font size scale css pourcentage react native code example
Example 1: change text size according to screen react native
import { Dimensions, Platform, PixelRatio } from 'react-native';
const {
width: SCREEN_WIDTH,
height: SCREEN_HEIGHT,
} = Dimensions.get('window');
// based on iphone 5s's scale
const scale = SCREEN_WIDTH / 320 ;
export function actuatedNormalize(size) {
const newSize = size * scale
if (Platform.OS === 'ios') {
return Math.round(PixelRatio.roundToNearestPixel(newSize))
} else {
return Math.round(PixelRatio.roundToNearestPixel(newSize)) - 2
}
}
Example 2: react native font based on viewport dimensions
<View>
<Text
numberOfLines={1}
adjustsFontSizeToFit
style={{textAlign:'center',fontSize:30}}
>
{this.props.email}
</Text>
</View>