I am writing a flutter app that targets both iOS and Android, and uses firebase-auth and firebase-storage. The app is compiling and working well in the iOS simulator.
On Android, however, I have having a build issue. The following build.gradle compiles successfully, but doesn’t work. (When I actually attempt to Sign in with Google, it shows an “Unknown Error Occurred. This is not wholly unexpected – I haven’t finished adding dependencies, as you’ll see below.)
buildscript {
ext.kotlin_version = '1.9.23'
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:8.3.2'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
plugins {
id "com.android.application"
id 'com.google.gms.google-services'
id "kotlin-android"
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.myapp"
compileSdk 34
ndkVersion '25.1.8937393'
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
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.
minSdkVersion 21
targetSdkVersion 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
}
}
buildToolsVersion '34.0.0'
}
flutter {
source '../..'
}
dependencies {
implementation platform('com.google.firebase:firebase-bom:32.8.1')
implementation('com.google.firebase:firebase-storage')
}
Following the Firebase instructions, I add implementation('com.google.firebase:firebase-auth')
to the dependencies. However, I get the following error:
➜ putali git:(main) ✗ flutter run -d emulator-5554
Launching lib/main.dart on sdk gphone64 arm64 in debug mode...
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.common_common_ktx.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.common_logger.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise.android_impl.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise.internal.release.com.google.android.recaptcha.internal_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise.internal_impl.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise.internal_internal.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise.native_impl.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise.public_public.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.enterprise_enterprise.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.metricscollection_metricscollection.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/java.com.google.android.libraries.abuse.recaptcha.network_network.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/recaptcha.proto.mobile_allowlist_kt_proto_lite.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/recaptcha.proto.mobile_enterprise_sdk_kt_proto_lite.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/recaptcha.proto.mobile_mobile_reload_kt_proto_lite.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/recaptcha.proto.mobile_webview_sdk_kt_proto_lite.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/third_party.java_src.protobuf.current.java.com.google.protobuf.kotlin_only_for_use_in_proto_generated_code_its_generator_and_tests.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/c0ec700e9714ce9064eef1af0d40a60e/transformed/jetified-recaptcha-18.4.0-api.jar!/META-INF/third_party.java_src.protobuf.current.java.com.google.protobuf.kotlin_shared_runtime.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
e: /Users/pp-personal/.gradle/caches/transforms-3/fd337f4d568e2ea40aa721a5d11e021a/transformed/jetified-firebase-auth-22.3.1-api.jar!/META-INF/java.com.google.android.gmscore.integ.client.firebase-auth-api_firebase-auth-api.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1.
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:compileDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.GradleCompilerRunnerWithWorkers$GradleKotlinCompilerWorkAction
> Compilation error. See log for more details
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
BUILD FAILED in 13s
Running Gradle task 'assembleDebug'... 13.7s
┌─ Flutter Fix ─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ [!] Your project requires a newer version of the Kotlin Gradle plugin. │
│ Find the latest version on https://kotlinlang.org/docs/releases.html#release-details, then update /Users/pp/myapp/android/build.gradle: │
│ ext.kotlin_version = '<latest-version>' │
└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
Error: Gradle task assembleDebug failed with exit code 1
Advice on similar issues seems to be to upgrade to the latest version of Kotlin, which I am already on.
I am also using the latest Gradle; per gradle-wrapper.properties:
distributionUrl=https://services.gradle.org/distributions/gradle-8.7-all.zip
Help!