWORK | 4 | Country code obtained from the cellular network registration information.|


## LocatingRequiredDataType<sup>10+</sup>

Defines the type of the required data of the location service.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

| Name| Value| Description|
| -------- | -------- | -------- |
| WIFI  | 1 | Wi-Fi scanning information.|
| BLUETOOTH | 2 | Bluetooth scanning information.|


## geoLocationManager.on('locationChange')

on(type: 'locationChange', request: LocationRequest, callback: Callback&lt;Location&gt;): void

Subscribes to location change events with a location request initiated.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **locationChange** indicates a location change.|
  | request |  [LocationRequest](#locationrequest) | Yes| Location request.|
  | callback | Callback&lt;[Location](#location)&gt; | Yes| Callback used to receive location change events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.                                       |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let requestInfo:geoLocationManager.LocationRequest = {'priority': geoLocationManager.LocationRequestPriority.FIRST_FIX, 'scenario': geoLocationManager.LocationRequestScenario.UNSET, 'timeInterval': 1, 'distanceInterval': 0, 'maxAccuracy': 0};
  let locationChange = (location:geoLocationManager.Location):void => {
      console.log('locationChanger: data: ' + JSON.stringify(location));
  };
  try {
      geoLocationManager.on('locationChange', requestInfo, locationChange);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  
  ```


## geoLocationManager.off('locationChange')

off(type: 'locationChange', callback?: Callback&lt;Location&gt;): void

Unsubscribes from location change events with the corresponding location request deleted.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **locationChange** indicates a location change.|
  | callback | Callback&lt;[Location](#location)&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.                                       |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let requestInfo:geoLocationManager.LocationRequest = {'priority': geoLocationManager.LocationRequestPriority.FIRST_FIX, 'scenario': geoLocationManager.LocationRequestScenario.UNSET, 'timeInterval': 1, 'distanceInterval': 0, 'maxAccuracy': 0};
  let locationChange = (location:geoLocationManager.Location):void => {
    console.log('locationChanger: data: ' + JSON.stringify(location));
  };
  try {
      geoLocationManager.on('locationChange', requestInfo, locationChange);
      geoLocationManager.off('locationChange', locationChange);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.on('locationEnabledChange')

on(type: 'locationEnabledChange', callback: Callback&lt;boolean&gt;): void

Subscribes to location service status change events.

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **locationEnabledChange** indicates a location service status change.|
  | callback | Callback&lt;boolean&gt; | Yes| Callback used to receive location service status change events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let locationEnabledChange = (state:boolean):void => {
      console.log('locationEnabledChange: ' + JSON.stringify(state));
  }
  try {
      geoLocationManager.on('locationEnabledChange', locationEnabledChange);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.off('locationEnabledChange')

off(type: 'locationEnabledChange', callback?: Callback&lt;boolean&gt;): void;

Unsubscribes from location service status change events.

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **locationEnabledChange** indicates a location service status change.|
  | callback | Callback&lt;boolean&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let locationEnabledChange = (state:boolean):void => {
      console.log('locationEnabledChange: state: ' + JSON.stringify(state));
  }
  try {
      geoLocationManager.on('locationEnabledChange', locationEnabledChange);
      geoLocationManager.off('locationEnabledChange', locationEnabledChange);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.on('cachedGnssLocationsChange')

on(type: 'cachedGnssLocationsChange', request: CachedGnssLocationsRequest, callback: Callback&lt;Array&lt;Location&gt;&gt;): void;

Subscribes to cached GNSS location reports.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **cachedGnssLocationsChange** indicates reporting of cached GNSS locations.|
  | request |  [CachedGnssLocationsRequest](#cachedgnsslocationsrequest) | Yes| Request for reporting cached GNSS location.|
  | callback | Callback&lt;boolean&gt; | Yes| Callback used to receive cached GNSS locations.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.                                       |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let cachedLocationsCb = (locations:Array<geoLocationManager.Location>):void => {
      console.log('cachedGnssLocationsChange: locations: ' + JSON.stringify(locations));
  }
  let requestInfo:geoLocationManager.CachedGnssLocationsRequest = {'reportingPeriodSec': 10, 'wakeUpCacheQueueFull': true};
  try {
      geoLocationManager.on('cachedGnssLocationsChange', requestInfo, cachedLocationsCb);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.off('cachedGnssLocationsChange')

off(type: 'cachedGnssLocationsChange', callback?: Callback&lt;Array&lt;Location&gt;&gt;): void;

