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Android SIWF SDK

Quick Reference

1. Installation

Requirements

  • Android API level 24 or later
  • Java 11+

Installing the SIWF SDK

To install the SIWF SDK via Gradle, add the following to your build.gradle file:

dependencies {
    implementation 'io.projectliberty:siwf:1.0.0'
}

Maven Central Package Page

2. Displaying the SIWF Button

To create a SIWF Button in your Android app, use:

import io.projectliberty.siwf.Siwf
import io.projectliberty.models.SiwfButtonMode

Siwf.CreateSignInButton(
    mode = SiwfButtonMode.PRIMARY,
    authRequest = authRequest
)

authRequest requires the Signed Request Payload in either base64url encoded or structured form.

3. Handling Authorization Callbacks

Update your AndroidManifest.xml with your own intent filters for authentication callbacks. Then, use a BroadcastReceiver() to receive the authorization code with AuthConstants.AUTH_INTENT_KEY. Example:

<activity
    android:name="io.projectliberty.helpers.AuthCallbackActivity"
    ...
    <intent-filter android:autoVerify="true">
        ...
        <data
                android:scheme="http"
                android:host="localhost"
                android:port="3000"
                android:path="/login/callback" />
    </intent-filter>
    <intent-filter android:autoVerify="true">
        ... or ...
        <data
                android:scheme="siwfdemoapp"
                android:host="login" />
    </intent-filter>
</activity>

4. Process Authorization Code

On your backend service, process the authorization code and start your session.

Resources: