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Android - Fast way to setup Retrolambda on an android project.
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  Setup and example how to use:

Setup Steps:

  • Download and install jdk8.
  • Add the following to your project’s main build.gradle 
    buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'me.tatarka:gradle-retrolambda:3.2.3'
    }
}
  • Now add this to your application module’s build.gradle 
    apply plugin: 'com.android.application' // or apply plugin: 'java'
apply plugin: 'me.tatarka.retrolambda'
  • Add these lines to your application module’s build.gradle to inform the IDE of the language level: 
    android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

    • Example:

    So things like this:

    button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        log("Clicked");
    }
});

    Become this:

    button.setOnClickListener(v -> log("Clicked"));



    Read Article
    https://develop.horje.com/learn/1434/reference

     

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