butterknife8.4.0控件注解框架无法使用问题

// 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:2.2.2'
classpath 'com.jakewharton:butterknife-gradle-plugin:8.4.0'     //添加这行
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}

allprojects {
repositories {
jcenter()
}
}

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

apply plugin: 'com.android.application'

android {
compileSdkVersion 24
buildToolsVersion "24.0.3"
defaultConfig {
applicationId "app.baidian.com.myapplication"
minSdkVersion 15
targetSdkVersion 24
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:24.2.1'
testCompile 'junit:junit:4.12'
compile 'com.squareup.retrofit2:retrofit:2.0.0-beta3'
compile 'com.squareup.retrofit2:adapter-rxjava:2.0.0-beta3'
compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta3'
compile 'com.squareup.okhttp3:logging-interceptor:3.1.2'
compile 'com.google.code.gson:gson:2.6.2'
compile 'io.reactivex:rxandroid:1.1.0'
compile 'io.reactivex:rxjava:1.1.0'
compile 'com.jakewharton:butterknife:7.0.1'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.3'
compile 'com.google.android.gms:play-services-appindexing:8.4.0'
compile 'com.lsjwzh:materialloadingprogressbar:0.5.8-RELEASE'
compile 'com.android.support:cardview-v7:24.2.0'
compile 'com.android.support:design:24.2.0'
compile 'com.android.support:appcompat-v7:24.1.0'
compile 'com.android.support:recyclerview-v7:24.1.0'
/*****************butterknife:8.4.0 start*****************/
compile 'com.jakewharton:butterknife:8.4.0'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'//主要是这两句
/*****************butterknife:8.4.0 end******************/

}