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100% Shared Code Android/iOS Login Example - JSON API

Flutter Login Example

This example uses a ScrollView, JSON Rest API, Navigation, Alert Pop Up, Progress Indicator, Globals, Images in a shared asset folder, and 100% Shared Code. Now with the ability to login with FaceID, TouchID, and Fingerprint Reader on Android.

Getting Started

Clone or Fork Project to get started.


Flutter SDK, Android Studio or Other Compatible IDE.


iOS Integration

Note that this plugin works with both TouchID and FaceID. However, to use the latter, you need to also add:

<string>Why is my app authenticating using face id?</string>

to your Info.plist file. Failure to do so results in a dialog that tells the user your app has not been updated to use TouchID.

Android Integration

Update your project’s AndroidManifest.xml file to include the USE_FINGERPRINT permissions:

<manifest xmlns:android=""
  <uses-permission android:name="android.permission.USE_FINGERPRINT"/>

Sticky Auth

You can set the stickyAuth option on the plugin to true so that plugin does not return failure if the app is put to background by the system. This might happen if the user receives a phone call before they get a chance to authenticate. With stickyAuth set to false, this would result in plugin returning failure result to the Dart app. If set to true, the plugin will retry authenticating when the app resumes.


Fingerprint Reader and TouchID/FaceID

Built With


Please submit a pull request if you want to help the project grow. The goal is to be able to fork the project and have a login module for your app complete so that a new project can be started quickly and customized to the user’s needs.

Please read for details on our code of conduct, and the process for submitting pull requests to us.


We use SemVer for versioning. For the versions available, see the tags on this repository.



This project is licensed under the MIT License - see the file for details