Flutter | The Android Gradle plugin supports only Kotlin Gradle plugin version 1.3.0 and higher

Issue

I am trying to add firebase dependencies. When I run flutter run I get

The Android Gradle plugin supports only Kotlin Gradle plugin version 1.3.0 and higher.
The following dependencies do not satisfy the required version:
project ':google_api_availability' -> org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71

Pubscec.yaml

dependencies:
  flutter:
    sdk: flutter
  firebase_auth: ^0.8.1
  google_sign_in: ^4.0.1
  cloud_firestore: ^0.9.0+1
  firebase_core: ^0.3.0+1
  firebase_storage: ^2.0.1
  cupertino_icons: ^0.1.2
  font_awesome_flutter: ^8.0.1
  country_code_picker: ^1.1.0
  fluttertoast: ^2.0.7
  image_picker: ^0.4.6
  shared_preferences: ^0.4.2
  cached_network_image: ^0.4.1
  intl: ^0.15.7
  geolocator: ^2.1.1
  http: ^0.11.3+14
  flutter_google_places: ^0.1.4+1
  location: ^1.1.6
  uuid: ^1.0.3
  auto_size_text: 0.3.0

build.gradle

buildscript {
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'
        classpath 'com.google.gms:google-services:4.2.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

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

task clean(type: Delete) {
    delete rootProject.buildDir
}

app/build.gradle

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

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.")
}

apply plugin: 'com.android.application'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 28

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.myapp"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.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
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'  // Gradle plugin

Solution

You can find which package depends on google_api_availability by running flutter packages pub deps on the root of the project - this will list all the direct and transitive dependencies of your project in a tree view.

I couldn't find a way to display the plugin dependencies of a package - I guess you'll only find out once you try to build it.

The problem is you are using version 3.3.1 of the Android Gradle plugin, which enforces Kotlin 1.3.0 or above. At the same time, the geolocator package depends on google_api_availability, which seems to be using Kotlin 1.2.71. At the moment there is no version of google_api_availability that uses Kotlin 1.3.0 or above, so you only have 1 solution - downgrade the Android Gradle plugin to version 3.2.1.

Answered By - Ovidiu