将 Groovy 任务 build.gradle 转换为 kotlin kts 文件

Question

I am trying to convert my build.gradle file in Groovy to a kotlin.kts file, I have some tasks in the gradle file that I dont know how to convert correctly

task androidJavadocs(type: Javadoc) {
    failOnError = false
    source = android.sourceSets.main.java.srcDirs
    ext.androidJar = "${android.sdkDirectory}/platforms/${android.compileSdkVersion}/android.jar"
    classpath += files(ext.androidJar)
    exclude '**/R.html', '**/R.*.html', '**/index.html'
}

task androidJavadocsJar(type: Jar, dependsOn: androidJavadocs) {
    classifier = 'javadoc'
    from androidJavadocs.destinationDir
}

我不太明白如何使用“类型”，我正在走这条路

val androidJavadocs by tasks.withType<Javadoc>(){

}

但它给了我错误

类型 'DomainObjectCollection<Javadoc,>' 没有方法 'getValue(Build_gradle, KProperty<*>)'，因此它不能用作委托

如何正确地将那些 groovy 任务转换为 kotlin 任务？

Answer 1

您可以使用named()方法来配置现有任务，并使用register()方法来创建新任务。

tasks {
    register<Javadoc>("androidJavadocs") {
        // Task's body here
    }
}

// or

tasks.register<Javadoc>("androidJavadocs") {
    // Task's body here
}

如果要使用 Kotlin 委托属性

val androidJavadocs by tasks.registering(Javadoc::class) {
    // Task's body here
}

您问题的完整答案

val androidJavadocs by tasks.registering(Javadoc::class) {
    isFailOnError = false
    source = android.sourceSets.main.java.srcDirs
    ext["androidJar"] = "${android.sdkDirectory}/platforms/${android.compileSdkVersion}/android.jar")
    classpath += files(ext["androidJar"])
    exclude("**/R.html", "**/R.*.html", "**/index.html")
}

val androidJavadocsJar by tasks.registering(Jar::class) {
    classifier = "javadoc"
    dependsOn(androidJavadocs)
    from(androidJavadocs.get().destinationDir)
}