1.怎样更换主体类:更换文件./App2，选取对应文件的类名LotsOfGreetings

import { AppRegistry } from 'react-native';
import {LotsOfGreetings} from './App2';
AppRegistry.registerComponent('AHelloWorld', () => LotsOfGreetings);

2.nvm管理node版本

To install or update nvm, you can use the install script using cURL:

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash 

or Wget:

wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash

The script clones the nvm repository to ~/.nvm and adds the source line to your profile (~/.bash_profile, ~/.zshrc, ~/.profile, or ~/.bashrc).

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm

没有理解命令行open .profile

3.Unexpected token (30:33) (null))

语法有误，请检查当前行的语法
正确：placeholder = "开始编辑喜欢的内容"
错误：placeholder : "开始编辑喜欢的内容"

4.Unhandled JS Exception: Stylesheet is not defined

正确：StyleSheet
错误：Stylesheet

5.Unhandled JS Exception: "justifyItems" is not a valid style property.

正确：  
alternativeLayoutButtonContainer: {
    margin: 20,
    flexDirection: 'row',
    justifyContent: 'space-between'
}
错误：
  alternativeLayoutButtonContainer: {
  "margin": 20,
  "flexDirection": "row",
  "justifyItems": "space-between"
}

6.Unhandled JS Exception: ReferenceError: style is not defined

正确：<View style={styles.container}>
错误: <View style={style.container}>
const styles = StyleSheet.create({
    container: {
        flex: 1,
        justifyContent: 'center',
    },
    buttonContainer: {
        margin: 20
    },
    alternativeLayoutButtonContainer: {
        margin: 20,
        flexDirection: 'row',
        justifyContent: 'space-between'
    }
})

7._onPresssButton和_onPresssButton() 的区别

_onPresssButton点击时候调用，_onPresssButton()加载时候调用
<Button title="Press Me" onPress={this._onPresssButton}/>

箭头函数是什么鬼👻？ <Button title="Press Me" onPress={() => this._onPresssButton}/> 和  <Button title="Press Me" onPress={this._onPresssButton}/>作用相同，点击时候调用

8.Unhandled JS Exception: ReferenceError: Platform is not defined

import {
    Image,
    Text,
    View,
    TextInput,
    Button,
    **Platform**,
    Alert,
    StyleSheet,
    TouchableHighlight,
    TouchableOpacity,
    TouchableNativeFeedback,
    TouchableWithoutFeedback,
} from 'react-native';

9.引入json文件

const BadgeData = require('./BadgeData.json');

10.不显示图片资源,没有给Image资源大小

imageStyle: {
   width:80,
   height:80
},

11.Warning: Each child in an array or iterator should have a unique "key" prop.

正确：
 <View key={i} style={styles.outViewStyle}>
     <Image source={{uri: badge.icon}} style={styles.imageStyle}/>

     <Text style={styles.titleStyle}>
         {badge.title}
     </Text>
 </View>

错误：
 <View style={styles.outViewStyle}>
     <Image source={{uri: badge.icon}} style={styles.imageStyle}/>

     <Text style={styles.titleStyle}>
         {badge.title}
     </Text>
 </View>

12.注意：为了使新的图片资源机制正常工作，require中的图片名字必须是一个静态字符串（不能使用变量！因为require是在编译时期执行，而非运行时期执行！）。

// 正确
<Image source={require('./my-icon.png')} />

// 错误
var icon = this.props.active ? 'my-icon-active' : 'my-icon-inactive';
<Image source={require('./' + icon + '.png')} />

// 正确
var icon = this.props.active ? require('./my-icon-active.png') : require('./my-icon-inactive.png');
<Image source={icon} />

13.State的使用 ES5&ES6

ES6:
// 设置改变和初始值
constructor(props) {
   super(props);
   this.state = {
       // 当前页码
       currentPage : 0
   }
}
// 当一帧滚动结束的时候
onMomentSrollEndSelf(event) {
   // 1.求出水平方向偏移量
   var offSetX = event.nativeEvent.contentOffset.x;

   // 2.求出当前页数 -- 取整
   var currentPage = Math.floor(offSetX / width);

   // 3.更新状态机，重绘UI
   this.setState({currentPage:currentPage})

