autologin_android 1.0.1

The platform implementation of the autologin plugin for Android.

The Android implementation of autologin.

On Android CredentialManager is used. The documentation is not very clear, but it seems that with the PlayServices devices back to Android 4.4 are supported. There is currently no documentation how or if it works on non Google Play certificated devices.

Usage

This package is endorsed, which means you can simply use autologin normally. This package will be automatically included in your app when you do, so you do not need to add it to your pubspec.yaml.

However, if you import this package to use any of its APIs directly, you should add it to your pubspec.yaml as usual.

Installation

Change your app to use FlutterFragmentActivity

The Android implementation uses the CredentialManager API to query the credentials. This API requires native asynchronous code. This code is written in Kotlin and uses Coroutines. Since the CredentialManager starts a System Activity the Activity lifecycle needs to be maintained, this is managed with the Android Jetpack's Lifecycle API.

The simplest way to add to your MainActivity the LiveCycleOwner interface is to change the base class of your MainActivity to FlutterFragmentActivity. If you MainActivity is empty you can directly reference the base class in your AndroidManifest, then you can delete your MainActivity entirely. In that case you can simply replace in your AndroidManifest (the default path is android/app/main/src/AndroidManifest.xml) the line: android:name=".MainActivity" by android:name="io.flutter.embedding.android.FlutterFragmentActivity".

Important notes on digital asset links

Digital asset links is a way to link your app with a website also called App Links. In order to provide a full example, the example app needs to be signed correctly. Right now the signing key is not checked in, but might be the CI will get the ability to sign the example app in the future so that you can test it by your own.

For the demo you need to publish a .well-known/assetlinks.json which is mirrored in example/web/.well-known/assetlinks.json. However since this is published on github.io the folder will be visible at https://rekire.github.io/autologin_plugin/.well-known/assetlinks.json instead of https://rekire.github.io/.well-known/assetlinks.json, therefore I uploaded that file in a second repository rekire/rekire.github.io where the latest version is actually hosted. In order to publish "dot" directories I had also to define a _config.yaml.

If you want to test your own setup use the Statement List Generator and Tester.

As simple check if the linking works fine check this link on your Android phone, if that opens in Chrome the Example App without an Intent Chooser then this works correctly.