构建失败，并在Kotlin中出现异常错误 [英] Build failed with an exception error in Kotlin

问题描述

在android studio上更新我的Kotlin插件后收到此错误.

Got this error after updating my Kotlin plugin on android studio.

package com.example.test

fun main(args: Array<String>) {
    println("Hello world")
}

这是我收到的错误:

* Where:
Initialization script '/private/var/folders/bn/st769wd16nv1d5_wccw8_tm00000gn/T/Test_main__2.gradle' line: 27

* What went wrong:
A problem occurred configuring project ': app'.
> Could not create task ':app:Test.main()'.
   > SourceSet with name 'main' not found.

运行堆栈跟踪时，这是我得到的响应:

When I run a stack trace, this is the response I get:

Caused by: org.gradle.api.internal.tasks.DefaultTaskContainer$TaskCreationException: Could not create task ':app:Test.main()'.

Caused by: org.gradle.api.UnknownDomainObjectException: SourceSet with name 'main' not found.

这是我的build.gradle(应用程序)文件

Here is my build.gradle (app) file

plugins {
    id 'com.android.application'
    id 'kotlin-android'
}

android {
    compileSdkVersion 30
    buildToolsVersion "29.0.3"

    defaultConfig {
        applicationId "com.example.test"
        minSdkVersion 23
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        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:$kotlin_version"
    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:4.13.1'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

build.Gradle(测试)

build.Gradle (test)

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = "1.4.20"
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.1"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.Gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

我已经更新了所有依赖项，使缓存无效并重新启动，尝试删除.idea和.gradle文件夹，并创建了新项目，但是问题仍然存在.

I have updated all my dependencies, invalidated caches and restarted, tried to delete my .idea and .gradle folder, and created new projects but the issue still persists.

推荐答案

这是告诉您，您创建了一个Android项目，但是Android应用程序使用Android生命周期运行，而不是main生命周期.

This is telling you that you created an Android project but that Android applications use the Android lifecycle to run, not main.

如果您要执行普通的kotlin代码，一种选择是使用File->向项目添加kotlin库.新模块-> Kotlin并在其中添加主要方法

If you want to execute plain kotlin code one option is to add a kotlin library to the project using File -> New Module -> Kotlin and add the main method there

这篇关于构建失败，并在Kotlin中出现异常错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！