由于Android上的lint classpath错误，Gradle构建失败

Question

我有一个Android应用程序，运行以下命令时其构建失败： ./gradlew clean build -Pbuild=dev --stacktrace

这是我收到的错误：

> Task :app:lint FAILED

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':app:lint'.
> No value has been specified for property 'lintClassPath'.

应用模块的build.gradle文件：

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'kotlin-kapt'

apply plugin: 'io.fabric'

apply plugin: "androidx.navigation.safeargs"

// For Epoxy
kapt {
    correctErrorTypes = true
}

android {
    kotlinOptions {
        jvmTarget = '1.6'
    }
    compileSdkVersion 28
    defaultConfig {
        applicationId "..."
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 8
        versionName "0.4"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
        debug {
            if (project.hasProperty('ApiKey')) {
                buildConfigField('String', 'API_KEY', ApiKey)
            } else {
                buildConfigField('String', 'API_KEY', "\"mock-key\"")
            }
        }
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            if (project.hasProperty('ApiKey')) {
                buildConfigField('String', 'API_KEY', ApiKey)
            } else {
                buildConfigField('String', 'API_KEY', "\"mock-key\"")
            }
        }

    }

    def build_param = "${build}"

    if (build_param != "dev") {
        //exclude production build
        android.variantFilter { variant ->
            if (variant.buildType.name == 'dev') {
                variant.setIgnore(true)
            }
        }
    } else {
        //exclude all except production build
        android.variantFilter { variant ->
            if (variant.buildType.name != 'dev') {
                variant.setIgnore(true)
            }
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    androidExtensions {
        experimental = true
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"

    // Android
    def lifecycle_version = "2.0.0"
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha02'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha3'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
    implementation 'com.google.android.material:material:1.0.0'
    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
    implementation 'androidx.core:core-ktx:1.0.1'
    implementation 'androidx.preference:preference:1.0.0'
    implementation 'androidx.legacy:legacy-preference-v14:1.0.0'

    def room_version = "2.1.0-alpha04"
    implementation "androidx.room:room-runtime:$room_version"
    implementation "androidx.room:room-rxjava2:$room_version"
    kapt "androidx.room:room-compiler:$room_version"

    def nav_version = "1.0.0-rc02"
    implementation "android.arch.navigation:navigation-fragment-ktx:$nav_version"
    implementation "android.arch.navigation:navigation-ui-ktx:$nav_version"

    // Networking
    implementation 'com.squareup.retrofit2:retrofit:2.5.0'
    implementation 'com.squareup.retrofit2:adapter-rxjava2:2.5.0'
    implementation 'com.squareup.okhttp3:okhttp:3.13.1'
    implementation 'com.squareup.okhttp3:logging-interceptor:3.13.1'
    implementation 'com.squareup.retrofit2:converter-moshi:2.4.0'
    implementation 'com.squareup.moshi:moshi-adapters:1.8.0'
    // DI
    def koin_version = "1.0.2"
    implementation "org.koin:koin-android:$koin_version"
    implementation "org.koin:koin-androidx-scope:$koin_version"
    implementation "org.koin:koin-androidx-viewmodel:$koin_version"
    // Rx
    implementation 'io.reactivex.rxjava2:rxjava:2.2.7'
    implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
    implementation 'io.reactivex.rxjava2:rxkotlin:2.3.0'
    implementation 'com.jakewharton.rxbinding2:rxbinding:2.2.0'
    implementation 'com.jakewharton.rxrelay2:rxrelay:2.1.0'
    // Image Loading
    implementation 'com.github.bumptech.glide:glide:4.8.0'
    kapt 'com.github.bumptech.glide:compiler:4.8.0'
    // Tests
    testImplementation 'junit:junit:4.12'
    testImplementation 'org.mockito:mockito-core:2.24.5'
    androidTestImplementation 'androidx.test:runner:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
    // UI
    implementation 'com.pierfrancescosoffritti.androidyoutubeplayer:core:9.0.1'
    implementation 'com.airbnb.android:epoxy:3.2.0'
    kapt 'com.airbnb.android:epoxy-processor:3.2.0'
    implementation 'com.github.VladimirWrites:Lemniscate:1.4.4'
    // Firebase
    implementation 'com.google.firebase:firebase-core:16.0.7'
    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.9'
}

apply plugin: 'com.google.gms.google-services'

项目级别的build.gradle文件：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.kotlin_version = '1.3.21'
    repositories {
        jcenter()
        maven {
            url 'https://maven.fabric.io/public'
        }
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:google-services:4.2.0'
        classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:1.0.0-rc02"
        classpath 'io.fabric.tools:gradle:1.27.0'
    }
}

allprojects {
    repositories {
        jcenter()
        maven {
            url 'https://maven.google.com/'
        }
        maven {
            url 'https://jitpack.io'
        }
        google()
    }
}

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

我不确定如何解决此问题。降级Android Gradle插件无法解决问题，在Github或Stackoverflow上的任何地方都没有与此相关的问题。

有谁知道如何解决这个问题？

Answer 1

在我的情况下，由于ANDROID_HOME未设置环境变量而触发了此错误

Answer 2

此问题的原因是Gradle找不到Android SDK。有几种解决方法：

定义ANDROID_HOME环境变量

ANDROID_HOME=your/path/to/android/sdk; export ANDROID_HOME

或添加sdk.dir到文件local.properties，例如在我的Linux计算机上

sdk.dir=/home/sdeng/Android/Sdk

如果您已经定义ANDROID_HOME或sdk.dir，它仍然会发生。您的Android SDK或Gradle守护程序的特定版本可能有问题。尝试杀死所有Gradle进程，然后重新下载特定版本的Android SDK。

或者，你可以检查在目录中的SDK $ANDROID_HOME/platforms/android-28，其中28是compileSdkVersion在定义build.gradle

Answer 3

我已经弄清楚问题出在哪里了。我使用构建参数“dev”( Pbuild=dev) 来确保 CI（在本例中为 Travis）使用google-services.json放置在app/src/dev文件夹中的文件的模拟版本。但是，我忘记在模块的 build.gradle 文件中配置“dev”构建变体。

解决方案是在所有模块中添加dev构建类型，如下所示：

构建.gradle

android {
  ...

  buildTypes {
    release {
      ...
    }
    debug {
      ...
    }
    dev {
      minifyEnabled false
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

请注意，您必须对项目中的所有模块执行此操作。