Unsubscribes from cached GNSS location reports.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **cachedGnssLocationsChange** indicates reporting of cached GNSS locations.|
  | callback | Callback&lt;boolean&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.                                       |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let cachedLocationsCb = (locations:Array<geoLocationManager.Location>):void => {
      console.log('cachedGnssLocationsChange: locations: ' + JSON.stringify(locations));
  }
  let requestInfo:geoLocationManager.CachedGnssLocationsRequest = {'reportingPeriodSec': 10, 'wakeUpCacheQueueFull': true};
  try {
      geoLocationManager.on('cachedGnssLocationsChange', requestInfo, cachedLocationsCb);
      geoLocationManager.off('cachedGnssLocationsChange');
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.on('satelliteStatusChange')

on(type: 'satelliteStatusChange', callback: Callback&lt;SatelliteStatusInfo&gt;): void;

Subscribes to GNSS satellite status change events.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **satelliteStatusChange** indicates a GNSS satellite status change.|
  | callback | Callback&lt;[SatelliteStatusInfo](#satellitestatusinfo)&gt; | Yes| Callback used to receive GNSS satellite status change events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let gnssStatusCb = (satelliteStatusInfo:geoLocationManager.SatelliteStatusInfo):void => {
      console.log('satelliteStatusChange: ' + JSON.stringify(satelliteStatusInfo));
  }

  try {
      geoLocationManager.on('satelliteStatusChange', gnssStatusCb);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.off('satelliteStatusChange')

off(type: 'satelliteStatusChange', callback?: Callback&lt;SatelliteStatusInfo&gt;): void;

Unsubscribes from GNSS satellite status change events.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **satelliteStatusChange** indicates a GNSS satellite status change.|
  | callback | Callback&lt;[SatelliteStatusInfo](#satellitestatusinfo)&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |


**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let gnssStatusCb = (satelliteStatusInfo:geoLocationManager.SatelliteStatusInfo):void => {
      console.log('satelliteStatusChange: ' + JSON.stringify(satelliteStatusInfo));
  }
  try {
      geoLocationManager.on('satelliteStatusChange', gnssStatusCb);
      geoLocationManager.off('satelliteStatusChange', gnssStatusCb);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.on('nmeaMessage')

on(type: 'nmeaMessage', callback: Callback&lt;string&gt;): void;

Subscribes to GNSS NMEA message change events.

**Required permissions**: ohos.permission.LOCATION and ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **nmeaMessage** indicates a GNSS NMEA message change.|
  | callback | Callback&lt;string&gt; | Yes| Callback used to receive GNSS NMEA message change events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |


**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let nmeaCb = (str:string):void => {
      console.log('nmeaMessage: ' + JSON.stringify(str));
  }

  try {
      geoLocationManager.on('nmeaMessage', nmeaCb );
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.off('nmeaMessage')

off(type: 'nmeaMessage', callback?: Callback&lt;string&gt;): void;

Unsubscribes from GNSS NMEA message change events.

**Required permissions**: ohos.permission.LOCATION and ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **nmeaMessage** indicates a GNSS NMEA message change.|
  | callback | Callback&lt;string&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |


**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let nmeaCb = (str:string):void => {
      console.log('nmeaMessage: ' + JSON.stringify(str));
  }

  try {
      geoLocationManager.on('nmeaMessage', nmeaCb);
      geoLocationManager.off('nmeaMessage', nmeaCb);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.on('gnssFenceStatusChange')

on(type: 'gnssFenceStatusChange', request: GeofenceRequest, want: WantAgent): void;

Subscribes to status change events of the specified geofence.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Geofence

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **gnssFenceStatusChange** indicates a geofence status change.|
  | request |  [GeofenceRequest](#geofencerequest) | Yes| Geofencing request.|
  | want | [WantAgent](js-apis-app-ability-wantAgent.md) | Yes| **WantAgent** used to receive geofence (entrance or exit) events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301600 | Failed to operate the geofence.                                     |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import wantAgent from '@ohos.app.ability.wantAgent';
  import BusinessError from "@ohos.base";

  let wantAgentInfo:wantAgent.WantAgentInfo = {
      wants: [
          {
              bundleName: "com.example.myapplication",
              abilityName: "EntryAbility",
              action: "action1"
          }
      ],
      operationType: wantAgent.OperationType.START_ABILITY,
      requestCode: 0,
      wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
  };
  
  wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => {
    let requestInfo:geoLocationManager.GeofenceRequest = {'scenario': 0x301, "geofence": {"latitude": 121, "longitude": 26, "radius": 100, "expiration": 10000}};
    try {
