update gradle files

android/app/build.gradle

@@ -1,3 +1,9 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
 def localProperties = new Properties()
 def localPropertiesFile = rootProject.file('local.properties')
 if (localPropertiesFile.exists()) {
@@ -6,11 +12,6 @@ if (localPropertiesFile.exists()) {
     }
 }
 
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
 def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
 if (flutterVersionCode == null) {
     flutterVersionCode = '1'
@@ -21,9 +22,6 @@ if (flutterVersionName == null) {
     flutterVersionName = '1.0'
 }
 
-apply plugin: 'com.android.application'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
 def keystoreProperties = new Properties()
 def keystorePropertiesFile = rootProject.file('key.properties')
 if (keystorePropertiesFile.exists()) {

android/build.gradle

@@ -1,17 +1,3 @@
-buildscript {
-    ext.kotlin_version = '1.8.21'
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.3.0'
-        classpath 'com.google.gms:google-services:4.3.8'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
 allprojects {
     repositories {
         google()

android/settings.gradle

@@ -1,15 +1,25 @@
-include ':app'
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
 
-def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
 
-def plugins = new Properties()
+    repositories {
-def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
+        google()
-if (pluginsFile.exists()) {
+        mavenCentral()
-    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
+        gradlePluginPortal()
+    }
 }
 
-plugins.each { name, path ->
+plugins {
-    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    include ":$name"
+    id "com.android.application" version "7.3.0" apply false
-    project(":$name").projectDir = pluginDirectory
+    id "org.jetbrains.kotlin.android" version "1.8.21" apply false
 }
+
+include ":app"