KTLint integration

build.gradle

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
apply plugin: 'io.fabric'

apply from: '../gradle/afsTasks.gradle'   <========

android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'

    defaultConfig {
        applicationId 'my.package.name'
        minSdkVersion 24
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        
    }
...
}

ktlint.gradle

// Github repo: https://github.com/pinterest/ktlint

repositories {
    jcenter()
}

configurations {
    ktlint
}

dependencies {
    ktlint "com.pinterest:ktlint:0.35.0"
    // additional 3rd party ruleset(s) can be specified here
    // just add them to the classpath (e.g. ktlint 'groupId:artifactId:version') and
    // ktlint will pick them up
}

task ktlint(type: JavaExec, group: "verification") {
    description = "Check Kotlin code style."
    classpath = configurations.ktlint
    main = "com.pinterest.ktlint.Main"
    args "src/**/*.kt"
    // to generate report in checkstyle format prepend following args:
    // "--reporter=plain", "--reporter=checkstyle,output=${buildDir}/ktlint.xml"
    // see https://github.com/pinterest/ktlint#usage for more
}

task ktlintFormat(type: JavaExec, group: "formatting") {
    description = "Fix Kotlin code style deviations."
    classpath = configurations.ktlint
    main = "com.pinterest.ktlint.Main"
    args "-F", "src/**/*.kt"
}

pre-commit

#!/bin/sh
set -e
# Read more info at: https://medium.com/@alistair.cerio/android-ktlint-and-pre-commit-git-hook-5dd606e230a9

echo "***************************"
echo "Running git pre-commit hook"
echo "***************************"

# Run afs_ktlint to make sure there is no lint issue
./gradlew afs_ktlint

RESULT=$?

# return 1 exit code if running checks fails
[[ ${RESULT} -ne 0 ]] && exit 1
  exit 0

exit 0

tasks.gradle

apply from: '../gradle/ktlint.gradle'

task installGitHook(type: Copy) {
    from file("$rootProject.rootDir/scripts/pre-commit")
    into file("$rootProject.rootDir/.git/hooks")
    fileMode 0777
}

if (!System.getenv('CI')) {
    println("This is not CI.....")
    apply from: "$rootProject.rootDir/gradle/ktlint.gradle"

    tasks.getByPath(':app:preBuild').dependsOn installGitHook
    tasks.getByPath(':app:preBuild').dependsOn ktlintFormat
}

check.dependsOn ktlint