        geoLocationManager.on('gnssFenceStatusChange', requestInfo, wantAgentObj);
    } catch (err) {
        console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
    }
  });
  ```


## geoLocationManager.off('gnssFenceStatusChange')

off(type: 'gnssFenceStatusChange', request: GeofenceRequest, want: WantAgent): void;

Unsubscribes from status change events of the specified geofence.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Geofence

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **gnssFenceStatusChange** indicates a geofence status change.|
  | request | [GeofenceRequest](#geofencerequest) | Yes| Geofencing request.|
  | want | [WantAgent](js-apis-app-ability-wantAgent.md) | Yes| **WantAgent** used to receive geofence (entrance or exit) events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301600 | Failed to operate the geofence.                                     |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import wantAgent from '@ohos.app.ability.wantAgent';
  import BusinessError from "@ohos.base";
  
  let wantAgentInfo:wantAgent.WantAgentInfo = {
      wants: [
          {
              bundleName: "com.example.myapplication",
              abilityName: "EntryAbility",
              action: "action1",
          }
      ],
      operationType: wantAgent.OperationType.START_ABILITY,
      requestCode: 0,
      wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
  };
  
  wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => {
    let requestInfo:geoLocationManager.GeofenceRequest = {'scenario': 0x301, "geofence": {"latitude": 121, "longitude": 26, "radius": 100, "expiration": 10000}};;
    try {
        geoLocationManager.on('gnssFenceStatusChange', requestInfo, wantAgentObj);
        geoLocationManager.off('gnssFenceStatusChange', requestInfo, wantAgentObj);
    } catch (err) {
        console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
    }
  });
  ```


## geoLocationManager.on('countryCodeChange')

on(type: 'countryCodeChange', callback: Callback&lt;CountryCode&gt;): void;

Subscribes to country code change events.

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **countryCodeChange** indicates a country code change.|
  | callback | Callback&lt;[CountryCode](#countrycode)&gt; | Yes| Callback used to receive country code change events.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301500 | Failed to query the area information.                                       |


**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let callback = (code:geoLocationManager.CountryCode):void => {
      console.log('countryCodeChange: ' + JSON.stringify(code));
  }

  try {
      geoLocationManager.on('countryCodeChange', callback);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.off('countryCodeChange')

off(type: 'countryCodeChange', callback?: Callback&lt;CountryCode&gt;): void;

Unsubscribes from country code change events.

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **countryCodeChange** indicates a country code change.|
  | callback | Callback&lt;[CountryCode](#countrycode)&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301500 | Failed to query the area information.                                       |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let callback = (code:geoLocationManager.CountryCode):void => {
      console.log('countryCodeChange: ' + JSON.stringify(code));
  }

  try {
      geoLocationManager.on('countryCodeChange', callback);
      geoLocationManager.off('countryCodeChange', callback);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.on('locatingRequiredDataChange')<sup>10+</sup>

on(type: 'locatingRequiredDataChange', config: LocatingRequiredDataConfig, callback: Callback&lt;Array&lt;LocatingRequiredData&gt;&gt;): void;

Subscribes to changes in the required data of the location service, including Wi-Fi and Bluetooth scanning information. An application can then determine whether to enable Wi-Fi and Bluetooth scanning based on the return result.

**Required permissions**: ohos.permission.LOCATION and ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **locatingRequiredDataChange** indicates a change in the required data of the location service.|
  | config | [LocatingRequiredDataConfig](#locatingrequireddataconfig10) | Yes| Configuration for obtaining the required data of the location service.|
  | callback | Callback&lt;Array&lt;[LocatingRequiredData](#locatingrequireddata10)&gt;&gt; | Yes| Callback used to receive the required data of the location service.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301800 | Failed to start WiFi or Bluetooth scanning.                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let callback = (code:Array<geoLocationManager.LocatingRequiredData>):void => {
      console.log('locatingRequiredDataChange: ' + JSON.stringify(code));
  }
  let config:geoLocationManager.LocatingRequiredDataConfig = {'type': 1, 'needStartScan': true, 'scanInterval': 10000};
  try {
      geoLocationManager.on('locatingRequiredDataChange', config, callback);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.off('locatingRequiredDataChange')<sup>10+</sup>

off(type: 'locatingRequiredDataChange', callback?: Callback&lt;Array&lt;LocatingRequiredData&gt;&gt;): void;

Unsubscribes from changes in the required data of the location service and stops Wi-Fi and Bluetooth scanning.

