integration_test example Android app: migrate to Gradle KTS (#157193)

After this PR is merged, all of `integration_test` Android gradle
buildscripts will be in Kotlin.

Follow-up of https://github.com/flutter/flutter/pull/156291

Part of ongoing effort to use Gradle Kotlin DSL a bit more

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

packages/integration_test/example/android/app/build.gradle

@@ -1,74 +0,0 @@
-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-plugins {
-    id "com.android.application"
-    id "dev.flutter.flutter-gradle-plugin"
-}
-
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
-if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
-}
-
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
-if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
-}
-
-android {
-    namespace 'com.example.integration_test_example'
-    compileSdk flutter.compileSdkVersion
-
-    // Flutter's CI installs the NDK at a non-standard path.
-    // This non-standard structure is initially created by
-    // https://github.com/flutter/engine/blob/3.27.0/tools/android_sdk/create_cipd_packages.sh.
-    String systemNdkPath = System.getenv("ANDROID_NDK_PATH")
-    if (systemNdkPath != null) {
-        ndkVersion = flutter.ndkVersion
-        ndkPath = systemNdkPath
-    }
-
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-
-    defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.example.integration_test_example"
-        minSdkVersion flutter.minSdkVersion
-        targetSdkVersion flutter.targetSdkVersion
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    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
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
-    }
-}
-
-flutter {
-    source '../..'
-}
-
-dependencies {
-    testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test:runner:1.5.2'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
-}

packages/integration_test/example/android/app/build.gradle.kts

@@ -0,0 +1,58 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+plugins {
+    id("com.android.application")
+    id("kotlin-android")
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+android {
+    namespace = "com.example.integration_test_example"
+    compileSdk = flutter.compileSdkVersion
+
+    // Flutter's CI installs the NDK at a non-standard path.
+    // This non-standard structure is initially created by
+    // https://github.com/flutter/engine/blob/3.27.0/tools/android_sdk/create_cipd_packages.sh.
+    val systemNdkPath = System.getenv("ANDROID_NDK_PATH")
+    if (systemNdkPath != null) {
+        ndkVersion = flutter.ndkVersion
+        ndkPath = systemNdkPath
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "com.example.integration_test_example"
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    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.getByName("debug")
+            proguardFiles(getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro")
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}
+
+dependencies {
+    testImplementation("junit:junit:4.13.2")
+    androidTestImplementation("androidx.test:runner:1.5.2")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+}

packages/integration_test/example/android/app/src/debug/AndroidManifest.xml

@@ -2,8 +2,7 @@
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file. -->
 
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    package="com.example.integration_test_example">
     <!-- Flutter needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->

packages/integration_test/example/android/app/src/main/AndroidManifest.xml

@@ -2,8 +2,7 @@
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file. -->
 
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    package="com.example.integration_test_example">
 
     <!-- ${applicationName} is used by the Flutter tool to select the Application
          class to use. For most apps, this is the default Android application.

packages/integration_test/example/android/app/src/profile/AndroidManifest.xml

@@ -2,8 +2,7 @@
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file. -->
 
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    package="com.example.integration_test_example">
     <!-- Flutter needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->

packages/integration_test/example/android/build.gradle.kts

@@ -13,22 +13,22 @@ allprojects {
     }
 }
 
-rootProject.buildDir = '../build'
+rootProject.buildDir = file("../build")
 
 subprojects {
-    project.buildDir = "${rootProject.buildDir}/${project.name}"
+    project.buildDir = file("${rootProject.buildDir}/${project.name}")
 }
 subprojects {
-    project.evaluationDependsOn(':app')
+    project.evaluationDependsOn(":app")
     dependencyLocking {
-        ignoredDependencies.add('io.flutter:*')
+        ignoredDependencies.add("io.flutter:*")
         lockFile = file("${rootProject.projectDir}/project-${project.name}.lockfile")
-        if (!project.hasProperty('local-engine-repo')) {
+        if (!project.hasProperty("local-engine-repo")) {
-          lockAllConfigurations()
+            lockAllConfigurations()
         }
     }
 }
 
