React Native (Dimensions)

import { StatusBar } from 'expo-status-bar';
import { Dimensions, StyleSheet, Text, View, TouchableWithoutFeedback, TouchableOpacity, TouchableHighlight, Alert, Image, SafeAreaView, Button  } from 'react-native';

export default function App() {
  console.log(Dimensions.get("screen"));

  return (
    <SafeAreaView style={styles.container}>

      <View style = {{

        backgroundColor: 'dodgerblue',
        width: '50%',
        height: 70

      }}>

      </View>

      <StatusBar style="auto" />

    </SafeAreaView>
  );
}

const containerStyle = {backgroundColor: "orange"};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: 'orange'
  },
});