0.1.0
📌
Quickstart Guides
📘
SDK Reference
🛡️ Protecting Your Account
🗝️ Getting Access Token
Sign In with Device
Our Flutter SDK offers the easiest way to integrate Cotter's Sign In with Device. You can simply call a function and it does most of the heavy lifting and authentication for you.
There are major updates planned for this feature. Contact us in Slack so we can help you prepare for it.
What you're building
Sign In with Device using Cotter's Flutter SDK
Import Cotter as a dependency
Add Cotter to your
pubspec.yaml , then run flutter pub get.1
dependencies:
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cotter:
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Check the latest releases in pub.dev. You may need to restart your flutter for it to run pod install (stop flutter run and re run it).
Step 1: Import and Initialize Cotter
Import Cotter in your
lib/main.dart, then initialize it inside HomePageState.1
import 'package:cotter/cotter.dart'; // Import Cotter
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class HomePageState extends State {
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...
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// 1️⃣ Initialize Cotter
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Cotter cotter = new Cotter(apiKeyID: API_KEY_ID); // 👈 Specify your API KEY ID here
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// 2️⃣ TODO: Make Sign Up Function
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// 3️⃣ TODO: Make Login Function
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@override
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Widget build(BuildContext context) { ... }
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}
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Step 2: Make a Sign Up Function
To sign up, call
cotter.signUpWithDevice and input the user's email. This will create a new user in Cotter and trust the current device to allow logins. This function returns the User object.1
// 2️⃣ Make Sign Up Function
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void signUp(BuildContext context) async {
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try {
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// 🚀 One-line Sign Up
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// Create a new user in Cotter and trust the current device
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var user = await cotter.signUpWithDevice(identifier: inputController.text);
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print(user);
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} catch (e) {
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print(e);
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}
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}
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(Optional) You can also verify the user's email or phone number at this step
To verify the user's email or phone number, follow this guide after you've finished this one.
Step 3: Make a Login Function
To sign in, call
cotter.signInWithDevice . If the user is logging-in from a device that they trust, they'll automatically be approved. This function returns the Event object.1
// 3️⃣ Make Login Function
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void login(BuildContext context) async {
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try {
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// 🚀 One-line Login
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var event = await cotter.signInWithDevice(identifier: inputController.text, context: context);
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print(event);
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} catch (e) {
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print(e);
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}
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}
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To get the Logged-in User Info and Access Token, follow this section:
Logging-in From a Trusted Device
If the user logged-in from a trusted device, their login request will automatically be approved.
Logging-in From a Non-Trusted Device
If the user logged-in from a different device that is not trusted, they will be presented with a prompt asking them to approve the login from their trusted phone inside your app. We'll cover this in the next guide.
Validating Cotter's Access Token
Checkout how to verify the OAuth Tokens from Cotter here:
🎉 You're done!
Add Email/Phone Verification
You can also verify your user's email or phone number during the sign up process.
Getting the Logged-in User
Cotter's SDK automatically saves the logged-in user in your device's secure storage. Check out how to get the user information:
Getting OAuth Tokens
Cotter also automatically generates an
access_token, id_token , and refresh_token that is securely stored in the device's secure storage. Check how to get these tokens:Last modified 1yr ago