examples/flutter_gallery/android/app/build.gradle

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withInputStream { stream ->
        localProperties.load(stream)
    }
}

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 flutterVersion = file("$flutterRoot/version").text
def flutterVersionComponents = flutterVersion.split(/[^0-9]+/)
// Let the integer version code of xx.yy.zz-pre.nnn be xxyyzznnn.
int flutterVersionCode = Math.min(flutterVersionComponents[0].toInteger(), 20) * 100000000
flutterVersionCode += Math.min(flutterVersionComponents[1].toInteger(), 99) * 1000000
flutterVersionCode += Math.min(flutterVersionComponents[2].toInteger(), 999) * 1000
if (flutterVersionComponents.length > 3) {
    flutterVersionCode += Math.min(flutterVersionComponents[3].toInteger(), 999)
}

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

android {
    compileSdkVersion 27

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        applicationId "io.flutter.demo.gallery"
        minSdkVersion 16
        targetSdkVersion 27
        // The Gallery app's version is defined by the Flutter framework's version.
        versionCode flutterVersionCode
        versionName "$flutterVersion"
        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
        }
    }

    aaptOptions {
        // TODO(goderbauer): remove when https://github.com/flutter/flutter/issues/8986 is resolved.
        if(System.getenv("FLUTTER_CI_WIN")) {
            println "AAPT cruncher disabled when running on Win CI."
            cruncherEnabled false
        }
    }
}

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'
}