> For the complete documentation index, see [llms.txt](https://developers-apps-in-toss.toss.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers-apps-in-toss.toss.im/documentation/api-and-sdk-zh/sdk/domains-api/she-bei/device.getlocation.md).

# Device.getLocation

> 函数式 API `getCurrentLocation`也可以用来使用相同功能。

### 功能说明

获取设备的当前位置一次。用于地图、天气、查找店铺等需要当前位置时。若要持续检测位置变化， `Device.subscribeLocation`请使用它。

如果没有位置权限， `GetCurrentLocationPermissionError`会发生。 `Device.getLocation.getPermission()` / `Device.getLocation.openPermissionDialog()`可以通过它检查·请求权限。

### 类型

```ts
Device.getLocation(options: GetCurrentLocationOptions): Promise<Location>;
```

**参数**

```ts
enum Accuracy {
  Lowest = 1, // 误差范围约3公里以内
  Low = 2, // 误差范围约1公里以内
  Balanced = 3, // 误差范围在数百米以内
  High = 4, // 误差范围约10米以内
  Highest = 5,
  BestForNavigation = 6,
}

type GetCurrentLocationOptions = {
  accuracy: Accuracy;
};
```

**响应**

```ts
type Location = {
  accessLocation?: "FINE" | "COARSE"; // 仅限 Android
  timestamp: number;
  coords: {
    latitude: number;
    longitude: number;
    altitude: number;
    accuracy: number;
    altitudeAccuracy: number;
    heading: number;
  };
};
```

### 错误

错误会以类的形式抛出 — `error instanceof GetCurrentLocationPermissionError`通过它识别。该类可在 `@apps-in-toss/web-framework`中导入。

| 错误类                                 | 说明                                                               |
| ----------------------------------- | ---------------------------------------------------------------- |
| `GetCurrentLocationPermissionError` | 这是位置权限被拒绝的情况。 `Device.getLocation.openPermissionDialog()`可以重新请求。 |

### 示例代码

```js
import {
  Accuracy,
  Device,
  GetCurrentLocationPermissionError,
} from "@apps-in-toss/web-framework";

async function showCurrentPosition() {
  try {
    const location = await Device.getLocation({ accuracy: Accuracy.Balanced });
    console.log(location.coords.latitude, location.coords.longitude);
  } catch (error) {
    if (error instanceof GetCurrentLocationPermissionError) {
      console.warn("没有位置权限。");
      return;
    }
    console.error(error);
  }
}

document
  .getElementById("get-location")
  .addEventListener("click", showCurrentPosition);
```


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