Gradle build fails: Unable to find method 'org.gradle.api.tasks.testing.Test.getTestClassesDirs()Lorg/gradle/api/file/FileCollection;'

Question

When i am trying to compile a imported project from github, my gradle build always fails with the following exeption.

Unable to find method 'org.gradle.api.tasks.testing.Test.getTestClassesDirs()Lorg/gradle/api/file/FileCollection;'
Possible causes for this unexpected error include:<ul><li>Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
Re-download dependencies and sync project (requires network)</li><li>The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
Stop Gradle build processes (requires restart)</li><li>Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.</li></ul>In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes

I followed the instructions given but it didn't work out. Additionally i couldn't get any further information about the error by searching it in the internet

app\build.gradle:

   apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "iammert.com.androidarchitecture"
        minSdkVersion 21
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    dataBinding {
        enabled = true
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    /*androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })*/
    //  testCompile 'junit:junit:4.12'

    //support lib
    implementation rootProject.ext.supportLibAppCompat
    implementation rootProject.ext.supportLibDesign

    implementation rootProject.ext.archRuntime
    implementation rootProject.ext.archExtension
    annotationProcessor rootProject.ext.archCompiler

    implementation rootProject.ext.roomRuntime
    annotationProcessor rootProject.ext.roomCompiler

    implementation rootProject.ext.okhttp
    implementation rootProject.ext.retrofit
    implementation rootProject.ext.gsonConverter

    //dagger
    annotationProcessor rootProject.ext.daggerCompiler
    implementation rootProject.ext.dagger
    implementation rootProject.ext.daggerAndroid
    implementation rootProject.ext.daggerAndroidSupport
    annotationProcessor rootProject.ext.daggerAndroidProcessor

    //ui
    implementation rootProject.ext.picasso

}

\build.gradle:

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

buildscript {

    repositories {
        maven { url 'https://maven.google.com' }
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0-alpha3'

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

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

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

ext {
    supportLibVersion = '25.3.1'
    daggerVersion = '2.11'
    retrofitVersion = '2.1.0'
    gsonConverterVersion = '2.1.0'
    okhttpVersion = '3.8.0'
    picassoVersion = '2.5.2'
    archVersion = '1.0.0-alpha1'

    supportLibAppCompat = "com.android.support:appcompat-v7:$supportLibVersion"
    supportLibDesign = "com.android.support:design:$supportLibVersion"
    archRuntime = "android.arch.lifecycle:runtime:$archVersion"
    archExtension = "android.arch.lifecycle:extensions:$archVersion"
    archCompiler = "android.arch.lifecycle:compiler:$archVersion"
    roomRuntime = "android.arch.persistence.room:runtime:$archVersion"
    roomCompiler = "android.arch.persistence.room:compiler:$archVersion"
    dagger = "com.google.dagger:dagger:$daggerVersion"
    daggerCompiler = "com.google.dagger:dagger-compiler:$daggerVersion"
    daggerAndroid = "com.google.dagger:dagger-android:$daggerVersion"
    daggerAndroidSupport = "com.google.dagger:dagger-android-support:$daggerVersion"
    daggerAndroidProcessor = "com.google.dagger:dagger-android-processor:$daggerVersion"
    retrofit = "com.squareup.retrofit2:retrofit:$retrofitVersion"
    gsonConverter = "com.squareup.retrofit2:converter-gson:$gsonConverterVersion"
    okhttp = "com.squareup.okhttp3:okhttp:$okhttpVersion"
    picasso = "com.squareup.picasso:picasso:$picassoVersion"
}

gradle\gradle-wrapper.properties:

#Thu May 18 17:31:31 EEST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-milestone-1-all.zip

Does anyone know why this error occures?

Answer 1

I had to change the distributionUrl in the gradle-wrapper.properties to distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip to get the build running again. This seems to be a similar problem Gradle sync failed: Unable to find method.

Answer 2

I fix same as this error by add classpath 'com.android.tools.build:gradle:3.2.1' in the build.gradle project

buildscript {

    repositories {
        maven { url 'https://maven.google.com' }
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'

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

Answer 3

If you are getting this error after deleting .gradle and .idea files then the error is happening because the Gradle files are not available for this project and Android studio is unable to download the same version of the Gradle dependency. You can switch to a lower version of the Gradle choose from here and then go to gradle-wrapper-properties file and change the version, in my case I changed it from distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip to distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip. After downloading the older version of the Gradle dependency a Gradle update dialog box would prompt through which you can get the latest version back which is 5.1.1 in this case.