GETTING STARTED

Getting Started

Add your Flutter Platform

To init your SDK and start interacting with Appwrite services, you need to add a new Flutter platform to your project. To add a new platform, go to your Appwrite console, choose the project you created in the step before, and click the 'Add Platform' button.

From the options, choose to add a new Flutter platform and add your app credentials. Appwrite Flutter SDK currently supports building apps for Android, iOS, Linux, Mac OS, Web and Windows.

If you are building your Flutter application for multiple devices, you have to follow this process for each different device.

Android

For Android first add your app <u>name</u> and <u>package name</u>, Your package name is generally the applicationId in your app-level <a href="https://github.com/appwrite/playground-for-flutter/blob/0fdbdff98384fff940ed0b1e08cf14cfe3a2be3e/android/app/build.gradle#L41" target="_blank" rel="noopener">build.gradle</a> file. By registering your new app platform, you are allowing your app to communicate with the Appwrite API.

In order to capture the Appwrite OAuth callback url, the following activity needs to be added inside the <application> tag, along side the existing <activity> tags in your AndroidManifest.xml. Be sure to replace the [PROJECT_ID] string with your actual Appwrite project ID. You can find your Appwrite project ID in your project settings screen in the console.

<manifest ...>
    ....
    <application ...>
        ....
        <!-- Add this inside the <application> tag, alongside the existing <activity> tags -->
        <activity android:exported="true" android:name="com.linusu.flutter_web_auth_2.CallbackActivity" >
            <intent-filter android:label="flutter_web_auth_2">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="appwrite-callback-[PROJECT_ID]" />
            </intent-filter>
        </activity>
    </application>
</manifest>

iOS

For iOS first add your app name and Bundle ID, You can find your Bundle Identifier in the General tab for your app's primary target in Xcode.

The Appwrite SDK uses ASWebAuthenticationSession on iOS 12+ and SFAuthenticationSession on iOS 11 to allow OAuth authentication. You have to change your iOS Deployment Target in Xcode to be iOS >= 11 to be able to build your app on an emulator or a real device.

1. In Xcode, open Runner.xcworkspace in your app's ios folder.
2. To view your app's settings, select the Runner project in the Xcode project navigator. Then, in the main view sidebar, select the Runner target.
3. Select the General tab.
4. In Deployment Info, 'Target' select iOS 11.0

Linux

For Linux add your app <u>name</u> and <u>package name</u>, Your package name is generally the name in your <a href="https://github.com/appwrite/playground-for-flutter/blob/0fdbdff98384fff940ed0b1e08cf14cfe3a2be3e/pubspec.yaml#L1" target="_blank" rel="noopener">pubspec.yaml<a> file. If you cannot find the correct package name, run the application in linux, and make any request with proper exception handling, you should get the application ID needed to add in the received error message.

macOS

For macOS add your app name and Bundle ID, You can find your Bundle Identifier in the General tab for your app's primary target in Xcode.

The Appwrite SDK uses ASWebAuthenticationSession on macOS 10.15+ to allow OAuth authentication. You have to change your macOS Deployment Target in Xcode to be macOS >= 10.15 to be able to build your app for macOS.

Web

Appwrite 0.7, and the Appwrite Flutter SDK 0.3.0 have added support for Flutter Web. To build web apps that integrate with Appwrite successfully, all you have to do is add a web platform on your Appwrite project's dashboard and list the domain your website will use to allow communication to the Appwrite API.

For web in order to capture the OAuth2 callback URL and send it to the application using JavaScript postMessage(), you need to create an html file inside ./web folder of your Flutter project. For example auth.html with the following content.

<!DOCTYPE html>
<title>Authentication complete</title>
<p>Authentication is complete. If this does not happen automatically, please close the window.</p>
<script>
  function postAuthenticationMessage() {
    const message = {
      'flutter-web-auth-2': window.location.href
    };

    if (window.opener) {
      window.opener.postMessage(message, window.location.origin);
      window.close();
    } else if (window.parent && window.parent !== window) {
      window.parent.postMessage(message, window.location.origin);
    } else {
      localStorage.setItem('flutter-web-auth-2', window.location.href);
      window.close();
    }
  }

  postAuthenticationMessage();
</script>

Redirection URL passed to the authentication service must be the same as the URL on which the application is running (schema, host, port if necessary) and the path must point to created HTML file, /auth.html in this case. The callbackUrlScheme parameter of the authenticate() method does not take into account, so it is possible to use a schema for native platforms in the code.

Flutter Web Cross-Domain Communication & Cookies

While running Flutter Web, make sure your Appwrite server and your Flutter client are using the same top-level domain and the same protocol (HTTP or HTTPS) to communicate. When trying to communicate between different domains or protocols, you may receive HTTP status error 401 because some modern browsers block cross-site or insecure cookies for enhanced privacy. In production, Appwrite allows you set multiple custom-domains for each project.

Windows

For Windows add your app <u>name</u> and <u>package name</u>, Your package name is generally the name in your <a href="https://github.com/appwrite/playground-for-flutter/blob/0fdbdff98384fff940ed0b1e08cf14cfe3a2be3e/pubspec.yaml#L1" target="_blank" rel="noopener">pubspec.yaml</a> file. If you cannot find the correct package name, run the application in windows, and make any request with proper exception handling, you should get the application id needed to add in the received error message.

Init your SDK

Client client = Client().setProject('<YOUR_PROJECT_ID>');

If using a self-hosted instance, you will also need to set your Appwrite endpoint using the setEndpoint method. Before starting to send any API calls to your new Appwrite instance, make sure your Android or iOS emulators has network access to the Appwrite server hostname or IP address. When trying to connect to a local Appwrite instance from an emulator or a mobile device, localhost is the hostname for the device or emulator and not your machine. You should replace localhost with your machine's private IP as the Appwrite endpoint's hostname (e.g. 192.168.1.100). You can also use a service like ngrok to proxy the Appwrite API.

Make Your First Request

Account account = Account(client);

User user = await account.create(
  userId: ID.unique(),
  email: '[email protected]',
  password: 'password',
  name: 'Walter O'Brien',
);

Full Example

Client client = Client().setProject('<YOUR_PROJECT_ID>>');

Account account = Account(client);

User user = await account.create(
  userId: ID.unique(),
  email: '[email protected]',
  password: 'password',
  name: 'Walter O'Brien'
);

Error Handling

The Appwrite Flutter SDK raises AppwriteException object with message, type, code and response properties. You can handle any errors by catching AppwriteException and present the message to the user or handle it yourself based on the provided error information. Below is an example.

try {
  User user = await account.create(...);
} on AppwriteException catch(e) {
  // Handle the exception
}

Learn more

You can use the following resources to learn more and get help

• 🚀 Getting Started Tutorial
• 📜 Appwrite Docs
• 💬 Discord Community
• 🚂 Appwrite Flutter Playground