react images either width or height code example

Example 1: react native asign width to image

import { Dimensions } from "react-native";
const win = Dimensions.get('window');

<Image
  style={{
    width: win.width/2,
    height: win.width/2,
    resizeMode: "contain",
    alignSelf: "center",
    borderWidth: 1,
    borderRadius: 20,
  }}
  source={{uri:'https://facebook.github.io/react/img/logo_og.png'}}
  resizeMode="stretch"
/>

Example 2: react native image when jpeg not fit to container

<Image  style={{    alignSelf: 'center',    height: 150,    width: 150,    borderWidth: 1,    borderRadius: 75  }}  source={{uri:'https://facebook.github.io/react/img/logo_og.png'}}  resizeMode="stretch"/>