nativescript-dna-deviceinfo

NativeScript DNA Device Info

NativeScript plugin to acquire device info.

Features

• Cross-platform APIs for Android and iOS.
• Offers APIs to obtain device related info.

Changelogs:

• 1.0.0: First release.
• 1.0.1: Minor document correction.
• 1.1.0: New APIs related to battery charging status and its charge level.
• 1.1.1: Updated document.
• 1.2.0: Added an API to retrieve Network Providers, Carriers, related information.
• 1.2.1: Removed unwanted dependencies.

Installation

From the command prompt, go to your app's root folder and execute:

tns plugin add nativescript-dna-deviceinfo

This command automatically installs the necessary files, as well as stores nativescript-dna-deviceinfo as a dependency in your project's package.json file.

Import / require

Various device related utility APIs are accessible from the DeviceInfo class. To import the class, use one of the following forms:

TypeScript:

import { DeviceInfo } from 'nativescript-dna-deviceinfo';

JavaScript:

const nativescript_dna_deviceinfo = require("nativescript-dna-deviceinfo");
const DeviceInfo = nativescript_dna_deviceinfo.DeviceInfo;

APIs

- totalMemory

Returns total memory(RAM) size of a device in bytes.

DeviceInfo.totalMemory();

- freeMemory

Returns free memory(RAM) size of a device in bytes.

DeviceInfo.freeMemory();

- totalStorageSpace

Returns total storage(internal) space of a device in bytes.

DeviceInfo.totalStorageSpace();

- freeStorageSpace

Returns free storage(internal) space of a device in bytes.

DeviceInfo.freeStorageSpace();

- deviceId

Returns a device ID.

DeviceInfo.deviceId();

- deviceName

Returns a device name.

DeviceInfo.deviceName();

- deviceLocale

Returns the locale of a device.

DeviceInfo.deviceLocale();

- deviceCountry

Returns the device country.

DeviceInfo.deviceCountry();

- timezone

Returns the time zone of a device.

DeviceInfo.timezone();

- userAgent

Returns the user agent string of a device.

DeviceInfo.userAgent();

- appName

Returns an app name.

DeviceInfo.appName();

- appVersion

Returns an app version.

DeviceInfo.appVersion();

- bundleId

Returns an app bundle id.

DeviceInfo.bundleId();

- bundleNumber

Returns an app bundle number.

DeviceInfo.bundleNumber();

- systemManufacturer

Returns a device manufacturer.

DeviceInfo.systemManufacturer();

- batteryLevel

Returns the charge level of a device battery.

DeviceInfo.batteryLevel();

- isTablet

Returns 'true' if a device is a tablet, otherwise 'false'.

DeviceInfo.isTablet();

- is24Hour

Returns 'true' if a device configured to a 24-hour clock, otherwise 'false'.

DeviceInfo.is24Hour();

- isEmulator

Returns 'true' if an app is running on an emulator, otherwise 'false'.

DeviceInfo.isEmulator();

- isBatteryCharging

Returns 'true' if a device is plugged in and charging, otherwise 'false'.

DeviceInfo.isBatteryCharging();

- cellularServiceProvider

Returns a list of GSM network providers, carriers, of a device is equipped with.

DeviceInfo.cellularServiceProvider();

Besides other helpful information returned from the API, it can be used to know whether the device has a fast internet connection or not.

• Note for Android users:
  • If the targetSdkVersion is 17, a device with dual sim, the API returns an "active" carrier. Permission ACCESS_COARSE_LOCATION is needed.
  • If the targetSdkVersion is >= 22, a device with dual sim, the API returns both the carriers. Permission READ_PHONE_STATE is needed. To know more about the request permissions process, please visit the link Request App Permissions.

APIs in Action

  printDeviceInfo() { 
    console.log("Free memory: ", formatBytes(DeviceInfo.freeMemory()));
    console.log("Total memory: ", formatBytes(DeviceInfo.totalMemory()));
    console.log("Total storage space: ", formatBytes(DeviceInfo.totalStorageSpace()));
    console.log("Free storage space: ",formatBytes(DeviceInfo.freeStorageSpace()));
    console.log("Device id: ", DeviceInfo.deviceId());
    console.log("Device name: ",  DeviceInfo.deviceName());
    console.log("Device locale: ", DeviceInfo.deviceLocale());
    console.log("Device country: ", DeviceInfo.deviceCountry());
    console.log("Device timezone: ", DeviceInfo.timezone());
    console.log("Device user agent: ", DeviceInfo.userAgent());
    console.log("App name: ", DeviceInfo.appName());
    console.log("App version: ", DeviceInfo.appVersion());
    console.log("App bundle id: ", DeviceInfo.bundleId());
    console.log("App bundle number: ", DeviceInfo.bundleNumber());
    console.log("System manufacturer: ",  DeviceInfo.systemManufacturer());
    console.log("Battery level: ",  Math.round(DeviceInfo.batteryLevel()));
    console.log("Is tablet: ", DeviceInfo.isTablet());
    console.log("Is 24 hour: ", DeviceInfo.is24Hour());
    console.log("Is emulator: ", DeviceInfo.isEmulator());
    console.log("Is battery charing: ",  DeviceInfo.isBatteryCharging());
  }

  formatBytes(bytes, decimals) {
    if (bytes === 0) return '0 GB'
    if (isNaN(parseInt(bytes))) return bytes
    if (typeof bytes === 'string') bytes = parseInt(bytes)
    if (bytes === 0) return '0';
    const k = 1000;
    const dm = decimals + 1 || 3;
    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    const i = Math.floor(Math.log(bytes) / Math.log(k));
    return `${parseFloat((bytes / k ** i).toFixed(dm))} ${sizes[i]}`;
  }

License

MIT license (see LICENSE file)