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OpenTok Accelerator Sample App for Android

Tokbox is now known as Vonage

This project demonstrates Accelerator Sample App - multiparty, web-based audio, video, and messaging solution for Android Platform. This project utilizes accelerator-core-android.

Under the hood accelerator-core-android utilizes Vonage Video API Android SDK and opentokRTC.

Getting started

Open this project

There are a few ways to open this project.

Android Studio

  1. Go to Android Studio and select File > New > From Version control > Git
  2. Enter git@github.com:opentok/accelerator-sample-apps-android.git into URL field

Command-line + Android Studio

  1. Run git clone git@github.com:opentok/accelerator-sample-apps-android.git to clone project
  2. Go to Android Studio and select File > Open and navigate to the newly cloned directory

Set app config

Before running the application, we need to configure project specific settings. Open the dashboard, select specific application and to get the apiKey, sessionId and token.

Open com.opentok.accelerator.sample.AppConfig file and fill the apiKey, sessionId and token for your Android project.

For production deployment, you must generate the SessionId and token using one of the OpenTok Server SDKs (https://tokbox.com/developer/sdks/server/).

Replace maven dependency with accelerator-core-android code

This project is using implementation 'com.opentok.android:opentok-accelerator-core:x.y.z' dependency to utilize accelerators. This dependency can be replaced with accelerator-core-android source code to facilicate developement of your application.

Remove dependency

  1. Modify the root build.gradle file and remove the custom repository:
maven { 
  url  "http://tokbox.bintray.com/maven" 
}
  1. Modify the app/build.gradle file and remove accelerator dependency:
implementation 'com.opentok.android:opentok-accelerator-core:x.y.z'

Using the repository

  1. Clone the OpenTok Accelerator Core repo.
  2. Go to Android Studio and select New > Module > Import Gradle Project and navigate to the newly cloned directory.

Exploring the code

This section describes the best practices the sample app code uses to implement the communication features.

For detail about the APIs used to develop this sample, see the OpenTok Android SDK Reference and Android API Reference.

Class design

Class Description
MainActivity Implements the UI and media control callbacks.
OpenTokConfig Stores the information required to configure the session and authorize the app to make requests to the backend server.
ActionBarFragment Manages the toolbar for the local audio and video controls, the start/end call, text-chat, and screen sharing buttons.
ScreensharingBar Defines a view to represent the ScreenSharingBar.
Participant Represents an item in the data set
ParticipantAdapter Custom RecyclerView.Adapter responsible for providing views that represent items in the data set.

Session and streams management

The OTWrapper class, included in the accelerator-core-android is the backbone of the communication features for this app.

This class uses the OpenTok API to initiate the client connection to the OpenTok session and manage the audio and video streams.

otWrapper.connect()
val previewConfig = new PreviewConfig.PreviewConfigBuilder().name("myConfig").build()
otWrapper.startPublishingMedia(previewConfig, false)
otWrapper.enableLocalMedia(MediaType.AUDIO, audio)
otWrapper.disconnect()

The BasicListener and AdvancedListener interface monitor OTWraper state changes.

Development and Contributing

Interested in contributing? We ❤️ pull requests! See the Contribution guidelines.

Getting Help

We love to hear from you so if you have questions, comments or find a bug in the project, let us know! You can either:

Further Reading