Could not resolve com.android.tools.build.gradle:3.0.1

Question

I'm forcing gradle to use http I have modified my gradle-wrapper.properties:

distributionUrl=http\://services.gradle.org/distributions/gradle-4.3-all.zip

The build.gradle:

buildscript {
repositories {
    //jcenter()
    //google()
    maven { url "http://jcenter.bintray.com"}     
    }
dependencies {
    classpath 'com.android.tools.build:gradle:3.0.1'

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

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

As far as I'm aware I should use 3.0.1 but when I check the actual repo on jitpack or maven only up to 2.3.3 is available.

The error message I'm getting is:

> Could not resolve all files for configuration ':classpath'.
> Could not find com.android.tools.build:gradle:3.0.1.
Searched in the following locations:
http://jcenter.bintray.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom
http://jcenter.bintray.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.jar
Required by:
     project :* Try:

Gradle version is 4.3.1 JVM 9.0.1

What can be done to successfully run 'gradle test' here?

EDIT: uncommenting //google() reveled:

       > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom'.
        > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom'.

When modified the http repo

buildscript {
repositories {
    //jcenter()
    //google()
    maven { url "http://jcenter.bintray.com"}
    maven { url "http://maven.google.com"}

    }

I got:

      > Could not resolve com.android.tools.build:gradle:3.0.1.
     > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom'.
        > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom'.
           > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  > Could not resolve com.android.tools.build:gradle:3.0.1.
     > Could not get resource 'http://maven.google.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom'.
        > Could not GET 'http://maven.google.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom'.
           > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

I get the same if I uncomment both jcenter() and google(). Besides, when I check https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/ the link is dead. Now the jcenter repo https://repo1.maven.org/maven2/com/android/tools/build/gradle/ ends on 2.3.3 version which seems to be correct that this error is happening, the question is what is wrong then?

EDIT- Likely solution the issue happenned because you can't run those excluding https completely, it will fail either way.

Answer 1

Could not resolve com.android.tools.build:gradle:3.0.1.

Read Google's Maven repository

Include Google's Maven repository in your top-level build.gradle file:

FYI

allprojects {
    repositories {
        google()

        // If you're using a version of Gradle lower than 4.1, you must instead use:
        // maven {
        //     url 'https://maven.google.com'
        // }
        // An alternative URL is 'https://dl.google.com/dl/android/maven2/'
    }
}

So, According to your version your build.gradle will

buildscript 
{

    repositories {
        jcenter()
        google()
        maven { url "http://jcenter.bintray.com"}     
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'

    }
}

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

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

Answer 2

I got the same issue and i solved it by making changes main gradle file, as per suggestion given by android studio

buildscript {
    repositories {
        jcenter()

        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
    }
}

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

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

gradle-wrapper.properties :

distributionUrl=  https\://services.gradle.org/distributions/gradle-4.1-all.zip

my gradle file is like this, make like this in you project it would most probably work.

Thank you.

Answer 3

What worked for me was to remove jcenter() and revert Gradle to an earlier version.

Unfortunately the latest stable version in bintray is 2.3.3 , but atleast I was able to build successfully.

My build.gradle now looks like this:

buildscript {
    repositories {
        maven { url "http://jcenter.bintray.com"}
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'

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

allprojects {
    repositories {
        maven { url "http://jcenter.bintray.com"}
    }
}