Platform

Example

---

Reference

Properties

constants

static constants: PlatformConstants;

Returns an object which contains all available common and specific constants related to the platform.

Properties:

Name	Type	Optional	Description
isTesting	boolean	No
reactNativeVersion	object	No	Information about React Native version. Keys are major, minor, patch with optional prerelease and values are numbers.
Version Android	number	No	OS version constant specific to Android.
Release Android	string	No
Serial Android	string	No	Hardware serial number of an Android device.
Fingerprint Android	string	No	A string that uniquely identifies the build.
Model Android	string	No	The end-user-visible name for the Android device.
Brand Android	string	No	The consumer-visible brand with which the product/hardware will be associated.
Manufacturer Android	string	No	The manufacturer of the Android device.
ServerHost Android	string	Yes
uiMode Android	string	No	Possible values are: 'car', 'desk', 'normal','tv', 'watch' and 'unknown'. Read more about Android ModeType.
forceTouchAvailable iOS	boolean	No	Indicate the availability of 3D Touch on a device.
interfaceIdiom iOS	string	No	The interface type for the device. Read more about UIUserInterfaceIdiom.
osVersion iOS	string	No	OS version constant specific to iOS.
systemName iOS	string	No	OS name constant specific to iOS.

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isPad

iOS

static isPad: boolean;

Returns a boolean which defines if device is an iPad.

Type
boolean

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isTV

static isTV: boolean;

Returns a boolean which defines if device is a TV.

Type
boolean

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isTesting

static isTesting: boolean;

Returns a boolean which defines if application is running in Developer Mode with testing flag set.

Type
boolean

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OS

static OS: 'android' | 'ios';

Returns string value representing the current OS.

Type
enum('android', 'ios')

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Version

static Version: 'number' | 'string';

Returns the version of the OS.

Type
number Android string iOS

Methods

select()

static select(config: Record<string, T>): T;

Returns the most fitting value for the platform you are currently running on.

Parameters:

Name	Type	Required	Description
config	object	Yes	See config description below.

Select method returns the most fitting value for the platform you are currently running on. That is, if you're running on a phone, android and ios keys will take preference. If those are not specified, native key will be used and then the default key.

The config parameter is an object with the following keys:

• android (any)
• ios (any)
• native (any)
• default (any)

Example usage:

import {Platform, StyleSheet} from 'react-native';

const styles = StyleSheet.create({
  container: {
    flex: 1,
    ...Platform.select({
      android: {
        backgroundColor: 'green',
      },
      ios: {
        backgroundColor: 'red',
      },
      default: {
        // other platforms, web for example
        backgroundColor: 'blue',
      },
    }),
  },
});

This will result in a container having flex: 1 on all platforms, a green background color on Android, a red background color on iOS, and a blue background color on other platforms.

Since the value of the corresponding platform key can be of type any, select method can also be used to return platform-specific components, like below:

const Component = Platform.select({
  ios: () => require('ComponentIOS'),
  android: () => require('ComponentAndroid'),
})();

<Component />;

const Component = Platform.select({
  native: () => require('ComponentForNative'),
  default: () => require('ComponentForWeb'),
})();

<Component />;