Add lifecycle dependency in build.gradle

build.gradle

afterEvaluate {
    def containsEmbeddingDependencies = false
    for (def configuration : configurations.all) {
        for (def dependency : configuration.dependencies) {
            if (dependency.group == 'io.flutter' &&
                dependency.name.startsWith('flutter_embedding') &&
                dependency.isTransitive())
            {
                containsEmbeddingDependencies = true
                break
            }
        }
    }
    if (!containsEmbeddingDependencies) {
        android {
            dependencies {
                // add lifecycle dependencies
            }
        }
    }
}

// add lifecycle dependencies

Should be:

     def lifecycle_version = "2.1.0"
     api "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
     api "androidx.lifecycle:lifecycle-runtime:$lifecycle_version"