chore: update android section of Flutter getting started guide

cspell.json

@@ -532,6 +532,7 @@
     "Didfinishlaunchingwithoptions",
     "displayMode",
     "displayOrder",
+    "dists",
     "DocSet",
     "DocSets",
     "Donef",

src/fragments/lib/datastore/flutter/getting-started/20_installLib.mdx

@@ -20,8 +20,8 @@ compileOptions {
     // add this line to support Java8 features
     coreLibraryDesugaringEnabled true
 
-    sourceCompatibility JavaVersion.VERSION_1_8
-    targetCompatibility JavaVersion.VERSION_1_8
+    sourceCompatibility JavaVersion.VERSION_17
+    targetCompatibility JavaVersion.VERSION_17
 }
 ```
 

src/fragments/lib/project-setup/flutter/platform-setup/android.mdx

@@ -1,48 +1,68 @@
-Amplify requires a minimum of API level 24 (Android 7.0), Gradle 7 and Kotlin > 1.9 when targeting Android.
+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. 
 
-_If your Flutter app was generated with Flutter 3.16 or lower, please follow the migration guide [here](https://docs.flutter.dev/release/breaking-changes/flutter-gradle-plugin-apply)._
+<Callout warning>
+The steps below are intended for Flutter apps created with Flutter version 3.16+. If your app was created prior to version 3.16, please follow the guide [here](https://docs.flutter.dev/release/breaking-changes/flutter-gradle-plugin-apply) to migrate to Gradle's declarative plugins block before following the steps below.
+</Callout>
 
-From your project root, navigate to the `android/` directory and open `settings.gradle` in the text editor of your choice. Update the Gradle plugin version to 7.4.2 or higher:
+1. Open `android/settings.gradle` and update the Android Gradle plugin and kotlin versions:
 
-```diff
-    plugins {
-        id "dev.flutter.flutter-plugin-loader" version "1.0.0"
--       id "com.android.application" version "7.3.0" apply false
-+       id "com.android.application" version "7.4.2" apply false
-        id "org.jetbrains.kotlin.android" version "1.9.10" apply false
-    }
-```
-
-Go to the `android/` directory and open `settings.gradle`. Update the Kotlin plugin version to 1.9.10 or higher:
-
-```diff
-    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 "org.jetbrains.kotlin.android" version "1.9.10" apply false
-    }
+```diff title="android/settings.gradle"
+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
+}
 ```
 
-Then, open `android/gradle/wrapper/gradle-wrapper.properties`. Update the Gradle `distributionUrl` to a version between 7.3 and 7.6.1 (see the [Flutter docs](https://docs.flutter.dev/release/breaking-changes/android-java-gradle-migration-guide) for more info).
+2. Open `android/gradle/wrapper/gradle-wrapper.properties` and update the Gradle `distributionUrl`.
 
-```diff
+```diff title="android/gradle/wrapper/gradle-wrapper.properties"
+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-7.6.1-all.zip
++distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-all.zip
 ```
 
-Then, open `android/app/build.gradle`. Update the minimum Android SDK version to 24 or higher:
+3. Open `android/app/build.gradle` and update the Java version and minimum Android SDK version.
+
+```diff title="android/app/build.gradle"
+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
+    }
 
-```diff
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.myapp"
+        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.
--       minSdkVersion flutter.minSdkVersion
-+       minSdkVersion 24
-        targetSdkVersion flutter.targetSdkVersion
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
+-       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
+        }
+    }
+}
 ```
+
+<Callout info>
+If you would like to use a higher version of Gradle or Android Gradle plugin see the compatibility matrix [here](https://developer.android.com/build/releases/gradle-plugin#updating-gradle).
+</Callout>