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React Native API

React Native provides some useful APIs that you can use in your apps, for example:

Platform​

Platform API can be used to get information about current platform

import React from "react";
import { Platform, Text, View } from "react-native";

function App() {
  return (
    <View>
      <Text>OS</Text>
      <Text>{Platform.OS}</Text>
      <Text>OS Version</Text>
      <Text>{Platform.Version}</Text>
    </View>
  );
}

Dimensions​

Dimensions API can be used to get app window dimensions.

import React from "react";
import { Dimensions } from "react-native";

function App() {
  const windowWidth = Dimensions.get("window").width;
  const windowHeight = Dimensions.get("window").height;

  // continues...
}
note

Dimensions can change for example, due to rotation. There is also useWindowDimensions hook that automatically updates width and height.

Keyboard​

Keyboard API can be used to listen events and make changes to the keyboard. You can for example dismiss the keyboard using the Keyboard.dismiss() method.

You can find more APIs from the React Native documentation https://reactnative.dev/docs/accessibilityinfo