React Native 开发之 (08) FlexBox例子

import React, { Component } from ‘react‘;
import {
  AppRegistry,//注册
  StyleSheet,//样式
  Text,     //文本组件
  View,      //视图组件
} from ‘react-native‘;

class ADemo extends Component {
  //初始化方法-->返回具体的组件内容
  render() {
    return(
      <View style={styles.container}>
      <Text>你好 !!</Text>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: ‘center‘,
    alignItems: ‘center‘,
    backgroundColor: ‘red‘,
  },
  welcome: {
    fontSize: 20,
    textAlign: ‘center‘,
    margin: 10,
  }
});

AppRegistry.registerComponent(‘ADemo‘, () => ADemo);