ButterKnife 8.0.1 not working

Question

I am using butterknife 8.0.1, but a nullpointerexception is appearing.

This line is on my build.grade file: compile \'com.ja

Answer 1

App Level(build.gradle)

apply plugin: 'android-apt'
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
    compile 'com.jakewharton:butterknife:8.4.0'
    apt 'com.jakewharton:butterknife-compiler:8.4.0'
}


Project Level(build.gradle)

buildscript {
    repositories {
        jcenter()
    }
    dependencies {

        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

Answer 2

Config Butterknife on build.gradle file like this,

compile("com.jakewharton:butterknife:8.5.1")
annotationProcessor "com.jakewharton:butterknife-compiler:8.5.1"

It works for me.

Answer 3

I used this library in Fragment and has NPE. My code was:

ButterKnife.bind(view);

But it was wrong. Library need to know two objects:
1) Target - with annotations @BindView
2) Source - with views

It will be right to write:

ButterKnife.bind(this, view);

When this - your fragment, and view - view of this fragment.

Answer 4

I had this issue too, just because I've added butterknife from Android Studio's Dependency management and not by copy-pasting gradle lines from Butterknife website. So I had to add compile 'com.jakewharton:butterknife:8.5.1' annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1' instead of just compile 'com.jakewharton:butterknife:8.5.1'

Answer 5

If you use kotlin:

make sure to use this dependency in module app:

dependencies {
   implementation 'com.jakewharton:butterknife:10.0.0'
   kapt 'com.jakewharton:butterknife-compiler:10.0.0'
}

Answer 6

From JakeWharton

Yes that plugin is no longer needed. You're already using annotationProcessor for the 'butterknife-compiler' artifact which is built-in to the Android Gradle plugin.

Then the solution is delete apt classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'