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A fully-featured messaging app following Material Design guidelines, built on top of the Layer SDK, using the Atlas UI toolkit.

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Atlas Messenger for Android

Atlas Messenger is a fully-featured messaging app following Material Design guidelines, built on top of the Layer SDK, using the Atlas UI toolkit.

Setup

Run git submodule update --init to initialize and pull in the Atlas-Android submodule.

Structure

  • App: Application class.
  • Activities:
    • BaseActivity: Base Activity class for handling menu titles and the menu back button and ensuring the LayerClient is connected when resuming Activities.
    • ConversationsListActivity: List of all Conversations for the authenticated user.
    • MessagesListActivity: List of Messages within a particular Conversation. Also handles message composition and addressing.
    • SettingsActivity: Global application settings.
    • ConversationDetailsActivity: Settings for a particular Conversation.
  • PushNotificationReceiver: Handles com.layer.sdk.PUSH Intents and displays notifications.
  • AuthenticationProvider: Interface used by the Messenger app to authenticate users. Default implementation is provided; see provider below.

Identity Providers

Atlas Messenger uses the AuthenticationProvider interface to authenticate with various backends. Additional identity providers can integrate with Atlas Messenger by implementing AuthenticationProvider and using a custom login Activity.

Provider

To use the sample app, you need to register your app on the [Dashboard] (https://developer.layer.com) and follow the guide to deploy the Sample Identity Provider backend on Heroku. In assets/LayerConfiguration.json, update the "name" and "app_id" to the values displayed on the dashboard; update the "identity_provider_url" to the URL of the sample app you deployed on Heroku.

[ { "name": null, "app_id": null, "identity_provider_url": null } ]

Learn more about the authentication flow [here] (https://docs.layer.com/sdk/android/authentication).

Push Notifications

In order to build Atlas-Messenger, you must generate a google-services.json file so push notifications will be enabled. If this is not done, the Gradle build will fail with the error: File google-services.json is missing. The Google Services Plugin cannot function without it.

To do this, please follow the push notification setup steps here.

To Disable Notification

  • Remove the google-services plugin in the necessary build.gradle files.
  • Set options.useFirebaseCloudMessaging(true) to false in App.generateLayerClient()

Building and releasing

Ensure that the apk is signed using at least signing v1 (and optionally v2). Not signing with v1 will result in a certificate not found error on devices below Android 7.0

Contributing

Atlas is an Open Source project maintained by Layer. Feedback and contributions are always welcome and the maintainers try to process patches as quickly as possible. Feel free to open up a Pull Request or Issue on Github.

License

Atlas is licensed under the terms of the Apache License, version 2.0. Please see the LICENSE file for full details.

Contact

Atlas was developed in San Francisco by the Layer team. If you have any technical questions or concerns about this project feel free to reach out to Layer Support.

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A fully-featured messaging app following Material Design guidelines, built on top of the Layer SDK, using the Atlas UI toolkit.

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