**Required permissions**: ohos.permission.LOCATION and ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | string | Yes| Event type. The value **locatingRequiredDataChange** indicates a change in the required data of the location service.|
  | callback | Callback&lt;Array&lt;[LocatingRequiredData](#locatingrequireddata10)&gt;&gt; | No| Callback to unregister. If this parameter is not specified, all callbacks of the specified event type are unregistered.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let callback = (code:Array<geoLocationManager.LocatingRequiredData>):void => {
      console.log('locatingRequiredDataChange: ' + JSON.stringify(code));
  }
  let config:geoLocationManager.LocatingRequiredDataConfig = {'type': 1, 'needStartScan': true, 'scanInterval': 10000};
  try {
      geoLocationManager.on('locatingRequiredDataChange', config, callback);
      geoLocationManager.off('locatingRequiredDataChange', callback);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getCurrentLocation

getCurrentLocation(request: CurrentLocationRequest, callback: AsyncCallback&lt;Location&gt;): void

Obtains the current location. This API uses an asynchronous callback to return the result. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | request | [CurrentLocationRequest](#currentlocationrequest) | Yes| Location request.|
  | callback | AsyncCallback&lt;[Location](#location)&gt; | Yes| Callback used to receive the current location.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.  |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let requestInfo:geoLocationManager.CurrentLocationRequest = {'priority': geoLocationManager.LocationRequestPriority.FIRST_FIX, 'scenario': geoLocationManager.LocationRequestScenario.UNSET,'maxAccuracy': 0};
  let locationChange = (err:BusinessError.BusinessError, location:geoLocationManager.Location):void => {
      if (err) {
          console.log('locationChanger: err=' + JSON.stringify(err));
      }
      if (location) {
          console.log('locationChanger: location=' + JSON.stringify(location));
      }
  };

  try {
      geoLocationManager.getCurrentLocation(requestInfo, locationChange);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```

## geoLocationManager.getCurrentLocation

getCurrentLocation(callback: AsyncCallback&lt;Location&gt;): void;

Obtains the current location. This API uses an asynchronous callback to return the result. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | callback | AsyncCallback&lt;[Location](#location)&gt; | Yes| Callback used to receive the current location.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.  |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let locationChange = (err:BusinessError.BusinessError, location:geoLocationManager.Location) => {
      if (err) {
          console.log('locationChanger: err=' + JSON.stringify(err));
      }
      if (location) {
          console.log('locationChanger: location=' + JSON.stringify(location));
      }
  };

  try {
      geoLocationManager.getCurrentLocation(locationChange);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```

## geoLocationManager.getCurrentLocation

getCurrentLocation(request?: CurrentLocationRequest): Promise&lt;Location&gt;

Obtains the current location. This API uses a promise to return the result. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | request | [CurrentLocationRequest](#currentlocationrequest) | No| Location request.|

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;[Location](#location)&gt;  | [Location](#location) | NA | Promise used to return the current location.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.                                                 |
|3301200 | Failed to obtain the geographical location.  |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let requestInfo:geoLocationManager.CurrentLocationRequest = {'priority': geoLocationManager.LocationRequestPriority.FIRST_FIX, 'scenario': geoLocationManager.LocationRequestScenario.UNSET,'maxAccuracy': 0};
  try {
      geoLocationManager.getCurrentLocation(requestInfo).then((result) => {
          console.log('current location: ' + JSON.stringify(result));
      })  
      .catch((error:number) => {
          console.log('promise, getCurrentLocation: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getLastLocation

getLastLocation(): Location

Obtains the last location.

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Location  | [Location](#location) | NA | Location information.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.  |
|3301100 | The location switch is off.  |
|3301200 |Failed to obtain the geographical location.  |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      let location = geoLocationManager.getLastLocation();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.isLocationEnabled

isLocationEnabled(): boolean

Checks whether the location service is enabled.

**System capability**: SystemCapability.Location.Location.Core

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | boolean  | boolean | NA | Result indicating whether the location service is enabled.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.  |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      let locationEnabled = geoLocationManager.isLocationEnabled();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.enableLocation

enableLocation(callback: AsyncCallback&lt;void&gt;): void;

Enables the location service. This API uses an asynchronous callback to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.MANAGE_SECURE_SETTINGS

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to receive the error message.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

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


## geoLocationManager.enableLocation

enableLocation(): Promise&lt;void&gt;

Enables the location service. This API uses a promise to return the result.