}

ES5:
// 设置改变和初始值
getInitialState() {
   return {
       // 当前页码
       currentPage: 0
   }

}

14.Unhandled JS Exception: TypeError: _reactNative.ListView.dataSource is not a constructor

正确：
var ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 != r2});
错误：
var ds = new ListView.dataSource({rowHasChanged: (r1, r2) => r1 != r2});

15.Failed to load bundle(http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false) with error:(SyntaxError in /Users/Droi/Desktop/RN/AHelloWorld/App4.js: /Users/Droi/Desktop/RN/AHelloWorld/App4.js: Unexpected token (48:33) (null))

正确：
selected={this.state.selectedTabbarItem === 'home'}
错误：
selected:{this.state.selectedTabbarItem === 'second'}

16.Unhandled JS Exception: Invariant Violation: React.Children.only expected to receive a single React element child.

正确：
 {/*首页*/}
 <TabBarIOS.Item
     // icon={require('tabbar_home')}
     // icon={require('../assets/tabbar_home.png')}
     title="首页"
     icon={{uri: 'tabbar_home', scale:3}}
     selected={this.state.selectedItem === 'home'}
     onPress={() => {this.setState({selectedItem: 'home'})}}
 >
     <View></View>
 </TabBarIOS.Item>

错误：
 <TabBarIOS.Item
     // icon={require('tabbar_home')}
     // icon={require('../assets/tabbar_home.png')}
     title="首页"
     icon={{uri: 'tabbar_home', scale:3}}
     selected={this.state.selectedItem === 'home'}
     onPress={() => {this.setState({selectedItem: 'home'})}}
 >

 </TabBarIOS.Item>

17.根据平台适配TabBar

width: Platform.OS === 'ios' ? 30 : 25,

18.Unhandled JS Exception: Invariant Violation: React.Children.only expected to receive a single React element child.

正确：
 <TabNavigator.Item
     title="首页"
     renderIcon={() => <Image source={require('../img/TabBar/tabbar_home.png')} style={styles.iconStyle}></Image>}
     renderSelectedIcon={() => <Image source={require('../img/TabBar/tabbar_home_highlighted.png')} />}
     selected={this.state.selectedTab === 'home'}
     onPress={() => this.setState({ selectedTab: 'home' })}
 >
     <Home/>
 </TabNavigator.Item>

错误：
 <TabNavigator.Item
     title="首页"
     renderIcon={() => <Image source={require('../img/TabBar/tabbar_home.png')} style={styles.iconStyle}></Image>}
     renderSelectedIcon={() => <Image source={require('../img/TabBar/tabbar_home_highlighted.png')} />}
     selected={this.state.selectedTab === 'home'}
     onPress={() => this.setState({ selectedTab: 'home' })}>
 >
     <Home/>
 </TabNavigator.Item>

语法问题：在onPress行末尾的添加了">"，本不应该有的

19.The <Image> component cannot contain children. If you want to render content on top of the image, consider using aboslute positioning.

Good catch. I simple PR replacing Image with ImageBackground will fix this.
<ImageBackground
     ref="backImage"
     source={{uri: 'https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png'}}
     style={styles.backImageStyle}
     // resizeMode='cover'
     // resizeMode='contain'
     resizeMode='center' // resizeMode: PropTypes.oneOf(['cover', 'contain', 'stretch', 'repeat', 'center']),
 >
     <Text style={styles.textStyle}>设置图片为背景</Text>
 </ImageBackground>

20.组件之间的通信

this.props.imageDataArr,在自定义组件里面应该起到哪些作用？
props和state之前又怎样的关系？
{this.renderRow}和{(rowData) => this.renderRow(rowData)}又怎样的区别？

21.修改WebStorm空格个数 ===> 'detect indent'

屏幕快照 2018-01-05 上午11.52.27.png

22.Unhandled JS Exception: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object.

正确：
import CommonCell from './ZHCommonCell';

错误：
let CommonCell = require('./ZHCommonCell');

export default class ZHCommonCell extends Component {
}

23.iphone X在RN里面进行适配一些比较蠢的暂时是配方法

style={{marginTop: ((parseInt(Platform.Version, 10) >= 11 && Platform.OS === 'ios') ? ((width == 375 && height == 812) ? -44 : -20) : 0)}}