Setup

Follow the instructions below to ensure that QuickBlox SDK runs smoothly with your app.

Visit Key Concepts page to learn the most important QuickBlox concepts.

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Get application credentials

QuickBlox application includes everything that brings messaging right into your application - chat, video calling, users, push notifications, etc. To create a QuickBlox application, follow the steps below:

1. Register a new account following this link. Type in your email and password to sign in. You can also sign in with your Google or GitHub accounts.
2. Create the app clicking New app button.
3. Configure the app. Type in the information about your organization into corresponding fields and click Add button.
4. Go to Dashboard => YOUR_APP => Overview section and copy your Application ID, Authorization Key, Authorization Secret, and Account Key .

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Requirements

The minimum requirements for QuickBlox Flutter SDK are:

• iOS 13.0
• Android (minimum version 5.0, API 21)
• Flutter (minimum version 2.12.0)

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Install QuickBlox SDK into your app

To connect QuickBlox to your app just add it into your project dependencies in pubspec.yaml file located in the root project directory => dependencies section.

dependencies:
  flutter:
    sdk: flutter

  # The following adds the QuickBlox SDK to your application.
  quickblox_sdk: 0.17.0

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Add permissions

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For Android

Your app requires adding some specific permissions to access the camera, microphone, internet, and storage permissions.

To configure chat functionality, add permissions below:

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

To configure video chat functionality, add permissions below:

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CAMERA"/>

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For iOS

You can use our SDK in the background mode as well. If you want to receive push notifications when the app goes to background mode, this requires you to add specific app permissions. Under the app build settings, open the Capabilities tab and turn on Remote notifications checkbox only.

If you want to use video calling functionality in the background mode, set the Audio, AirPlay, and Picture in Picture checkboxes.

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Initialize QuickBlox SDK

Initialize the framework with your application credentials. Pass Application ID, Authorization Key, Authorization Secret, and Account Key to the init() method.

String appId = 76730;
String authKey = "XydaWcf8OO9xhGT";
String authSecret = "iiohfdija792hjt";
String accountKey = "7yvNe17TnjNUqDoPwfqp";

void init() async {
  try {
    await QB.settings.init(appId, authKey, authSecret, accountKey);
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

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Initialize QuickBlox SDK without Authorization Key and Secret

You may don’t want to store authKey and authSecret inside an application for security reasons. In such case, you can initialize QuickBlox SDK with applicationId and accountKey only, and store your authKey and authSecret on your backend. But, if so, the implementation of authentication with QuickBlox should be also moved to your backend.

String appId = 76730;
String accountKey = "7yvNe17TnjNUqDoPwfqp";

void init() async {
  try {
    await QB.settings.initWithAppId(appId, accountKey: accountKey);
  } on PlatformException catch (e) {
    // some error occurred, look at the exception message for more details
  }
}

Then using your backend you can authorize a user in the QuickBlox system, send back the user session token, and set it to the QuickBlox SDK using startSessionWithToken() method. You can find out more about this in the Set existing session section.

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Point SDK to enterprise server

To point QuickBlox SDK to the QuickBlox enterprise server, you should pass apiEndpoint and chatEndpoint to the init() method.

String appId = 76730;
String authKey = "XydaWcf8OO9xhGT";
String authSecret = "iiohfdija792hjt";
String accountKey = "7yvNe17TnjNUqDoPwfqp";
String apiEndpoint = "api.endpoint.com";
String chatEndpoint = "chat.enpoint.com";

void init() async {
  try {
    await QB.settings.init(appId, authKey, authSecret, accountKey, apiEndpoint: apiEndpoint, chatEndpoint: chatEndpoint);
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

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Enable auto-reconnect to Chat

QuickBlox Chat runs over XMPP protocol. To receive messages in a real time mode, the application should be connected to the Chat over XMPP protocol. To enable auto-reconnect to Chat, call enableAutoReconnect() method and pass true to it.

void enableAutoReconnect() async {
  try {
    await QB.settings.enableAutoReconnect(true);
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

Thus, if XMPP connection is lost and autoreconnect functionality is enabled, the app connects to Chat automatically. You can disable autoreconnection to Chat by passing enable parameter as false to enableAutoReconnect() method.

void enableAutoReconnect() async {
  try {
    await QB.settings.enableAutoReconnect(false);
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

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Enable logging

Logging functionality allows you to keep track of all events and activities while running your app. As a result, you can monitor the operation of the SDK and improve the debug efficiency. There are 3 logging use cases:

• Server API logging is used to monitor Server API calls.
• Chat logging is used to monitor chat issues.
• WebRTC logging is used to gather issues with video.

1. Go over this section to learn how to enable logging for your iOS app.
2. Go over this section to learn how to enable logging for your Android app.

Enable XMPP logging

void enableCarbons() async {
  try {
    await QB.settings.enableXMPPLogging();
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

Disable XMPP logging

void enableCarbons() async {
  try {
    await QB.settings.disableXMPPLogging();
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

Enable Server API logging

void enableCarbons() async {
  try {
    await QB.settings.enableLogging();
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

Disable Server API logging

void enableCarbons() async {
  try {
    await QB.settings.disableLogging();
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

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Message carbons

Message carbons functionality allows for multi-device support. Thus, all user messages get copied to all their devices so they could keep up with the current state of the conversation. For example, a User A has phone running conversations and desktop running conversations. User B has desktop running conversations. When User B sends a message to User A, the message shows on both the desktop and phone of User A.

Enable message carbons

void enableCarbons() async {
  try {
    await QB.settings.enableCarbons();
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

Disable message carbons

void disableCarbons() async {
  try {
    await QB.settings.disableCarbons();
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}

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Stream management

Stream management has two important features Stanza Acknowledgements and Stream Resumption:

• Stanza Acknowledgements is the ability to know if a stanza or series of stanzas has been received by one’s peer. In other words, a reply is requested on every sent message. If the reply is received, the message is considered as delivered.
• Stream Resumption is the ability to quickly resume a stream that has been terminated. Once a connection is re-established, Stream Resumption is executed. By matching the sequence numbers assigned to each Stanza Acknowledgement a server and client can verify which messages are missing and request to resend missing messages.

Call initStreamManagement() method and pass autoReconnect and messageTimeout parameters to it to enable stream management.

bool autoReconnect = true;
int messageTimeout = 3;

void initStreamManagement() async {
  try {
    await QB.settings.initStreamManagement(messageTimeout, autoReconnect: autoReconnect);
  } on PlatformException catch (e) {
    // Some error occurred, look at the exception message for more details
  }
}