Gradle DSL method not found: 'apt()'

Question

I am trying to add the latest version of butterknife and I get this error from gradle:

Error:(31, 0) Gradle DSL method not found: 'apt()' Possible causes:

The project 'MyProject' may be using a version of Gradle that does not contain the method. Gradle settings

The build file may be missing a Gradle plugin. Apply Gradle plugin

Where my gradle mobile build.gradle is:

plugins {
    id "net.ltgt.apt" version "0.6"
}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.mynamspace.myproject"
        minSdkVersion 19
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    wearApp project(':wear')
    testCompile 'junit:junit:4.12'
    compile 'com.jakewharton:butterknife:8.0.0'
    apt 'com.jakewharton:butterknife-compiler:8.0.0'
    compile 'com.android.support:appcompat-v7:23.3.0'
    compile 'com.google.android.gms:play-services:8.4.0'
    compile 'com.android.support:design:23.3.0'
    compile 'com.android.support:support-v4:23.3.0'
    compile 'com.android.support:recyclerview-v7:23.3.0'
}

What's wrong with the gradle-apt-plugin?

Solution 1

It's entirely possible that there's a way to get your plugins to work. Given your error, I'd start by following what the ButterKnife project uses, get that working, then see if there is a recipe for what you're trying.

First, in your top-level build.gradle file, include classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8' in the buildscript dependencies, such as:

  buildscript {
    repositories {
      mavenCentral()
    }
    dependencies {
      classpath 'com.android.tools.build:gradle:2.0.0'
      classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
    }
  }

Then, in your module's build.gradle file, include apply plugin: 'com.neenbedankt.android-apt' towards the top.

The links are to the relevant files from the ButterKnife GitHub repo, from the project and the dedicated sample app.

Solution 2

apt is obsolete, Change apt to new format:

change

apt 'com.jakewharton:butterknife-compiler:8.5.1'

to

annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'

https://bitbucket.org/hvisser/android-apt/wiki/Migration

http://jakewharton.github.io/butterknife/

Solution 3

Instead of:

    plugins {id "net.ltgt.apt" version "0.6"}

try:

    apply plugin: 'android-apt'

Solution 4

In my case helped: adding to your build.gradle (not main, but project one) :

apply plugin: 'com.neenbedankt.android-apt'

and

buildscript {
    repositories {
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.7'
    }
}

View more solutions

Comments

[CommonsWare]

I haven't seen that plugins syntax before, and that does not appear to be the android-apt plugin.

[Michel Feinstein]

That's the new mecanism of gradle plugins: plugins.gradle.org/plugin/net.ltgt.apt (look for the "About the new plugin mechanism").

[Michel Feinstein]

Where do I get the android-apt plugin?...I confess I am a bit lost here, I don't know much about gradle, I just got this plugin in a google search for "gradle apt"

[Michel Feinstein]

Thanks for the help! The project's page (jakewharton.github.io/butterknife) have these configurations missing.....but the github page doesnt (github.com/JakeWharton/butterknife) and they are pretty much the same as your code.

[Matthew Housser]

Coming from ButterKnife 7.0.1 to 8.0.1 - the upgrade was not at all obvious. All these extra Gradle entries were not explained very well at all. Finally have it working now thanks to your advice, @CommonsWare!

[m02ph3u5]

apply at top did it

[q...]

this is for Android Gradle Plugin >= 2.2, if < 2.2 use the accepted answer