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Migration Guide for Android

Version 1.x had an issue where a corrupted ymAuthentication token was passed in some cases from SDK to the server. The conversation history was thus mapped to the corrupted ymAuthenticationToken

Version 2.x has fix for this issue and thus a correct ymAuthenticationToken is always passed. However, as the correct ymAuthentication is different from the corrupted token, our server treats this user as a new user which leads to a complete loss of history of user conversations. The user will have a fresh start after updating the app.

Note:

  1. ymAuthentication was corrupted only when it contained = character in 1.x versions
  2. This issue was happening only on Android platform.

For more info feel free to email us at [email protected]

Installation​

Pub.dev​

$ flutter pub add ymchat_flutter

or manually add dependency to the pubspec.yaml

dependencies:
  ymchat_flutter: <version>

Android​

File provider​

note
  • The following key in your strings.xml file is only required for versions below v2.5.0. Starting from version v2.5.0, it is no longer necessary to add this key.

Add following key in your strings.xml file found at yourproject/platforms/android/app/src/main/res/values/strings.xml, this will override default file provider used by SDK.

Overriding the file provider path will avoid conflict with other app using YM CHATBOT SDK. You can use your application id and suffix it with ".fileprovider" Example - applicationId : "com.abc.xyz" then application_id_for_provider = com.abc.xyz.fileprovider

<string name="application_id_for_provider">your.application.id.fileprovider</string>

Usage​

Import the YMChat library in your dart file.

import 'package:ymchat_flutter/ymchat_flutter.dart';

Set botId​

This is the first and compulsary step.

YmChat.setBotId("x1234567890");

YM AuthenticationToken​

ymAuthenticationToken is used to associate an identity of the user with the chat bot.

Whenever chatbot is launched with ymAuthenticationToken it will load the previous chats associated with this user since inception.

YmChat.setAuthenticationToken("token");

Note: History will load only when Show history flag is enabled in the channel settings

Use Secure YM Auth​

You can pass useSecureYmAuth to enable additional security to your chat history. This safeguards your chatbot from unauthorized access even if an unauthorized party tries to access the token.

To enable secure YmAuth, set useSecureYmAuth to true.

YmChat.useSecureYmAuth(true);
note

For more detailed information on how to set up secure YMAuthentication, click here.

Push Notifications​

ymchat_flutter supports firebase notifications. Pass your FCM token in setDeviceToken method.

YmChat.setDeviceToken("token");
note

To set up push notifications, a Firebase service account JSON file is required. You need to map the service account JSON file against your bot ID. For detailed instructions on obtaining and using the Firebase service account JSON file, please refer to the link provided here.

Payload​

A specific journey can be triggered on launch, by passing the slug in the payload.

YmChat.setPayload({ "name": "Integration", "type": "Flutter" });

Payload can be used to pass information from host app to bot. The payload dictionary should be JSON compatible else an error will be thrown

For passing data from bot to app refer bot Bot Events

payload security

Payload is securely passed in HTTPS post request to protect the information passed in it

Trigger journey​

A specific journey can be triggered on launch, by passing the slug in the payload.

YmChat.setPayload({ "JourneySlug" : "checkout-cart" });

On-Premise / Region Specific deployments​

ymchat_flutter supports bots with on-prem deployments. For the bot to work, pass the on-prem URL to setCustomURL() method.

YmChat.setCustomURL("https://your-on-prem-url.com");

If the bot is deployed in a specific region(e.g. r1,r2,r3..rn) on yellow.ai cloud, set the customBaseUrl as follows

YmChat.setCustomURL("https://rx.cloud.yellow.ai");

Here rx = r1,r2,r3,r4,r5 etc

Custom loader​

You can customize the loading image while bot loads. Just pass the URL in the following way. It is recommended to use jpg, png, svg or gif

YmChat.setCustomLoaderUrl("https://example.com/your/custom/image.gif");

V2 bot​

You can enable V2 bot by calling setVersion() method. Default value is 1

YmChat.setVersion(2);

Speech to Text​

Enable Speech to Text​

Speech to text can be enabled and disabled by calling setEnableSpeech(). Default value is false

YmChat.setEnableSpeech(true);

Mic Icon Color​

You can change the mic button icon color using the setMicIconColor function:

YmChat.setMicIconColor("#000000");

Mic Background Color​

To change the background color of the mic button, use the setMicBackgroundColor function:

YmChat.setMicBackgroundColor("#0000FF");

Set Mic Button Movable​

To set the mic button as movable or static, use the setMicButtonMovable function:

YmChat.setMicButtonMovable(true);

Hide Input Bar​

You can hide the input bar while bot is loading by calling the setDisableActionsOnLoad API . Default value is false

YmChat.setDisableActionsOnLoad(true);

Colors​

Status bar​

Status bar color can be set by calling setStatusBarColor method

YmChat.setStatusBarColor("#FFFFFF");

Close button​

Close button color can be set by calling setCloseButtonColor method

YmChat.setCloseButtonColor("#000000");

Theme setup​

You can customize the appearance of your chatbot interface by applying a theme. Using the YMConfig's theme property, you can modify various aspects of your chatbot, including its name, description, primary and secondary colors, icon, and click icon.

Set bot name​

Define your bot's name using setThemeBotName method.

