android/crane/build.gradle

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

apply plugin: "com.android.dynamic-feature"

android {
    namespace "com.example.gallery.crane"
    compileSdkVersion 31

    sourceSets {
        applicationVariants.all { variant ->
            main.assets.srcDirs += "${project.buildDir}/intermediates/flutter/${variant.name}/deferred_assets"
            main.jniLibs.srcDirs += "${project.buildDir}/intermediates/flutter/${variant.name}/deferred_libs"
        }
    }

    defaultConfig {
        minSdkVersion 21
    }

    compileOptions {
        sourceCompatibility 1.8
        targetCompatibility 1.8
    }
}

dependencies {
    implementation project(":app")
}