-tasks.register("clean", Delete) {
+tasks.register<Delete>("clean") {
-    delete rootProject.buildDir
+    delete(rootProject.buildDir)
 }

packages/integration_test/example/android/buildscript-gradle.lockfile

@@ -129,15 +129,15 @@ org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-klib-commonizer-api:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-native-utils:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-project-model:1.8.10=classpath
-org.jetbrains.kotlin:kotlin-reflect:1.9.20=classpath
+org.jetbrains.kotlin:kotlin-reflect:2.0.21=classpath
 org.jetbrains.kotlin:kotlin-scripting-common:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-scripting-compiler-embeddable:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-scripting-compiler-impl-embeddable:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-scripting-jvm:1.8.10=classpath
-org.jetbrains.kotlin:kotlin-stdlib-common:1.9.20=classpath
+org.jetbrains.kotlin:kotlin-stdlib-common:2.0.21=classpath
 org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.9.20=classpath
 org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.20=classpath
-org.jetbrains.kotlin:kotlin-stdlib:1.9.20=classpath
+org.jetbrains.kotlin:kotlin-stdlib:2.0.21=classpath
 org.jetbrains.kotlin:kotlin-tooling-core:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-util-io:1.8.10=classpath
 org.jetbrains.kotlin:kotlin-util-klib:1.8.10=classpath
@@ -146,7 +146,7 @@ org.jetbrains.kotlinx:kotlinx-serialization-core-jvm:1.4.0=classpath
 org.jetbrains.kotlinx:kotlinx-serialization-core:1.4.0=classpath
 org.jetbrains.kotlinx:kotlinx-serialization-json-jvm:1.4.0=classpath
 org.jetbrains.kotlinx:kotlinx-serialization-json:1.4.0=classpath
-org.jetbrains:annotations:23.0.0=classpath
+org.jetbrains:annotations:13.0=classpath
 org.jvnet.staxex:stax-ex:1.8.1=classpath
 org.ow2.asm:asm-analysis:9.6=classpath
 org.ow2.asm:asm-commons:9.6=classpath

packages/integration_test/example/android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-all.zip

packages/integration_test/example/android/settings.gradle

@@ -1,41 +0,0 @@
-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This file is auto generated.
-// To update all the settings.gradle files in the Flutter repo,
-// See dev/tools/bin/generate_gradle_lockfiles.dart.
-
-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
-    }
-    settings.ext.flutterSdkPath = flutterSdkPath()
-
-    includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")
-
-    repositories {
-        google()
-        mavenCentral()
-        gradlePluginPortal()
-    }
-}
-
-buildscript {
-    dependencyLocking {
-        lockFile = file("${rootProject.projectDir}/buildscript-gradle.lockfile")
-        lockAllConfigurations()
-    }
-}
-
-plugins {
-    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "8.7.0" apply false
-    id "org.jetbrains.kotlin.android" version "1.8.10" apply false
-}
-
-include ":app"

packages/integration_test/example/android/settings.gradle.kts

@@ -0,0 +1,41 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is auto generated.
+// To update all the settings.gradle files in the Flutter repo,
+// See dev/tools/bin/generate_gradle_lockfiles.dart.
+
+pluginManagement {
+    val flutterSdkPath =
+        run {
+            val properties = java.util.Properties()
+            file("local.properties").inputStream().use { properties.load(it) }
+            val flutterSdkPath = properties.getProperty("flutter.sdk")
+            require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
+            flutterSdkPath
+        }
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+buildscript {
+    dependencyLocking {
+        lockFile = file("${rootProject.projectDir}/buildscript-gradle.lockfile")
+        lockAllConfigurations()
+    }
+}
+
+plugins {
+    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
+    id("com.android.application") version "8.7.0" apply false
+    id("org.jetbrains.kotlin.android") version "1.8.10" apply false
+}
+
+include(":app")