$ npm install react-native-wechat --save //下载组件
$ rnpm link                     //链接库文件
 

#import "../Libraries/LinkingIOS/RCTLinkingManager.h"

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {

  return [RCTLinkingManager application:application openURL:url sourceApplication:sourceApplication annotation:annotation];

}

7.1 registerApp(appid)
	{string} appid  你的appid
	return {promise} 返回一个promise对象
7.2 registerAppWithDescription(appid,appdesc) ->仅支持IOS
	{string} appid  （同上）
	{String} appdesc 你的app的说明
	return {promise}
7.3 isWXAppInstalled() 检查微信是否初始化
7.4 isWXAppSupportApi()检查微信是否支持url
7.5 getApiVersion()    获得微信SDK的版本
7.6 openWXApp()        打开微信app
7.7 sendAuthRequest([scope[,state]]) 发送默认请求，scope：登录时所申请的权限默认为get_simple_userinfo.需要
多个权限的时候以逗号分隔开。
7.8  shareToTimeline(data) 分享信息到朋友圈
      {Object } data 包含以下发送信息
       {string} thumbImage  可以是一个uri或者资源id
       {string} type  信息的类型，可以是 {news|text|imageUrl|imageFile|imageResource|video|audio|file}
       {string} webpageUrl  如果类型是news,分享一个网页链接
       {string}  imageUrl      如果类型是image,提供一个远程的图片链接
       {string}  videoUrl       如果类型是video,提供一个视频
       {string} musicUrl        如果是audio,提供一个音乐
       {string} filePath          提供本地文件
以下例子需要'react-native-wechat'和'react-native-fs'组件
import * as WeChat from 'react-native-wechat';
import fs from 'react-native-fs';
var resolveAssetSource = require('resolveAssetSource'); // along with Image component
// Code example to share text message:
try {
    var result = await  WeChat.shareToTimeline({type: 'text', description: 'I\'m Wechat, :)'});
    console.log('share text message to time line successful', result);
}
catch (e) {
    console.log('share text message to time line failed', e);
}

// Code example to share image url:
// Share raw http(s) image from web will always fail with unknown reason, please use image file or image resource instead
try {
    var result = await WeChat.shareToTimeline({
        type: 'imageUrl',
        title: 'web image',
        description: 'share web image to time line',
        mediaTagName: 'email signature',
        messageAction: undefined,
        messageExt: undefined,
        imageUrl: 'http://www.ncloud.hk/email-signature-262x100.png'
    });
    console.log('share image url to time line successful', result);
}
catch (e) {
    console.log('share image url to time line failed', e);
}

// Code example to share image file:
try {
    var rootPath = fs.DocumentDirectoryPath;
    var savePath = rootPath + '/email-signature-262x100.png'; // like /var/mobile/Containers/Data/Application/B1308E13-35F1-41AB-A20D-3117BE8EE8FE/Documents/email-signature-262x100.png

    await fs.downloadFile('http://www.ncloud.hk/email-signature-262x100.png', savePath);

    var result = await WeChat.shareToTimeline({
        type: 'imageFile',
        title: 'image file download from network',
        description: 'share image file to time line',
        mediaTagName: 'email signature',
        messageAction: undefined,
        messageExt: undefined,
        imageUrl: savePath
    });

    console.log('share image file to time line successful', result);
}
catch (e) {
    console.log('share image file to time line failed', e);
}

// Code example to share image resource:
try {
    var imageResource = require('./email-signature-262x100.png');
    var result = await WeChat.shareToTimeline({
        type: 'imageResource',
        title: 'resource image',
        description: 'share resource image to time line',
        mediaTagName: 'email signature',
        messageAction: undefined,
        messageExt: undefined,
        imageUrl: resolveAssetSource(imageResource).uri
    });
    console.log('share resource image to time line successful', result);
}
catch (e) {
    console.log('share resource image to time line failed', e);
}




  7.9 shareToSession(data) 用法和shareToTimeline用法相似，发送信息给一个朋友或者群组
  7.10 addListener(eventType,listener[,context]) 当事件触发时，会调用一个监听器，返回一个对象
  7.11  once(eventType,listener[,context]) 用法和addListener相似
  7.12  removeAllListener()   删除所有的注册监听器  

import WechatSvc from './services/wechat-svc';   //引用服务
class Emotion extends Component{
  render(){
  ..........  
 }
 WechatSvc.initialize();   初始化事件
}