YmChat.setThemeBotName('Demo Bot Name');

Set bot description​

Provide a description for your bot using setThemeBotDescription method.

YmChat.setThemeBotDescription('Demo Bot Description');

Set bot primary color​

Customize the primary color of your bot using setThemePrimaryColor method.

YmChat.setThemePrimaryColor('#000000');

Set bot secondary color​

Define the secondary color of your bot using setThemeSecondaryColor method.

YmChat.setThemeSecondaryColor('#ffffff');

Set bot bubble background color​

Customize the background color of your bot bubble or message using setThemeBotBubbleBackgroundColor method.

YmChat.setThemeBotBubbleBackgroundColor('#0000ff');

Set bot icon​

Choose an icon to represent your bot using setThemeBotIcon method.

YmChat.setThemeBotIcon('https://cdn.yellowmessenger.com/XJFcMhLpN6L91684914460598.png') ;

Set bot click icon​

Define an icon for the minimized state of your bot using setThemeBotClickIcon method.

YmChat.setThemeBotClickIcon('https://cdn.yellowmessenger.com/XJFcMhLpN6L91684914460598.png') ;

iOS​

If you are supporting Speech recognition, add following snippet to Info.plist of the host app

<key>NSMicrophoneUsageDescription</key>
<string>Your microphone will be used to record your speech when you use the Voice feature.</string>
<key>NSSpeechRecognitionUsageDescription</key>
<string>Speech recognition will be used to determine which words you speak into this device&apos;s microphone.</string>

Info.plist is found at path

<YourProjectRootDir>/ios/Runner/info.plist

Present chatbot​

Chat bot can be presented by calling startChatbot(). This method will display full screen chat view

YmChat.startChatbot();

Bot Events​

Bot events are used to pass information from bot to app. For passing events from app to bot refer Payload

  EventChannel _ymEventChannel = const EventChannel("YMChatEvent");
    _ymEventChannel.receiveBroadcastStream().listen((event) {
      Map ymEvent = event;
      log("${ymEvent['code']} : ${ymEvent['data']}");
    });

Bot close event​

Bot close event is separetly sent and it can be handled in following way.

  EventChannel _ymCloseEventChannel = const EventChannel("YMBotCloseEvent");
    _ymCloseEventChannel.receiveBroadcastStream().listen((event) {
      bool ymCloseEvent = event;
      log(event.toString());
    });

Close bot​

Bot can be programmatically closed using closeBot() function

YmChat.closeBot();

Reload bot​

To reload the bot with the same configuration, use the reloadBot() function. This will reload the bot without closing and reopening it.

YmChat.reloadBot();

Register Device​

If you want to receive push notifications without or before launching the bot, you can register your device. To use this api apiKey, botId, deviceToken and ymAuthenticationToken are mandatory parameters.

YmChat.setBotId("botId");
YmChat.setAuthenticationToken("authToken");
YmChat.setDeviceToken("deviceToken");

YmChat.registerDevice(
  apiKey,
  () {
    log("Device token linked successfully");
  },
  (failureMessage) {
    log(failureMessage);
  }
);

If you want to stop receiving push notifications you can unlink the device. To use this api apiKey, botId and deviceToken are mandatory parameters. Device token typically is unlinked when the user logs out of the app.

YmChat.unLinkDeviceToken(
  botId,
  apiKey,
  deviceToken,
  () {
    log("Device token unlinked");
  },
  (failureMessage) {
    log(failureMessage);
  }
);
API Key

API key can be generated/found by visiting https://cloud.yellow.ai -> Overview -> Configure -> API Key section

Unread Message Count​

If you want to show an indicator in your app if there is any unread messages, you can achieve that by calling the given api when bot is in closed state. Pre condition to use this api is that customer must have opened the bot at least once with ymAuthenticationToken otherwise you will receive an error message. To use this api botId and ymAuthenticationToken are mandatory parameters.

YmChat.setBotId("botId");
YmChat.setAuthenticationToken("authToken");

YmChat.getUnreadMessages(
  (count) {
    log("Unread Message Count: ${count}");
  },
  (failureMessage) {
    log(failureMessage);
  }
);

Revalidate Token​

When your authentication token expires, you can use revalidate token to generate a new token.

Once your secure YMAuth is enabled, whenever your authentication token expires, the server will automatically initiate a request to get a fresh token from Yellow.

When you are using the ym-revalidate-token event, your application must include both the apiToken and refreshSession as mandatory parameters. This ensures a seamless and secure revalidation process.

YmChat.setBotId("botId");
YmChat.setAuthenticationToken("authToken");
    
YmChat.revalidateToken("new token", refreshSession);
note

For more detailed information on how to set up secure YMAuthentication, click here.

Send Event To Bot​

If you intend to transmit data back to the bot after it has been successfully launched and is in a running state, you can make use of this API.

To use this api code and data are mandatory parameter.

YmChat.sendEventToBot('code', { "some-key": "some-value" });
note

For more detailed information on how to send event to bot workflow, click here.

Important​

If you encounter any issues with the Android release build, add the following code to the app's proguard-rules.pro file:

-keep public class com.yellowmessenger.ymchat.** {
   *;
}

Demo App​

A demo app can be used as a reference to better understand how this SDK can be integrated in the app https://github.com/yellowmessenger/ymchat-flutter-demo