Table of Contents

• Build
• Linking Steps
  • Linking iOS
  • Linking Android with Gradle
• API Documentation
  • registerApp(appid)
  • registerAppWithDescription(appid, appdesc)
  • isWXAppInstalled()
  • isWXAppSupportApi()
  • getApiVersion()
  • openWXApp()
  • sendAuthRequest([scope[, state]])
  • shareToTimeline(data)
  • shareToSession(data)
  • pay(data)
  • addListener(eventType, listener[, context])
  • once(eventType, listener[, context])
  • removeAllListeners()
• Installation
• Community
• Who Use It
• Authors
• License

Build

React-Native bridge static library for WeChat SDK which requires:

• [x] iOS SDK 1.7.2
• [x] Android SDK 221

And react-native-wechat has the following tracking data in open source world:

| type | badge | |-------------|-------------------------------------------------| | NPM | | | Dependency | | | Downloads | |

Linking Steps

Before using this library to work with your app, you should follow the below steps to link this library with your app project, if there is something that not working, please check the list here.

Linking iOS

• Link RCTWeChat library from your node_modules/react-native-wechat/ios folder like react-native's Linking Libraries iOS Guidance, Note: Don't forget to add it to "Build Phases" of your target project.

• Add the following libraries to your "Link Binary with Libraries":

  SystemConfiguration.framework
  CoreTelephony.framework
  libsqlite3.0
  libc++
  libz

• Add "URL Schema" as your app id for "URL type" in Targets > info, See the following screenshot for the view on your XCode

• Only for iOS 9, add wechat and weixin into LSApplicationQueriesSchemes in Targets > info > Custom iOS Target Properties.

or edit Info.plist add:

```
<key>LSApplicationQueriesSchemes</key>
<array>
    <string>weixin</string>
    <string>wechat</string>
</array>
```

• Code the following in AppDelegate.m of your project to enable [LinkingIOS]

  #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];
  }

Linking Android with Gradle

• Add following lines into android/settings.gradle

  include ':RCTWeChat'
  project(':RCTWeChat').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-wechat/android')

• Add following lines into your android/app/build.gradle in section dependencies

  dependencies {
    compile project(':RCTWeChat')    // Add this line only.
  }

• Add following lines into MainActivity.java or MainApplication.java:

  import com.theweflex.react.WeChatPackage;       // Add this line before public class MainActivity
  ...
  
  /**
   * A list of packages used by the app. If the app uses additional views
   * or modules besides the default ones, add more packages here.
   */
  @Override
  protected List<ReactPackage> getPackages() {
    return Arrays.<ReactPackage>asList(
      new MainReactPackage(), 
      new WeChatPackage()        // Add this line
    );
  }

• Create a package named 'wxapi' in your application package and a class named 'WXEntryActivity' in it. This is required to get authorization and sharing response from wechat.

  package your.package.wxapi;
  
  import android.app.Activity;
  import android.os.Bundle;
  import com.theweflex.react.WeChatModule;
  
  public class WXEntryActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      WeChatModule.handleIntent(getIntent());
      finish();
    }
  }

• (Optional) Create a package named 'wxapi' in your application package and a class named 'WXPayEntryActivity' in it. This is required to get payment response from WeChat.

  package your.package.wxapi;
  
  import android.app.Activity;
  import android.os.Bundle;
  import com.theweflex.react.WeChatModule;
  
  public class WXPayEntryActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      WeChatModule.handleIntent(getIntent());
      finish();
    }
  }

• Add activity declare in your AndroidManifest.xml

  <manifest>
    <application>

        ```

• Add these lines to 'proguard-rules.pro':

  -keep class com.tencent.mm.sdk.** {
     *;
  }

API Documentation

react-native-wechat supports the following methods to get information and do something functions with WeChat app.

registerApp(appid)

You should call this function in global, calling over twice would throw an error.

// If you register here
componentDidMount (){
  wechat.registerApp('your appid')
}

• {String} appid the appid you get from WeChat dashboard
• returns {Promise}

registerAppWithDescription(appid, appdesc)

Only available on iOS.

• {String} appid the appid you get from WeChat dashboard
• {String} appdesc the description of your app
• returns {Promise}

isWXAppInstalled()

Check if wechat installed in this app.

• returns {Promise} Contain the result.

isWXAppSupportApi()

Check if wechat support open url.

• returns {Promise} Contain the result.

getApiVersion()

Get api version of WeChat SDK.

• returns {Promise} Contain the result.

openWXApp()

Open WeChat app with an optional callback argument.

• returns {Promise}

sendAuthRequest([scope[, state]])

Send authentication request, namely login.

• {Array|String} scope Scopes of auth request.
• {String} state the state of OAuth2
• returns {Promise}

And it returns:

| name | type | description | |---------|--------|-------------------------------------| | errCode | Number | | | errStr | String | Error message if any error occurred | | openId | String | | | code | String | Authorization code | | url | String | The URL string | | lang | String | The user language | | country | String | The user country |

shareToTimeline(data)

Share a message to timeline (朋友圈).

