add sample

app/build.gradle

@@ -1,6 +1,7 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
+apply from: '../ktlint.gradle'
 
 android {
     compileSdkVersion versions.compileSdk

app/src/main/java/ru/nobird/android/ktlint/MainActivity.kt

@@ -9,4 +9,6 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
     }
+
+    fun explicitPublicTypeViolation() = "explicit public type violation"
 }

build.gradle

@@ -24,6 +24,7 @@ allprojects {
         google()
         jcenter()
         maven { url "https://jitpack.io" }
+        maven { url "https://dl.bintray.com/eadm/ru.nobird.android" }
     }
 }
 

dependencies.gradle

@@ -19,6 +19,7 @@ ext.versions = [
         junit                : '4.12',
 
         ktlint               : '0.34.2',
+        ktlintRules          : '1.0'
 ]
 
 ext.gradlePlugins = [
@@ -38,5 +39,6 @@ ext.libraries = [
 
         junit                : "junit:junit:$versions.junit",
 
-        ktlint               : "com.pinterest:ktlint:$versions.ktlint"
+        ktlint               : "com.pinterest:ktlint:$versions.ktlint",
+        ktlintRules          : "ru.nobird.android.ktlint:rules:$versions.ktlintRules"
 ]

ktlint.gradle

@@ -0,0 +1,33 @@
+repositories {
+    jcenter()
+}
+
+configurations {
+    ktlint
+}
+
+dependencies {
+    ktlint libraries.ktlint
+    ktlint libraries.ktlintRules
+    // additional 3rd party ruleset(s) can be specified here
+    // just add them to the classpath (ktlint 'groupId:artifactId:version') and
+    // ktlint will pick them up
+}
+
+task ktlint(type: JavaExec, group: "verification") {
+    description = "Check Kotlin code style."
+    main = "com.pinterest.ktlint.Main"
+    classpath = configurations.ktlint
+    args = ["--disabled_rules=no-multi-spaces,package-name,final-newline,import-ordering", "src/main/java/**/*.kt"]
+}
+check.dependsOn ktlint
+
+task ktlintFormat(type: JavaExec, group: "verification") {
+    description = "Format Kotlin code style."
+    main = "com.pinterest.ktlint.Main"
+    classpath = configurations.ktlint
+    args = ["-F", "--disabled_rules=no-multi-spaces,package-name,final-newline,import-ordering", "src/main/java/**/*.kt"]
+    // to generate report in checkstyle format prepend following args:
+    // "--reporter=plain", "--reporter=checkstyle,output=${buildDir}/ktlint.xml"
+    // see https://github.com/shyiko/ktlint#usage for more
+}