Android Studio: Gradle Refresh Failed - Could not find com.android.tools.build:gradle:2.2.0-alpha6

Question

I've just pulled down an Android project from git, and Android Studio is giving me the following error whenever I attempt to open it;

Error:Could not find com.android.tools.build:gradle:2.2.0-alpha6.
Searched in the following locations:
    https://repo1.maven.org/maven2/com/android/tools/build/gradle/2.2.0-alpha6/gradle-2.2.0-alpha6.pom
    https://repo1.maven.org/maven2/com/android/tools/build/gradle/2.2.0-alpha6/gradle-2.2.0-alpha6.jar
    https://maven.fabric.io/public/com/android/tools/build/gradle/2.2.0-alpha6/gradle-2.2.0-alpha6.pom
    https://maven.fabric.io/public/com/android/tools/build/gradle/2.2.0-alpha6/gradle-2.2.0-alpha6.jar
Required by:
    newApp_Android:app:unspecified

I've installed Gradle locally, and set up environment paths via System.

Under Project Structure/Project, the following setup is in use;

Gradle Version : 2.10
Android Plugin Version : 2.2.0-alpha6
Android Plugin Repository : jcenter
Default Library Repository : jcenter

Could anyone point me in the right direction on this?

Answer 1

This is because the build process is unable to find the dependency in Maven repository. Add jcenter() along with mavenCentral() in your project level build.gradle file.

buildscript {
    repositories {
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.0'
    }
}

Answer 2

So I had a similar error while I was trying to build ionic2 project for android. This happened after android studio updated gradle during its updates.

Error: cmd: Command failed with exit code 1 Error output:

FAILURE: Build failed with an exception.

• What went wrong: A problem occurred configuring root project 'android'.

  Could not resolve all dependencies for configuration ':_debugApk'. A problem occurred configuring project ':CordovaLib'. Could not resolve all dependencies for configuration ':CordovaLib:classpath'. Could not find com.android.tools.build:gradle:2.2.3. Searched in the following locations: https://repo1.maven.org/maven2/com/android/tools/build/gradle/2.2.3/gradle-2.2.3.pom https://repo1.maven.org/maven2/com/android/tools/build/gradle/2.2.3/gradle-2.2.3.jar Required by: android:CordovaLib:unspecified

I read the above answers which pointed to update a 'build.gradle' file but turns out there were multiple files with that name in the project. What worked for me (and hopefully helpful to whoever is working on angular2/ionic2 project and having this issue) is updating the build.gradle file at

[rootOfPorject]/platforms/android/CordovaLib/build.gradle

This file was missing the jcenter() entry and now the repository part looks like this and works like a charm.

repositories {
    jcenter()
    mavenCentral()
}

Hope this saves time for someone else.

EDIT: As @rcerecedar mentioned, you might also need to add jcenter() in the following file as well.

[rootOfPorject]/platforms/android/build.gradle

In this file you should check its present in buildscript -> repositories and also optionally in allprojects -> repositories

Answer 3

1.Goto "C:\Program Files\Android\Android Studio\gradle\m2repository\com\android\tools\build\gradle"

2.See the Latest folder name , i.e "2.2.3" , Copy It.

3.Go to build.gradle(Module:yourapp) file ,

Place here:

buildscript {
repositories {
    mavenCentral()
}
dependencies {
    classpath 'com.android.tools.build:gradle:2.2.3'
}