屏幕适配之获取屏幕的分辨率

import React, {Fragment} from 'react';
import {
  SafeAreaView,
  StyleSheet,
  ScrollView,
  View,
  Text,
  StatusBar,
} from 'react-native';

import {
  Header,
  LearnMoreLinks,
  Colors,
  DebugInstructions,
  ReloadInstructions,
} from 'react-native/Libraries/NewAppScreen';
//引入
var Dimensions = require('Dimensions');

const App = () => {
  return (
    <Fragment>
      <View style={styles.container}>
        <Text>当前屏幕的宽度：{Dimensions.get('window').width}</Text>
        <Text>当前屏幕的高度：{Dimensions.get('window').width}</Text>
        <Text>当前屏幕的分辨率：{Dimensions.get('window').scale}</Text>
      </View>

    </Fragment>
  );
};

const styles = StyleSheet.create({
    container: {
      //占满屏幕
      flex:1,
      //设置主轴的对齐方式
      justifyContent:'center',
      //设置侧轴的对齐方式
      alignItems:'center'
    }
});

export default App;