Java 8 desugaring

build.gradle

<!-- Copyright 2019 Google LLC.
SPDX-License-Identifier: Apache-2.0 -->

android {
  defaultConfig {
    //Only required when setting minSdkVersion to 20 or lower
    multiDexEnabled true
  }

  compileOptions {
    // Flag to enable support for the new language APIs
    coreLibraryDesugaringEnabled true
    // Sets Java compatibility to Java 8
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
  }
}

dependencies {
  // Dependency with the implementation code for the APIs
  coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.0.5'
}