找不到类“ com.google.firebase.provider.FirebaseInit

Question

这是应用程序级别的build.gradleapply plugin: 'com.android.application'apply plugin: 'android-apt' android {compileSdkVersion 24buildToolsVersion "24.0.1"defaultConfig {    applicationId "com.vfirst.ifbagro"    minSdkVersion 17    targetSdkVersion 24    versionCode 1    versionName "1.0"    multiDexEnabled true}buildTypes {    release {        minifyEnabled false        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }}}dependencies {compile fileTree(dir: 'libs', include: ['*.jar'])compile 'com.android.support:appcompat-v7:24.2.1'compile 'com.android.support:design:24.2.1'compile 'com.android.support:support-v4:24.2.1'compile 'com.google.android.gms:play-services-gcm:9.4.0'compile 'com.google.android.gms:play-services-location:9.4.0'compile 'com.android.support:multidex:1.0.1'compile 'com.google.firebase:firebase-messaging:9.4.0'compile 'com.google.android.gms:play-services:9.4.0'testCompile 'junit:junit:4.12'}apply plugin: 'com.google.gms.google-services'这是我的应用程序级别build.gradle// Top-level build file where you can add configuration options common to all sub-projects/modules.buildscript {repositories {    jcenter()    mavenCentral()}dependencies {    classpath 'com.android.tools.build:gradle:2.2.0'    classpath 'com.google.gms:google-services:3.0.0'    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'    classpath 'com.google.gms:google-services:3.0.0'    // 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}该如何解决呢？