**System API**: This is a system API.

**Required permissions**: ohos.permission.MANAGE_SECURE_SETTINGS

**System capability**: SystemCapability.Location.Location.Core

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;void&gt;  | void | NA | Promise used to return the error message.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.enableLocation().then((result) => {
          console.log('promise, enableLocation succeed');
      })
      .catch((error:number) => {
          console.log('promise, enableLocation: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```

## geoLocationManager.disableLocation

disableLocation(): void;

Disables the location service.

**System API**: This is a system API.

**Required permissions**: ohos.permission.MANAGE_SECURE_SETTINGS

**System capability**: SystemCapability.Location.Location.Core

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.disableLocation();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getAddressesFromLocation

getAddressesFromLocation(request: ReverseGeoCodeRequest, callback: AsyncCallback&lt;Array&lt;GeoAddress&gt;&gt;): void

Converts coordinates into geographic description through reverse geocoding. This API uses an asynchronous callback to return the result. 

**System capability**: SystemCapability.Location.Location.Geocoder

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | request | [ReverseGeoCodeRequest](#reversegeocoderequest) | Yes| Reverse geocoding request.|
  | callback | AsyncCallback&lt;Array&lt;[GeoAddress](#geoaddress)&gt;&gt; | Yes| Callback used to receive the reverse geocoding result.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301300 | Reverse geocoding query failed.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let reverseGeocodeRequest:geoLocationManager.ReverseGeoCodeRequest = {"latitude": 31.12, "longitude": 121.11, "maxItems": 1};
  try {
      geoLocationManager.getAddressesFromLocation(reverseGeocodeRequest, (err, data) => {
          if (err) {
              console.log('getAddressesFromLocation: err=' + JSON.stringify(err));
          }
          if (data) {
              console.log('getAddressesFromLocation: data=' + JSON.stringify(data));
          }
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getAddressesFromLocation

getAddressesFromLocation(request: ReverseGeoCodeRequest): Promise&lt;Array&lt;GeoAddress&gt;&gt;;

Converts coordinates into geographic description through reverse geocoding. This API uses a promise to return the result. 

**System capability**: SystemCapability.Location.Location.Geocoder

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | request | [ReverseGeoCodeRequest](#reversegeocoderequest) | Yes| Reverse geocoding request.|

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;Array&lt;[GeoAddress](#geoaddress)&gt;&gt;  | Array&lt;[GeoAddress](#geoaddress)&gt; | NA | Promise used to return the reverse geocoding result.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301300 | Reverse geocoding query failed.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let reverseGeocodeRequest:geoLocationManager.ReverseGeoCodeRequest = {"latitude": 31.12, "longitude": 121.11, "maxItems": 1};
  try {
      geoLocationManager.getAddressesFromLocation(reverseGeocodeRequest).then((data) => {
          console.log('getAddressesFromLocation: ' + JSON.stringify(data));
      })
      .catch((error:number) => {
          console.log('promise, getAddressesFromLocation: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getAddressesFromLocationName

getAddressesFromLocationName(request: GeoCodeRequest, callback: AsyncCallback&lt;Array&lt;GeoAddress&gt;&gt;): void

Converts geographic description into coordinates through geocoding. This API uses an asynchronous callback to return the result. 

**System capability**: SystemCapability.Location.Location.Geocoder

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | request | [GeoCodeRequest](#geocoderequest) | Yes| Geocoding request.|
  | callback | AsyncCallback&lt;Array&lt;[GeoAddress](#geoaddress)&gt;&gt; | Yes| Callback used to receive the geocoding result.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301400 | Geocoding query failed.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let geocodeRequest:geoLocationManager.GeoCodeRequest = {"description": "No. xx, xx Road, Pudong District, Shanghai", "maxItems": 1};
  try {
      geoLocationManager.getAddressesFromLocationName(geocodeRequest, (err, data) => {
          if (err) {
              console.log('getAddressesFromLocationName: err=' + JSON.stringify(err));
          }
          if (data) {
              console.log('getAddressesFromLocationName: data=' + JSON.stringify(data));
          }
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getAddressesFromLocationName

getAddressesFromLocationName(request: GeoCodeRequest): Promise&lt;Array&lt;GeoAddress&gt;&gt;

Converts geographic description into coordinates through geocoding. This API uses a promise to return the result. 

