Answers for "react native get width with current component name"

react-native how to get size of screen

import { Dimensions } from 'react-native';

dimensions: {
width: Dimensions.get('window').width,
height: Dimensions.get('window').height
}

width 100% react-native

First, define Dimensions.

import { Dimensions } from "react-native";

var width = Dimensions.get('window').width; //full width
var height = Dimensions.get('window').height; //full height

then, change line1 style like below:

line1: {
    backgroundColor: '#FDD7E4',
    width: width,
},