useWindowDimensions

import { useWindowDimensions } from 'react-native';

useWindowDimensions会在屏幕尺寸变化时自动更新获取到的设备width和height值。使用方法如下：

const windowWidth = useWindowDimensions().width;
const windowHeight = useWindowDimensions().height;

示例

• 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.

属性

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.

useWindowDimensions().fontScale;

height

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

useWindowDimensions().height;

scale

The pixel ratio of the device your app is running on.

useWindowDimensions().scale;

A value of 1 indicates PPI/DPI of 96 (76 on some platforms). 2 indicates a Retina or high DPI display.

width

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

useWindowDimensions().width;