• {Object} data contain the message to send
  • {String} thumbImage Thumb image of the message, which can be a uri or a resource id.
  • {String} type Type of this message. Can be {news|text|imageUrl|imageFile|imageResource|video|audio|file}
  • {String} webpageUrl Required if type equals news. The webpage link to share.
  • {String} imageUrl Provide a remote image if type equals image.
  • {String} videoUrl Provide a remote video if type equals video.
  • {String} musicUrl Provide a remote music if type equals audio.
  • {String} filePath Provide a local file if type equals file.
  • {String} fileExtension Provide the file type if type equals file.

And returns:

| name | type | description | |---------|--------|-------------------------------------| | errCode | Number | 0 if authorization successed | | errStr | String | Error message if any error occurred |

These example code need 'react-native-chat' and 'react-native-fs' plugin.

import * as WeChat from 'react-native-wechat';
import fs from 'react-native-fs';
let resolveAssetSource = require('resolveAssetSource');

// Code example to share text message:
try {
  let result = await WeChat.shareToTimeline({
    type: 'text', 
    description: 'hello, wechat'
  });
  console.log('share text message to time line successful:', result);
} catch (e) {
  console.error('share text message to time line failed with:', 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 {
  let 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 with:', e);
}

// Code example to share image file:
try {
  let rootPath = fs.DocumentDirectoryPath;
  let savePath = rootPath + '/email-signature-262x100.png';
  console.log(savePath);
  
  /*
   * savePath on iOS may be:
   *  /var/mobile/Containers/Data/Application/B1308E13-35F1-41AB-A20D-3117BE8EE8FE/Documents/email-signature-262x100.png
   *
   * savePath on Android may be:
   *  /data/data/com.wechatsample/files/email-signature-262x100.png
   **/
  await fs.downloadFile('http://www.ncloud.hk/email-signature-262x100.png', savePath);
  let 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: "file://" + savePath // require the prefix on both iOS and Android platform
  });
  console.log('share image file to time line successful:', result);
} catch (e) {
  console.error('share image file to time line failed with:', e);
}

// Code example to share image resource:
try {
  let imageResource = require('./email-signature-262x100.png');
  let 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.error('share resource image to time line failed', e);
}

// Code example to download an word file from web, then share it to WeChat session
// only support to share to session but time line
// iOS code use DocumentDirectoryPath
try {
  let rootPath = fs.DocumentDirectoryPath;
  let fileName = 'signature_method.doc';
  /*
   * savePath on iOS may be:
   *  /var/mobile/Containers/Data/Application/B1308E13-35F1-41AB-A20D-3117BE8EE8FE/Documents/signature_method.doc
   **/ 
  let savePath = rootPath + '/' + fileName;

  await fs.downloadFile('https://open.weixin.qq.com/zh_CN/htmledition/res/assets/signature_method.doc', savePath);
  let result = await WeChat.shareToSession({
    type: 'file',
    title: fileName, // WeChat app treat title as file name
    description: 'share word file to chat session',
    mediaTagName: 'word file',
    messageAction: undefined,
    messageExt: undefined,
    filePath: savePath,
    fileExtension: '.doc'
  });
  console.log('share word file to chat session successful', result);
} catch (e) {
  console.error('share word file to chat session failed', e);
}

//android code use ExternalDirectoryPath
try {
  let rootPath = fs.ExternalDirectoryPath;
  let fileName = 'signature_method.doc';
  /*
   * savePath on Android may be:
   *  /storage/emulated/0/Android/data/com.wechatsample/files/signature_method.doc
   **/
  let savePath = rootPath + '/' + fileName;
  await fs.downloadFile('https://open.weixin.qq.com/zh_CN/htmledition/res/assets/signature_method.doc', savePath);
  let result = await WeChat.shareToSession({
    type: 'file',
    title: fileName, // WeChat app treat title as file name
    description: 'share word file to chat session',
    mediaTagName: 'word file',
    messageAction: undefined,
    messageExt: undefined,
    filePath: savePath,
    fileExtension: '.doc'
  });
  console.log('share word file to chat session successful', result);
}
catch (e) {
  console.error('share word file to chat session failed', e);
}

shareToSession(data)

Similar to shareToTimeline but send message to a friend or a groups.

pay(data)

Create a request to proceeding payment.

const result = await WeChat.pay(
  {
    partnerId: '',  // 商家向财付通申请的商家id
    prepayId: '',   // 预支付订单
    nonceStr: '',   // 随机串，防重发
    timeStamp: '',  // 时间戳，防重发
    package: '',    // 商家根据财付通文档填写的数据和签名
    sign: ''        // 商家根据微信开放平台文档对数据做的签名
  }
);

It returns an object like this:

| name | type | description | |---------|--------|-------------------------------------| | errCode | Number | 0 if authorization successed | | errStr | String | Error message if any error occurred |

addListener(eventType, listener[, context])

Adds a listener to be invoked when events of the specified type are emitted. An optional calling context may be provided.

Return a object like {remove: function} which can be used to remove this listener.

once(eventType, listener[, context])

Similar to addListener, except that the listener is removed after it is invoked once.

removeAllListeners()

Removes all of the registered listeners, including those registered as listener maps.

Installation

$ npm install react-native-wechat --save

Community

• Join us at gitter
• QQ Group: 336021910

Who Use It

• reading: iReading App Write In React-Native

Authors

• Deng Yun
• Xing Zhen
• Yorkie Liu

License

MIT @ WeFlex, Inc