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Butterknife gradle error on Android Studio 3.0 due to android-apt plugin

Question:

After upgrading to Android Studio 3.0 I had some issues with gradle that I was able to fix checking on the developers website

However, I was not able to find how to fix the issue with the apply plugin: 'android-apt' I have tried several things such as removing it from the project gradle and add it to the app gradle as annotationProcessor 'com.neenbedankt.gradle.plugins:android-apt:1.8' . also removed the apt, etc, etc.

Anyway, Studio is complaining about it. Any help is greatly appreciated. Thanks!

    // Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        classpath 'com.google.gms:google-services:3.1.1'

    }
}

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

    ext {
        supportLibVersion = '27.0.0'
        firebaseLibVersion = '11.4.2'
    }
}

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

APP GRADLE

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    buildToolsVersion "27.0.0"
    defaultConfig {
        applicationId "xxxxxxxxxxxxxxxxxxxx"
        minSdkVersion 17
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"

        vectorDrawables.useSupportLibrary = true

    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    apply plugin: 'android-apt'
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')

    compile "com.android.support:appcompat-v7:${supportLibVersion}"
.....

    compile 'com.google.android.gms:play-services-auth:11.4.2'

    compile 'com.jakewharton:butterknife:8.4.0'
    apt 'com.jakewharton:butterknife-compiler:8.4.0'

}
apply plugin: 'com.google.gms.google-services'

Answer:

Do not use apt plugin, add the dependency like this:

compile "com.jakewharton:butterknife:8.8.1"
annotationProcessor "com.jakewharton:butterknife-compiler:8.8.1"

Reference

Android studio 3.0 : error occur while compiling app

Question:

Got error while compiling android application.

Execution failed for task ':app:javaPreCompileDebug'
The following dependencies on the compile classpath are found to contain annotation processor.Please add them to the annotationProcessor configuration.
- butterknife-5.1.2.jar (butterknife-5.1.2.jar)

Answer:

Dont use 5.1.2 jar.Instead use this latest version in the gradle and also use the annotation to make it work.

dependencies {
    compile 'com.jakewharton:butterknife:8.8.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}