SocialConnect

SocialConnect simplifies the process of retrieving OAuth tokens from multiple social networks on Android by leveraging the Navigation component. This library has as many providers as ScribeJava has, as SocialConnect is built on top of it.

Setup

Add the JitPack repository in your build.gradle (top level module):

allprojects {
    repositories {
        maven { url "https://jitpack.io" }
    }
}

Apply the SafeArgs plugin (see how) and add next dependency in the build.gradle of your app module:

dependencies {
    compile 'com.github.cookpad:SocialConnect:0.0.3'
}

Usage

ConnectFragment is the entry point of SocialConnect library. To use it, add the connect_graph as a destination to your nav graph file, as follow:

<include app:graph="@navigation/connect_graph" />

<fragment
    android:id="@+id/yourFrgment"
    android:name=".YourFragment"
    tools:layout="@layout/your_fragment">
    <action
        android:id="@+id/action_yourFragment_to_connectFragment"
        app:destination="@id/connect_graph">
        <argument
            android:name="serviceConfig"
            app:argType="cookpad.com.socialconnect.OAuthServiceConfig" />
        <argument
            android:name="keyRequestCode"
            app:argType="string" />
    </action>
</fragment>

This will generate YourFragmentDirections.actionYourFragmentToConnectFragment which expects an OAuthServiceConfig instance and provides the NavDirection to access ConnectFragment from your nav graph.

OAuth1 with Twitter provider:

findNavController().navigate(
    ConnectionsFragmentDirections.actionConnectionsFragmentToConnectFragment(
        keyRequestCode = RESULT_CONNECTION_TWITTER,
        serviceConfig = OAuth10ServiceConfig(
            apiKey = API_KEY_TWITTER,
            apiSecret = API_SECRET,
            callback = CALLBACK_URL,
            clazz = TwitterApi::class.java
        )
    )
)

OAuth2 with Github provider:

findNavController().navigate(
    ConnectionsFragmentDirections.actionConnectionsFragmentToConnectFragment(
        keyRequestCode = RESULT_CONNECTION_GITHUB,
        serviceConfig = OAuth20ServiceConfig(
            apiKey = API_KEY_GITHUB,
            apiSecret = API_SECRET_GITHUB,
            callback = CALLBACK_URL,
            clazz = GitHubApi::class.java
        )
    )
)

To retrieve the Token back, listen for changes on findNavController().currentBackStackEntry?.savedStateHandle expecting a type of ConnectResult: (see for more info about how retrieve a result to the previous Destination with the navigation Component)

findNavController().currentBackStackEntry?.savedStateHandle
            ?.getLiveData<ConnectResult>(RESULT_CONNECTION_TWITTER)
            ?.observe(viewLifecycleOwner, Observer { connectResult ->
                processConnectResult(nameProvider = "Twitter", connectResult = connectResult)
            })

findNavController().currentBackStackEntry?.savedStateHandle
    ?.getLiveData<ConnectResult>(RESULT_CONNECTION_GITHUB)
    ?.observe(viewLifecycleOwner, Observer { connectResult ->
        processConnectResult(nameProvider = "Github", connectResult = connectResult)
    })


private fun processConnectResult(nameProvider: String, connectResult: ConnectResult) {
    when (connectResult) {
        is ConnectResultOk -> {
            val token = connectResult.token
            val message = when (token) {
                is OAuth1AccessToken -> "Provider: $nameProvider, Token: ${token.token} Secret:${token.tokenSecret}"
                is OAuth2AccessToken -> "Provider: $nameProvider, AccessToken: ${token.accessToken}"
                else -> throw IllegalStateException(token::class.java.canonicalName)
            }
            Toast.makeText(requireContext(), message, Toast.LENGTH_LONG).show()
        }
        is ConnectResultError -> {
            Toast.makeText(requireContext(), connectResult.error.message, Toast.LENGTH_LONG).show()
        }
    }
}

Sample app

Check the :app Gradle module for a showcase of Twitter and Github providers. But prior to build the module, you need to provide the app/src/main/java/cookpad/com/sample/Credentials.kt file with the credentials of both your Twitter and your Github app:

const val API_KEY_TWITTER = ""
const val API_SECRET = ""

const val API_KEY_GITHUB = ""
const val API_SECRET_GITHUB = ""

const val CALLBACK_URL = ""

Proguard

Proguard is already handled via the consumer-rules.pro config file.

Credits

Oauth core authentication: ScribeJava