react native font scale on responsive screen code example

Example 1: react native responsive font

import { Dimensions } from 'react-native';

const { width, **fontScale** } = Dimensions.get("window");

const styles = StyleSheet.create({
    fontSize: idleFontSize / **fontScale**,
});

Example 2: react native font based on viewport dimensions

<View>
  <Text
    numberOfLines={1}
    adjustsFontSizeToFit
    style={{textAlign:'center',fontSize:30}}
  >
    {this.props.email}
  </Text>
</View>