ReactNative小笔记

import React, { Component } from 'react';
import { AppRegistry, View } from 'react-native';

export default class AlignItemsBasics extends Component {
  render() {
    return (
      // 尝试把`alignItems`改为`flex-start`看看
      // 尝试把`justifyContent`改为`flex-end`看看
      // 尝试把`flexDirection`改为`row`看看
      <View style={{
        flex: 1,
        flexDirection: 'column',
        justifyContent: 'center',
        alignItems: 'stretch',
      }}>
        <View style={{
        flex: 1,
        flexDirection: 'row',
        justifyContent: 'center',
        alignItems: 'center',
      }}>
        <View style={{ 50, height: 50, backgroundColor: 'red'}} />
        <View style={{ 50,height: 50, backgroundColor: 'blue'}} />
        <View style={{ 50,height: 100, backgroundColor: 'black'}} />
      </View>
        </View>
    );
  }
};

一个横向排列，一个竖向排列，子视图居中 https://reactnative.cn/docs/flexbox/

alignItems子视图对齐方式，例如：视图内容横向排列，则是标识竖向对齐方式

同一子视图的flex都设定值的话，子视图的宽高大小将按照此比例分配，不说明宽高情况下为auto自适应宽高

https://blog.csdn.net/u011468619/article/details/72781959  创建页面并绑定跳转

https://reactnative.cn/docs/using-a-listview/ 列表的书写FlatList SectionList

https://reactnative.cn/docs/network/ Fetch进行同步或异步网络请求上传等操作

https://www.jianshu.com/p/4c81995746ea  导航跳转相关