Support Android SDK 34

[AndreaBalde]

Description:
When I try to build the Android App Bundle using the latest Android SDK version, the build fails with an error referencing the older Android SDK version.

To Reproduce
Steps to reproduce the behavior:

1. Using Flutter 3.35.4
2. Build App Bundle

Expected behavior
Build app bundle successfully

Additional context
I've got this following error:

Dependency 'androidx.fragment:fragment:1.7.1' requires libraries and applications that depend on it to compile against version 34 or later of the Android APIs.
:reactive_ble_mobile is currently compiled against android-33.
Recommended action: Update this project to use a newer compileSdk of at least 34, for example 36.

Note that updating a library or application's compileSdk (which allows newer APIs to be used) can be done separately from updating targetSdk (which opts the app in to new runtime behavior) and minSdk (which determines which devices the app can be installed on).

[riccardocescon]

@ened @remonh87 any update please?

[BenelliFurtado]

I can successfully build my app with Flutter 3.35.7 against Android compileSdkVersion 36 and targetSdkVersion 36 ... 🤔

[riccardocescon]

I can successfully build my app with Flutter 3.35.7 against Android compileSdkVersion 36 and targetSdkVersion 36 ... 🤔

Are you able to flutter build appbundle ?
I am able to build in debug with my mobile, but when i have to build the appbundle i get:
FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':reactive_ble_mobile:checkReleaseAarMetadata'.

A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
14 issues were found when checking AAR metadata:

   1.  Dependency 'androidx.fragment:fragment:1.7.1' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   2.  Dependency 'androidx.window:window:1.2.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   3.  Dependency 'androidx.window:window-java:1.2.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   4.  Dependency 'androidx.activity:activity:1.8.1' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   5.  Dependency 'androidx.lifecycle:lifecycle-livedata-core-ktx:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   6.  Dependency 'androidx.lifecycle:lifecycle-livedata:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   7.  Dependency 'androidx.lifecycle:lifecycle-viewmodel:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   8.  Dependency 'androidx.lifecycle:lifecycle-livedata-core:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

   9.  Dependency 'androidx.lifecycle:lifecycle-viewmodel-savedstate:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

  10.  Dependency 'androidx.core:core-ktx:1.13.1' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

  11.  Dependency 'androidx.core:core:1.13.1' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

  12.  Dependency 'androidx.lifecycle:lifecycle-runtime:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

  13.  Dependency 'androidx.lifecycle:lifecycle-process:2.7.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

  14.  Dependency 'androidx.annotation:annotation-experimental:1.4.0' requires libraries and applications that
       depend on it to compile against version 34 or later of the
       Android APIs.

       :reactive_ble_mobile is currently compiled against android-33.

       Recommended action: Update this project to use a newer compileSdk
       of at least 34, for example 36.

       Note that updating a library or application's compileSdk (which
       allows newer APIs to be used) can be done separately from updating
       targetSdk (which opts the app in to new runtime behavior) and
       minSdk (which determines which devices the app can be installed
       on).

[BenelliFurtado]

Yes, I can, my app made its way to GooglePlay last week. I'm no expert on Gradle builds, though. Maybe some of this may help you...?

//app/build.gradle
plugins {
    id "com.android.application"
    id "kotlin-android"
    id "dev.flutter.flutter-gradle-plugin"
    id 'com.google.gms.google-services'
    id 'com.google.firebase.crashlytics'
}

def currentJvm = org.gradle.internal.jvm.Jvm.current()
println "Current Java Version:" + currentJvm

ext.kotlin_version = '2.2.0'

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'
}

def keystorePropertiesFile = rootProject.file("keystore_file.properties")
def keystoreProperties = new Properties()
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))

android {

    namespace 'com.my.app'
    compileSdkVersion 36

    // only for bluetooth_enable_fork => remove some time
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_21
        targetCompatibility JavaVersion.VERSION_21        }

    kotlinOptions {
        jvmTarget = '21'
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        applicationId "com.my.app"
        minSdkVersion 29
        targetSdkVersion 36
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName + ""
        multiDexEnabled true
    }

    signingConfigs {
        release {...}
    }

    buildTypes {
        release {
            signingConfig signingConfigs.release
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile(
                   'proguard-android-optimize.txt'),
                   'proguard-rules.pro'
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "com.polidea.rxandroidble2:rxandroidble:1.16.0"
    api 'io.reactivex.rxjava2:rxjava:2.2.17'
}

// build.gradle
allprojects {
    repositories {
        google()
        mavenCentral()
    }

    //    error: Namespace not specified. Please specify a namespace in the module's build.gradle file like so:
    //    https://stackoverflow.com/a/77738936/12000638
    subprojects {
        afterEvaluate { project ->
            if (project.hasProperty('android')) {
                project.android {
                    if (namespace == null) {
                        namespace project.group
                    }
                }
            }
        }
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

tasks.register("clean", Delete) {
    delete rootProject.buildDir
}

// settings.gradle

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
    }()

    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")

    repositories {
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
    // AGP Version (AndroidGradlePlugin)
    // All versions -> https://mvnrepository.com/artifact/com.android.application/com.android.application.gradle.plugin
    id "com.android.application" version "8.12.1" apply false
    // Kotlin Version (formerly ext.kotlin_version)
    // All versions -> https://kotlinlang.org/docs/releases.html#release-details
    id "org.jetbrains.kotlin.android" version "2.2.0" apply false
    id "com.google.gms.google-services" version "4.4.2" apply false
    id "com.google.firebase.crashlytics" version "2.9.9" apply false
}

include ":app"

# gradle.properties
android.enableJetifier=true
android.useAndroidX=true
org.gradle.jvmargs=-Xmx4G -XX:MaxMetaspaceSize=512m -XX:+UseG1GC -Dkotlin.daemon.jvm.options\="-Xmx4G"
org.gradle.java.home=/opt/homebrew/opt/openjdk@21

# gradle-wrapper.properties
#Tue Sep 23 08:03:34 CEST 2025
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-all.zip

[ecolab-neil]

is this still valid?

[ozzy1873]

You can try adding this workaround to android/build.gradle:

subprojects {
    afterEvaluate { project ->
        if (project.hasProperty("android")) {
            project.android {
                compileSdkVersion 36
            }
        }
    }
}