Demo
https://gitee.com/olleh/my-kotlin-dsl.git
Gradle Kotlin DSL
- 我们现在Android Studio是使用Gradle来编译，而默认的构建语言是Groovy，我们可以用Kotlin来代替Groovy，Groovy构建脚本是.gradle结尾， Koltin构建的脚本则是.gradle.kts结尾
- 优势：
- 节约Groovy的学习成本
- 错误提示
- 代码自动补全
- 源码间可以相互转跳
开始改造
- settings.gradle
- project/build.gradle
- app/build.gradle
settings.gradle
- 重命名为settings.gradle.kts
//定义了主Module的路径
include(":app")
//定义了项目的名称
rootProject.name = "MyGradleKotlinDsl"
project/build.gradle
- 重命名为build.gradle.kts
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
//kotlin中的函数需要加上括号
classpath("com.android.tools.build:gradle:4.1.2")
classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.21")
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
//重写clean任务，删除build文件夹
tasks {
val clean by registering(Delete::class) {
delete(buildDir)
}
}
app/build.gradle
- 重命名为build.gradle.kts
plugins {
id("com.android.application")
id("kotlin-android")
}
android {
compileSdkVersion(30)
buildToolsVersion("30.0.3")
defaultConfig {
applicationId("com.zhangyu.mykotlindsl")
minSdkVersion(22)
targetSdkVersion(30)
versionCode(1)
versionName("1.0")
testInstrumentationRunner("androidx.test.runner.AndroidJUnitRunner")
}
buildTypes {
getByName("release") {
minifyEnabled(false)
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility(JavaVersion.VERSION_1_8)
targetCompatibility(JavaVersion.VERSION_1_8)
}
kotlinOptions {
jvmTarget = "1.8"
}
}
dependencies {
implementation("org.jetbrains.kotlin:kotlin-stdlib:1.4.21")
implementation("androidx.core:core-ktx:1.3.2")
implementation("androidx.appcompat:appcompat:1.2.0")
implementation("com.google.android.material:material:1.2.1")
implementation("androidx.constraintlayout:constraintlayout:2.0.4")
testImplementation("junit:junit:4.+")
androidTestImplementation("androidx.test.ext:junit:1.1.2")
androidTestImplementation("androidx.test.espresso:espresso-core:3.3.0")
}
统一依赖管理（ext扩展函数的替代）
- 在根目录下手动建立以下文件结构
- settings.gradle.kts
rootProject.buildFileName = "build.gradle.kts"
- build.gradle.kts
apply {
plugin("kotlin")
}
buildscript {
repositories {
gradlePluginPortal()
}
dependencies {
classpath ("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.21") }
}
dependencies {
implementation(gradleKotlinDsl())
implementation("org.jetbrains.kotlin:kotlin-stdlib:1.4.21")
}
repositories {
gradlePluginPortal()
}
- Versions
object Versions {
//kotlin版本
const val KotlinVersion = "1.4.21"
//SDK版本
const val compileSdkVersion = 30
const val buildToolsVersion = "30.0.3"
const val minSdkVersion = 22
const val targetSdkVersion = 30
//依赖
const val retrofit = "com.squareup.retrofit2:retrofit:2.9.0"
const val retrofit_converter_gson = "com.squareup.retrofit2:converter-gson:2.9.0"
const val retrofit_logging_interceptor = "com.squareup.okhttp3:logging-interceptor:4.7.2"
}
- 调用的地方，通过Version来调用
compileSdkVersion(Versions.compileSdkVersion)
buildToolsVersion(Versions.buildToolsVersion)
implementation(Versions.retrofit)
implementation(Versions.retrofit_converter_gson)
implementation(Versions.retrofit_logging_interceptor)