在嵌套的Text组件中，子Text组件将继承它的父Text组件的样式，当使用嵌套的Text组件时，子Text组件不能覆盖从父Text组件继承而来的样式，只能增加父Text组件没有指定的样式。

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 * @flow
 */

import React,{ Component } from 'react';
import {
  AppRegistry,StyleSheet,Image,Text,TouchableHighlight,View
} from 'react-native';

import ImageEqualEnlarge from './ImageEqualEnlarge.js' 

export default class ViewProject extends Component {

  render() {
    return (
      <View style={styles.container}>
         <Text style={{fontSize:30,textAlign:'center'}}>
           我是30号字体
            <Text style={{fontWeight:'800'}}>
              {'\r\n'}我是加粗30号字体   //如果希望重起一行显示的字符串必须在字符串前加{'\r\n'}否则会接着上一行末显示
               <Text style={{color:'black'}}>
                {'\r\n'}我是加粗黑色30号字体
               </Text>
            </Text>
         </Text>
      
      </View>
    );
  }


}



const styles = StyleSheet.create({
  container: {
    flex:1,justifyContent: 'center',alignItems:'center',backgroundColor:'white',}

});
AppRegistry.registerComponent('ViewProject',() => ViewProject);