**System capability**: SystemCapability.Location.Location.Geocoder

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | request | [GeoCodeRequest](#geocoderequest) | Yes| Geocoding request.|

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;Array&lt;[GeoAddress](#geoaddress)&gt;&gt;  | Array&lt;[GeoAddress](#geoaddress)&gt; | NA | Promise used to return the geocoding result.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301400 | Geocoding query failed.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let geocodeRequest:geoLocationManager.GeoCodeRequest = {"description": "No. xx, xx Road, Pudong District, Shanghai", "maxItems": 1};
  try {
      geoLocationManager.getAddressesFromLocationName(geocodeRequest).then((result) => {
          console.log('getAddressesFromLocationName: ' + JSON.stringify(result));
      })
      .catch((error:number) => {
          console.log('promise, getAddressesFromLocationName: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```

## geoLocationManager.isGeocoderAvailable

isGeocoderAvailable(): boolean;

Obtains the (reverse) geocoding service status.

**System capability**: SystemCapability.Location.Location.Geocoder

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | boolean  | boolean | NA | Result indicating whether the (reverse) geocoding service is available.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      let isAvailable = geoLocationManager.isGeocoderAvailable();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getCachedGnssLocationsSize

getCachedGnssLocationsSize(callback: AsyncCallback&lt;number&gt;): void;

Obtains the number of cached GNSS locations. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | callback | AsyncCallback&lt;number&gt; | Yes| Callback used to receive the number of cached GNSS locations. |

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301100 | The location switch is off.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.getCachedGnssLocationsSize((err, size) => {
          if (err) {
              console.log('getCachedGnssLocationsSize: err=' + JSON.stringify(err));
          }
          if (size) {
              console.log('getCachedGnssLocationsSize: size=' + JSON.stringify(size));
          }
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getCachedGnssLocationsSize

getCachedGnssLocationsSize(): Promise&lt;number&gt;;

Obtains the number of cached GNSS locations. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;number&gt;  | number | NA | Promise used to return the number of cached GNSS locations.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301100 | The location switch is off.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.getCachedGnssLocationsSize().then((result) => {
          console.log('promise, getCachedGnssLocationsSize: ' + JSON.stringify(result));
      }) 
      .catch((error:number) => {
          console.log('promise, getCachedGnssLocationsSize: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.flushCachedGnssLocations

flushCachedGnssLocations(callback: AsyncCallback&lt;void&gt;): void;

Obtains all cached GNSS locations and clears the GNSS cache queue. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to receive the error message.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301100 | The location switch is off.   |
|3301200 | Failed to obtain the geographical location.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.flushCachedGnssLocations((err, result) => {
          if (err) {
              console.log('flushCachedGnssLocations: err=' + JSON.stringify(err));
          }
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.flushCachedGnssLocations

flushCachedGnssLocations(): Promise&lt;void&gt;;

Obtains all cached GNSS locations and clears the GNSS cache queue. 

**Permission required**: ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Gnss

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;void&gt;  | void | NA | Promise used to receive the error code.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |
|3301100 | The location switch is off.   |
|3301200 | Failed to obtain the geographical location.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.flushCachedGnssLocations().then((result) => {
          console.log('promise, flushCachedGnssLocations success');
      })
      .catch((error:number) => {
          console.log('promise, flushCachedGnssLocations: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.sendCommand

sendCommand(command: LocationCommand, callback: AsyncCallback&lt;void&gt;): void;

Sends an extended command to the location subsystem. 

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | command |  [LocationCommand](#locationcommand) | Yes| Extended command (string) to be sent.|
  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to receive the error code.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.   |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let requestInfo:geoLocationManager.LocationCommand = {'scenario': 0x301, 'command': "command_1"};
  try {
      geoLocationManager.sendCommand(requestInfo, (err, result) => {
          if (err) {
              console.log('sendCommand: err=' + JSON.stringify(err));
          }
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.sendCommand

sendCommand(command: LocationCommand): Promise&lt;void&gt;;

Sends an extended command to the location subsystem. 

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | command | [LocationCommand](#locationcommand) | Yes| Extended command (string) to be sent.|

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;void&gt;  | void | NA | Promise used to receive the error code.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let requestInfo:geoLocationManager.LocationCommand = {'scenario': 0x301, 'command': "command_1"};
  try {
      geoLocationManager.sendCommand(requestInfo).then((result) => {
          console.log('promise, sendCommand success');
      })  
      .catch((error:number) => {
          console.log('promise, sendCommand: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getCountryCode

getCountryCode(callback: AsyncCallback&lt;CountryCode&gt;): void;

Obtains the current country code.

