RN热更新加载Webview

送给做马甲包或者rn初学者的福利。

17_04_16__07_11_2018.jpg
大概说下这个流程,关于RN项目创建以及热更新配置这里就不详细说明了,人家RN官网讲的挺好的,附上地址:https://github.com/reactnativecn/react-native-pushy/blob/master/docs/guide.md,配置成功之后就是上图这个样子。咱们在这里最主要说的就是“app”这个文件里的东西,关于流程就是index窗口--->NV(Navagitor.js)--->List(选择跳转)--->Detail(web)废话不说上代码.

一、RN部分

1、index.js

import {
 AppRegistry
} from 'react-native';

import Navagitor from './app/Navagitor';

 AppRegistry.registerComponent('leisureCenterProject', () => Navagitor);

2、Navagitor.js

import React, { Component } from 'react';
import {
     NavigatorIOS
} from 'react-native';
import List from './List';


export default class Navagitor extends Component {
   render() {
     return(
       <NavigatorIOS
         style={{flex:1}}
         initialRoute={{
           component: List,
           title: '列表',
        navigationBarHidden:true,
           passProps: {},
         }}
       />
     );
   }
 }

3、List.js(选择跳转、热更新都在这里面!)

import React, { Component } from 'react';
import {
     StyleSheet,
     Platform,
     View,
     NativeModules,
} from 'react-native';
import {
    checkUpdate
} from 'react-native-update';
var RaicngModel = NativeModules.RaicngModel;
import _updateConfig from '../update.json';

import Webdetail from './Webdetail';

const {appKey} = _updateConfig[Platform.OS];
export default class List extends Component {

    componentWillMount(){
        this.checkUpdate();
    }

    checkUpdate = () => {
        checkUpdate(appKey).then(info => {
                                 if (info.expired) {

                              this.goTo();

                                 } else if (info.upToDate) {


                                 RaicngModel.calliOSActionGameOther('hello');
                                 } else {
                                 this.goTo();

                                 }
                                 }).catch(err => {

                                          });
    };

   render() {
     return (
             <View style={styles.container}>



             </View>
     );
   }

   goTo(){
     this.props.navigator.replace({
       component: Webdetail,
       title: '详情',
       navigationBarHidden:true,
       rightButtonTitle: '收藏',
       onRightButtonPress: function(){
         alert('点击了收藏按钮。');
       }
     });
   }

}

const styles = StyleSheet.create({
                                    container: {   //根View样式
                                    flex: 1,
                                    alignItems: 'center',
                                    justifyContent: 'center',
                                    backgroundColor: 'white'
                                     }
                                  });


4、Webdetail.js(web页面)

import React, { Component } from 'react';
import {
     StyleSheet,
      View,
     WebView,
     Dimensions
} from 'react-native';
const {width, height} = Dimensions.get('window');

export default class Webdetail extends Component {
   render() {
     return (
             <View style={styles.containerweb}>
             <WebView
             style={{width:width,height:height,backgroundColor:'white'}}
             source={{uri:'http://www.jianshu.com/u/29033ec8979e',method: 'GET'}}

             />
             </View>
     );
   }
 }


 const styles = StyleSheet.create({
   
    containerweb: {
         flex: 1,
     backgroundColor: '#f2f2f2',
     paddingTop:0,
                    }
});

二、OC部分

RN文件中的List.js里面引用的OC文件RaicngModel是最重要的,它是oc和js的交互文件。

1、RaicngModel.h文件
#import <Foundation/Foundation.h>

#import <React/RCTBridgeModule.h>


@interface RaicngModel : NSObject<RCTBridgeModule>

@end
2、RaicngModel.m文件
#import "RaicngModel.h"
#import <UIKit/UIKit.h>
#import <React/RCTEventDispatcher.h>
@interface RaicngModel ()
@end
@implementation RaicngModel
@synthesize bridge = _bridge;
//导出模块
RCT_EXPORT_MODULE();    //此处不添加参数即默认为这个OC类的名字

  //2个参数
  RCT_EXPORT_METHOD(calliOSActionGameOther:(NSString *)name)
  {
    dispatch_async(dispatch_get_main_queue(), ^{
      [[NSNotificationCenter defaultCenter]postNotificationName:@"GameOther" object:nil];
    });
  }

@end

三、最好把承载rn的视图RCTRootView封装起来,这样子用的时候就很灵活。

.m文件

#import "LuxuryView.h"
#import <React/RCTRootView.h>
#import <React/RCTBundleURLProvider.h>
#import <RCTHotUpdate/RCTHotUpdate.h>
@implementation LuxuryView
-(instancetype)initWithFrame:(CGRect)frame
  {
    if (self=[super initWithFrame:frame]) {
       NSURL *jsCodeLocation;
#ifdef DEBUG
     jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
//    jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"pushy" withExtension:@"jsbundle"];
#else
      jsCodeLocation=[RCTHotUpdate bundleURL];
#endif
      RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
                                moduleName:@"leisureCenterProject"initialProperties:nil launchOptions:nil];
      [self addSubview:rootView];
      rootView.frame =self.bounds;
    }
    return self;
  }
@end

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