Set up fullstack project

Amplify Flutter supports API level 24+ (Android 7.0+), and requires Gradle 8+, Kotlin 1.9+, and Java 17+ when targeting Android. Follow the steps below to apply these changes in your app.

1. Open android/settings.gradle and update the Android Gradle plugin and kotlin versions:

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-   id "com.android.application" version "7.3.0" apply false
-   id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+   id "com.android.application" version "8.1.0" apply false
+   id "org.jetbrains.kotlin.android" version "1.9.10" apply false
}

2. Open android/gradle/wrapper/gradle-wrapper.properties and update the Gradle distributionUrl.

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-all.zip

3. Open android/app/build.gradle and update the Java version and minimum Android SDK version.

android {
    namespace = "com.example.myapp"
    compileSdk = flutter.compileSdkVersion
    ndkVersion = flutter.ndkVersion
    compileOptions {
-       sourceCompatibility = JavaVersion.VERSION_1_8
-       targetCompatibility = JavaVersion.VERSION_1_8
+       sourceCompatibility = JavaVersion.VERSION_17
+       targetCompatibility = JavaVersion.VERSION_17
    }
    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId = "com.example.myapp"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
-       minSdk = flutter.minSdkVersion
+       minSdk = 24
        targetSdk = flutter.targetSdkVersion
        versionCode = flutterVersionCode.toInteger()
        versionName = flutterVersionName
    }
    
    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig = signingConfigs.debug
        }
    }
}

Network Permissions for Release Builds

Flutter apps have access to make network requests by default in debug mode. This permission needs to be added when building in release mode. To do this, open android/app/src/main/AndroidManifest.xml and make the following addition.

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
Copy highlighted code example
   <uses-permission android:name="android.permission.INTERNET"/>
...
</manifest>

There are no Amplify specific requirements or setup instructions when targeting web. You will need to use a browser supported by Flutter. See the following Flutter docs for more info:

• Supported deployment platforms
• FAQ: Which web browsers are supported by Flutter?

Amplify requires a minimum deployment target of 10.15 and Xcode 15.0 or higher when targeting macOS. Additionally, you will need to enable networking, keychain entitlements, and code signing.

Update Minimum Version

From your project root, navigate to the macos/ directory and open the Podfile in a text editor of your choice. Update the target macOS platform to 10.15 or higher.

platform :osx, '10.15'

Open your project in Xcode and select Runner, Targets -> Runner and then the "General" tab. Under the "Minimum Deployments" section, update the macOS version to 10.15 or higher.

Select Runner, Project -> Runner and then the "Info" tab. Update "macOS Deployment Target" to 10.15 or higher.

Enable Network Calls

Open your project in Xcode and select Runner, Targets -> Runner and then the "Signing and Capabilities" tab. Under "App Sandbox" select "Outgoing Connections (Client)".

For more info on the Networking entitlement, see Apple's documentation on com.apple.security.network.client.

Enable Keychain Sharing

Open your project in Xcode and select Runner, Targets -> Runner and then the "Signing and Capabilities" tab.

1. Click the "+ icon".

2. Search for "Keychain Sharing" in the subsequent modal, and add it.

3. Scroll down to "Keychain Sharing" in the "Signing and Capabilities" and click the "+" icon. By default, your bundle ID will be used.

4. Finally, add a development team and enable signing.

There are no Amplify specific requirements or setup instructions when targeting Windows. You will need to use a Windows version supported by Flutter. See the following Flutter docs for more info:

• Supported deployment platforms

Amplify Flutter depends on the libsecret library when targeting Linux.

Local Development

To run and debug an app that depends on Amplify Flutter, you must install libsecret-1-dev.

To install on Ubuntu, run:

sudo apt-get update
sudo apt-get install -y libsecret-1-dev

This will install libsecret-1-dev and any dependencies of libsecret-1-dev, such as libglib2.0-dev, which are also required to run and debug apps that depend on Amplify Flutter.

Packaging Your App

To include the required dependencies when packaging your app with Snapcraft, include them in your snapcraft.yaml file. For more info, see Flutter's documentation on releasing to the Snap Store.

parts:
  my-app:
    plugin: flutter
    source: .
    flutter-target: lib/main.dart
    build-packages:
      - libsecret-1-dev
    stage-packages:
      - libsecret-1-0