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | callback | AsyncCallback&lt;[CountryCode](#countrycode)&gt; | Yes| Callback used to receive the country code.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301500 | Failed to query the area information.|

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.getCountryCode((err, result) => {
          if (err) {
              console.log('getCountryCode: err=' + JSON.stringify(err));
          }
          if (result) {
              console.log('getCountryCode: result=' + JSON.stringify(result));
          }
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getCountryCode

getCountryCode(): Promise&lt;CountryCode&gt;;

Obtains the current country code.

**System capability**: SystemCapability.Location.Location.Core

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;[CountryCode](#countrycode)&gt; | [CountryCode](#countrycode) | NA | Promise used to receive the country code.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301500 | Failed to query the area information.|

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.getCountryCode()
      .then((result) => {
          console.log('promise, getCountryCode: result=' + JSON.stringify(result));
      })
      .catch((error:number) => {
          console.log('promise, getCountryCode: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.enableLocationMock

enableLocationMock(): void;

Enables the mock location function.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.|

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.enableLocationMock();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.disableLocationMock

disableLocationMock(): void;

Disables the mock location function.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.|

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.disableLocationMock();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.setMockedLocations

setMockedLocations(config: LocationMockConfig): void;

Sets the mock location information. The mock locations will be reported at the interval specified in this API.

This API can be invoked only after [geoLocationManager.enableLocationMock](#geolocationmanagerenablelocationmock) is called.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | config |  [LocationMockConfig](#locationmockconfig) | Yes| Mock location information, including the interval for reporting the mock locations and the array of the mock locations.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |
|3301100 | The location switch is off.|

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let locations:Array<geoLocationManager.Location> = [
      {"latitude": 30.12, "longitude": 120.11, "altitude": 123, "accuracy": 1, "speed": 5.2, "timeStamp": 16594326109, "direction": 123.11, "timeSinceBoot": 1000000000, "additionSize": 0, "isFromMock": true},
      {"latitude": 31.13, "longitude": 121.11, "altitude": 123, "accuracy": 2, "speed": 5.2, "timeStamp": 16594326109, "direction": 123.11, "timeSinceBoot": 2000000000, "additionSize": 0, "isFromMock": true},
      {"latitude": 32.14, "longitude": 122.11, "altitude": 123, "accuracy": 3, "speed": 5.2, "timeStamp": 16594326109, "direction": 123.11, "timeSinceBoot": 3000000000, "additionSize": 0, "isFromMock": true},
      {"latitude": 33.15, "longitude": 123.11, "altitude": 123, "accuracy": 4, "speed": 5.2, "timeStamp": 16594326109, "direction": 123.11, "timeSinceBoot": 4000000000, "additionSize": 0, "isFromMock": true},
      {"latitude": 34.16, "longitude": 124.11, "altitude": 123, "accuracy": 5, "speed": 5.2, "timeStamp": 16594326109, "direction": 123.11, "timeSinceBoot": 5000000000, "additionSize": 0, "isFromMock": true}
  ];
  let config:geoLocationManager.LocationMockConfig = {"timeInterval": 5, "locations": locations};
  try {
      geoLocationManager.enableLocationMock();
      geoLocationManager.setMockedLocations(config);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.enableReverseGeocodingMock

enableReverseGeocodingMock(): void;

Enables the mock reverse geocoding function.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.enableReverseGeocodingMock();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.disableReverseGeocodingMock

disableReverseGeocodingMock(): void;

Disables the mock geocoding function.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.disableReverseGeocodingMock();
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.setReverseGeocodingMockInfo

setReverseGeocodingMockInfo(mockInfos: Array&lt;ReverseGeocodingMockInfo&gt;): void;

Sets information of the mock reverse geocoding function, including the mapping between a location and geographical name. If the location is contained in the configurations during reverse geocoding query, the corresponding geographical name will be returned.

This API can be invoked only after [geoLocationManager.enableReverseGeocodingMock](#geolocationmanagerenablereversegeocodingmock) is called.

