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?

Answer 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.