Migrated Gradle build scripts from Groovy to Kotlin + Gradle update to 5.3.1

Author: Piotr Zawadzki

app/build.gradle

@@ -0,0 +1,37 @@
+plugins {
+    id("com.android.application")
+    kotlin("android")
+    kotlin("android.extensions")
+    id("androidx.navigation.safeargs.kotlin")
+}
+
+android {
+    compileSdkVersion(Versions.androidCompileSdkVersion)
+    defaultConfig {
+        applicationId = "com.github.zawadz88.navigationcomponentplayground"
+        minSdkVersion(Versions.androidMinSdkVersion)
+        targetSdkVersion(Versions.androidTargetSdkVersion)
+        versionCode = 1
+        versionName = "1.0"
+    }
+    buildTypes {
+        getByName("release") {
+            isMinifyEnabled = false
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+        }
+    }
+}
+
+dependencies {
+    implementation(Dependencies.Kotlin.stdlib)
+    implementation(Dependencies.AndroidX.coreKtx)
+    implementation(Dependencies.AndroidX.appcompat)
+    implementation(Dependencies.AndroidX.constraintlayout)
+    implementation(Dependencies.AndroidX.legacySupport)
+    implementation(Dependencies.Google.material)
+    implementation(Dependencies.AndroidArchitecture.navigation)
+    implementation(Dependencies.AndroidArchitecture.navigationKtx)
+    implementation(Dependencies.AndroidArchitecture.navigationUi)
+    implementation(Dependencies.AndroidArchitecture.navigationUiKtx)
+    implementation(Dependencies.Util.timber)
+}

app/build.gradle.kts

@@ -0,0 +1,25 @@
+buildscript {
+    repositories {
+        google()
+        jcenter()
+
+    }
+    dependencies {
+        classpath(GradlePlugins.android)
+        classpath(GradlePlugins.kotlin)
+        classpath(GradlePlugins.safeArgs)
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+tasks {
+    val clean by registering(Delete::class) {
+        delete(rootProject.buildDir)
+    }
+}

build.gradle

@@ -0,0 +1 @@
+/build

build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    jcenter()
+}

buildSrc/.gitignore

@@ -0,0 +1,62 @@
+object Versions {
+    // Kotlin
+    const val kotlinVersion = "1.3.21" // please also update in versions.gradle
+
+    // Build info
+    const val androidMinSdkVersion = 21
+    const val androidTargetSdkVersion = 28
+    const val androidCompileSdkVersion = 28
+    const val androidBuildToolsVersion = "28.0.3"
+
+    // Plugins
+    const val androidGradlePlugin = "3.3.2"
+    const val safeArgs = "2.0.0"
+
+    // AndroidX
+    const val appcompat = "1.0.2"
+    const val coreKtx = "1.0.1"
+    const val constraintlayout = "1.1.3"
+    const val legacySupport = "1.0.0"
+    const val navigation = "1.0.0"
+
+    // Google
+    const val material = "1.1.0-alpha04"
+
+    // Utilities
+    const val timber = "4.7.1"
+}
+
+object GradlePlugins {
+    val android = "com.android.tools.build:gradle:${Versions.androidGradlePlugin}"
+    val kotlin = "org.jetbrains.kotlin:kotlin-gradle-plugin:${Versions.kotlinVersion}"
+    val safeArgs = "androidx.navigation:navigation-safe-args-gradle-plugin:${Versions.safeArgs}"
+}
+
+object Dependencies {
+
+    object Kotlin {
+        const val stdlib = "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${Versions.kotlinVersion}"
+    }
+
+    object AndroidX {
+        const val appcompat = "androidx.appcompat:appcompat:${Versions.appcompat}"
+        const val coreKtx = "androidx.core:core-ktx:${Versions.coreKtx}"
+        const val constraintlayout = "androidx.constraintlayout:constraintlayout:${Versions.constraintlayout}"
+        const val legacySupport = "androidx.legacy:legacy-support-v4:${Versions.legacySupport}"
+    }
+
+    object AndroidArchitecture {
+        const val navigation = "android.arch.navigation:navigation-fragment:${Versions.navigation}"
+        const val navigationKtx = "android.arch.navigation:navigation-fragment-ktx:${Versions.navigation}"
+        const val navigationUi = "android.arch.navigation:navigation-ui:${Versions.navigation}"
+        const val navigationUiKtx = "android.arch.navigation:navigation-ui-ktx:${Versions.navigation}"
+    }
+
+    object Google {
+        const val material = "com.google.android.material:material:${Versions.material}"
+    }
+
+    object Util {
+        const val timber = "com.jakewharton.timber:timber:${Versions.timber}"
+    }
+}

buildSrc/build.gradle.kts

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.3.1-all.zip