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | mockInfos | Array&lt;[ReverseGeocodingMockInfo](#reversegeocodingmockinfo)&gt; | Yes| Array of information of the mock reverse geocoding function, including a location and a geographical name.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let mockInfos:Array<geoLocationManager.ReverseGeocodingMockInfo> = [
      {"location": {"locale": "zh", "latitude": 30.12, "longitude": 120.11, "maxItems": 1}, "geoAddress": {"locale": "zh", "latitude": 30.12, "longitude": 120.11, "isFromMock": true}},
      {"location": {"locale": "zh", "latitude": 31.12, "longitude": 121.11, "maxItems": 1}, "geoAddress": {"locale": "zh", "latitude": 31.12, "longitude": 121.11, "isFromMock": true}},
      {"location": {"locale": "zh", "latitude": 32.12, "longitude": 122.11, "maxItems": 1}, "geoAddress": {"locale": "zh", "latitude": 32.12, "longitude": 122.11, "isFromMock": true}},
      {"location": {"locale": "zh", "latitude": 33.12, "longitude": 123.11, "maxItems": 1}, "geoAddress": {"locale": "zh", "latitude": 33.12, "longitude": 123.11, "isFromMock": true}},
      {"location": {"locale": "zh", "latitude": 34.12, "longitude": 124.11, "maxItems": 1}, "geoAddress": {"locale": "zh", "latitude": 34.12, "longitude": 124.11, "isFromMock": true}},
  ];
  try {
      geoLocationManager.enableReverseGeocodingMock();
      geoLocationManager.setReverseGeocodingMockInfo(mockInfos);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.isLocationPrivacyConfirmed

isLocationPrivacyConfirmed(type: LocationPrivacyType): boolean;

Checks whether a user agrees with the privacy statement of the location service. This API can only be called by system applications.

**System API**: This is a system API.

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type |  [LocationPrivacyType](#locationprivacytype)| Yes| Privacy statement type, for example, privacy statement displayed in the startup wizard or privacy statement displayed when the location service is enabled.|

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | boolean  | boolean | NA | Whether the user agrees with the privacy statement.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      let isConfirmed = geoLocationManager.isLocationPrivacyConfirmed(1);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.setLocationPrivacyConfirmStatus

setLocationPrivacyConfirmStatus(type: LocationPrivacyType, isConfirmed: boolean): void;

Sets the user confirmation status for the privacy statement of the location service. This API can only be called by system applications.

**System API**: This is a system API.

**Required permissions**: ohos.permission.MANAGE_SECURE_SETTINGS

**System capability**: SystemCapability.Location.Location.Core

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | type | [LocationPrivacyType](#locationprivacytype) | Yes| Privacy statement type, for example, privacy statement displayed in the startup wizard or privacy statement displayed when the location service is enabled.|
  | isConfirmed | boolean | Yes| Whether the user agrees with the privacy statement.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301000 | Location service is unavailable.                                            |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  try {
      geoLocationManager.setLocationPrivacyConfirmStatus(1, true);
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```


## geoLocationManager.getLocatingRequiredData<sup>10+</sup>

getLocatingRequiredData(config: LocatingRequiredDataConfig): Promise&lt;Array&lt;LocatingRequiredData&gt;&gt;;

Obtains the required data of the location service. This API uses a promise to return the result.

**Required permissions**: ohos.permission.LOCATION and ohos.permission.APPROXIMATELY_LOCATION

**System capability**: SystemCapability.Location.Location.Core

**System API**: This is a system API.

**Parameters**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | config | [LocatingRequiredDataConfig](#locatingrequireddataconfig10) | Yes| Configuration for obtaining the required data of the location service.|

**Return value**

  | Name| Type| Mandatory| Description|
  | -------- | -------- | -------- | -------- |
  | Promise&lt;Array&lt;[LocatingRequiredData](#locatingrequireddata10)&gt;&gt;  | [LocatingRequiredData](#locatingrequireddata10) | NA | Promise used to receive the required data of the location service, such as the Wi-Fi and Bluetooth scanning information.|

**Error codes**

For details about the error codes, see [Location Error Codes](../errorcodes/errorcode-geoLocationManager.md).

| ID| Error Message|
| -------- | ---------------------------------------- |
|3301800  | Failed to start WiFi or Bluetooth scanning.                    |

**Example**

  ```ts
  import geoLocationManager from '@ohos.geoLocationManager';
  import BusinessError from "@ohos.base";
  let config:geoLocationManager.LocatingRequiredDataConfig = {'type': 1, 'needStartScan': true, 'scanInterval': 10000};
  try {
      geoLocationManager.getLocatingRequiredData(config).then((result) => {
          console.log('getLocatingRequiredData return: ' + JSON.stringify(result));
      })  
      .catch((error:number) => {
          console.log('promise, getLocatingRequiredData: error=' + JSON.stringify(error));
      });
  } catch (err) {
      console.error("errCode:" + (err as BusinessError.BusinessError).code + ",errMessage:" + (err as BusinessError.BusinessError).message);
  }
  ```