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Blue Button Sample Client Application - Android Version

Introduction

This client demonstrates authenticating to the Blue Button API. It currently does not include FHIR API calls and is being used for authentication testing only. It demonstrates the RFC 8252 - OAuth 2.0 for Native Apps authentication flow utilizing the PKCE extension and a custom URI scheme redirect.

This client is built using the AppAuth SDK and more specifically the AppAuth for Android client SDK.

A frontend client configuration SQLite database was inspired by blog examples from AnujAroshA / Android-SQLite. This enables creating a list of different configurations for testing.

Android Studio was used for a development IDE.

Status and Contributing

This demo app is still a work in progress!

The goal of this demo is to provide examples of the technical interaction with the Blue Button API.

The application is in active development so check back often for updates. Please consider improving this code with your contributions. Pull requests welcome ;)

Prerequisite Android Studio Software Requirement

Please follow the information at the above link for installation instructions on your development platform.

Clone the AppAuth for Android client SDK Repository

git clone https://github.com/openid/AppAuth-Android.git

Clone the test client Repository

git clone https://github.com/dtisza1/bluebutton-sample-client-android

Setup using Android Studio

  1. Import the project via File -> New -> Import project -> Choose: bluebutton-sample-client-android.

  2. Click OK to use gradle wrapper.

  3. Import the SDK module via File -> New -> ImportModule -> Choose: AppAuth-Android. Select the "library" location for import.

  4. Edit the settings.gradle file. Add :library for the include line to become: "include ':app', ':library'".

  5. Sync the gradle files via File -> Sync project with gradle files.

  6. Build the project and library via Build -> Make Project.

  7. Run the client app via Run-> Run 'app'.

    NOTE: If having an issue running in the emulator, disble the "Instant Run" option under settings->Execution.

Setting Up a Sandbox Application

To use this demo application, you will need to signup for a developer account at our https://sandbox.bluebutton.cms.gov/ site.

Please reference our documentation for more information at: https://bluebutton.cms.gov/developers/ .

Once you have your developer account created and you've verified your email address, you'll need to set up an application. Log in to your new account, and select "Applications" -> "Applications You Created" -> "Register New Application". From here, you can fill out the form with the following options:

Scope: [you likely want to select all available]
Name: [your choice]
Client type: Confidential
Authorization grant type: Authorization Code
Redirect uris: gov.cms.bluebutton.oauthtester:/oauth2redirect/example-provider

Once you submit the form, you should receive an application key and secret that can be be added to the test configuration entry of the client app.

Setting Up a test configuration in the android app

In the android app, click the "+" in the upper right to create a new configuration entry. This was designed as a tester type app to have multiple test configurations. You can create one for your sandbox app by setting the following fields:

BB_CLIENT_ID: "<enter client id here>"
BB_CLIENT_SECRET: "<enter client secret here>"
BB_REDIRECT_URI: "gov.cms.bluebutton.oauthtester:/oauth2redirect/example-provider"
BB_AUTHORIZE_URL: "https://sandbox.bluebutton.cms.gov/v1/o/authorize/"
BB_TOKEN_URL: "https://sandbox.bluebutton.cms.gov/v1/o/token/"
BB_USERINFO_URI: "https://sandbox.bluebutton.cms.gov/v1/connect/userinfo"

Press the update button to save the configation and the connect button to test a connection.

The authorization state will persist, so to try another connection you will have to click the logout button before trying again.

This README and demo app is still a work in progress :-)

This README and demo app is still in progress! More to come :-)

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Android mobile OAuth test app for the Blue Button API

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