'use strict';
import {
Dimensions,
PixelRatio,
} from 'react-native';
export const deviceWidth = Dimensions.get('window').width; //设备的宽度
export const deviceHeight = Dimensions.get('window').height; //设备的高度
let fontScale = PixelRatio.getFontScale(); //返回字体大小缩放比例
let pixelRatio = PixelRatio.get(); //当前设备的像素密度
const defaultPixel = 2; //iphone6的像素密度
//px转换成dp
const w2 = 750 / defaultPixel;
const h2 = 1334 / defaultPixel;
const scale = Math.min(deviceHeight / h2, deviceWidth / w2); //获取缩放比例
export default function px2dp(size) {
size = Math.round((size * scale + 0.5) * pixelRatio / fontScale);
return size / pixelRatio;
}
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