Gradle is issuing an error "Could not create plugin of type 'AppPlugin'"

Question

I'm trying to create a simple android project with gradle. I work in a computer with Debian GNU/Linux 7 'wheezy'.

I followed the recomendations in Gradle Plugin User Guide - Android Tools Project Site, but it casts an error:

FAILURE: Build failed with an exception.

* Where:
Build file '/home/alex/Proyectos/MyLogin/build.gradle' line: 11

* What went wrong:
A problem occurred evaluating root project 'MyLogin'.
> Could not create plugin of type 'AppPlugin'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 4.817 secs

I followed the specifications:

• Gradle 1.9
• Plugin 0.7
• SDK 17+ (actually 19)

I also started a project anew, and the results I showed were issued by the command gradle tasks as shown in the documentation.

I also tried gradle 1.10, but the result is the same.

Even this question was not usefull, since it solved with 'upgrading' to gradle 1.6 (I understand that plugin 0.7 requires at least gradle 1.9).

I tried this after failing with the same error in android-studio and IntelliJ Idea.

EDIT: I also tried with new projects in both IDEs, and got the same issue. But what most surprises me is that both IDEs use gradle 1.8 in their wrapped form. I tried to cinfigure both of them to use my local gradle install, but still the same issue.

What am I doing wrong? Is it a bug? How can I avoid the problem?

Please, help me.

EDIT: Here is my build.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.7.+'
    }
}

apply plugin: 'android'

repositories {
    mavenCentral()
}

android {
    compileSdkVersion 14
    buildToolsVersion '19.0.1'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
    }
}

sourceCompatibility = 1.6

version = '0.1'

dependencies {
    compile 'com.android.support:support-v4:18.0.0'
    //compile project(':core')
}

Answer 1

Google made a mistake with version 0.7.2 of the Gradle plugin:

Note: 0.7.2 requires Java7. This is a mistake. Use 0.7.3 instead.

Release 0.7.3 re-enables Java6 support. Declaring Gradle 0.7.3 in my build files does indeed resolve this for me.

No one is perfect :)

http://tools.android.com/tech-docs/new-build-system

Answer 2

Use Gradle 1.9 instead of Gradle 1.10. There is an issue with 1.10 : https://code.google.com/p/android/issues/detail?id=63822

Also answered here:

Can't find org.gradle.api.artifacts.result.ResolvedModuleVersionResult when apply Android plugin in Gradle

Answer 3

I got it working using Gradle 1.10 with the Gradle plugin 0.8.0.

// /build.gradle
// Top-level build file where you can add configuration 
// options common to all sub-projects/modules.
buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.8.+'
    }
}

...

# /gradle/wrapper/gradle-wrapper.properties.
#Sat Feb 01 20:41:29 CET 2014
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-bin.zip

Answer 4

If you're using the command line to create the project like so:

android create project -g -v 1.2.2 --target 1 --name rtest --path rtest --activity MainActivity --package com.mydomain.rtest

The project is created to use version 1.2.2 of the android-gradle-plugin, but the project is initialised with gradle 1.12, which isn't compatible.

To fix it, do the following:

1. Open rtest/gradle/wrapper/gradle-wrapper.properties and set distributionUrl to the release you want; for example: http\://services.gradle.org/distributions/gradle-2.2.1-all.zip (don't forget to escape the colon - yes, that makes me smile too);
2. Open build.gradle and change runProguard false to minifyEnabled false;
3. ./gradlew clean && ./gradlew assembleDebug
4. I also remove the hidden .gradle folder, but I'm not sure if it's necessary

And it all works again.