Using lambda expressions in Android projects

configForUsingLambdaExpressionInAndroidDev

To use lambda expressions, you just have to enable the jack toolchain in build.gradle of your module.
Open build.gradle for you app, and configure it as follows:

android {
  ...
  defaultConfig {
    ...
    jackOptions {
      enabled true
    }
  }
  compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
  }
}


### Note:
Jack toolchain can be used if buildToolsVersion is greater than 21.
Also a newer version of gradle is required.