useWindowDimensions

import {useWindowDimensions} from 'react-native';

useWindowDimensions hook automatically updates all of its values when screen size or font scale changes. You can get your application window's width and height like so:

const {height, width} = useWindowDimensions();

Example

• The useDimensions hook from the community React Native Hooks library aims to make handling screen/window size changes easier to work with.
• React Native Responsive Dimensions also comes with responsive hooks.

Properties

fontScale

useWindowDimensions().fontScale;

The scale of the font currently used. Some operating systems allow users to scale their font sizes larger or smaller for reading comfort. This property will let you know what is in effect.

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height

useWindowDimensions().height;

The height in pixels of the window or screen your app occupies.

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scale

useWindowDimensions().scale;

The pixel ratio of the device your app is running on. The values can be:

• 1 which indicates that one point equals one pixel (usually PPI/DPI of 96, 76 on some platforms).
• 2 or 3 which indicates a Retina or high DPI display.

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width

useWindowDimensions().width;

The width in pixels of the window or screen your app occupies.