Version conflict updating to 8.4.0

Use these dependencies for the project build.gradle

dependencies {    classpath 'com.android.tools.build:gradle:2.0.0-alpha3'    classpath 'com.google.gms:google-services:2.0.0-alpha3'}

and put this at the end of the app-level build.gradle file (after the dependencies).

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

I have no clue why putting this at the end (and not at the beginning ) solves the error.

EDIT 5/1/2016

Ok… So trying to put an end to all problems you guys have faced with my solution

This is my final app level gradle

apply plugin: 'com.android.application'android {    compileSdkVersion 23    buildToolsVersion "23.0.2"    defaultConfig {        applicationId "your-app-name"        minSdkVersion 16        targetSdkVersion 23        versionCode 1        versionName "1.0"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}repositories {    jcenter()}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:23.1.1'    compile 'com.google.android.gms:play-services:8.4.0'    compile 'com.android.support:design:23.1.1'    compile 'com.mcxiaoke.volley:library:1.0.6@aar'}apply plugin: 'com.google.gms.google-services'

and this is my final project level gradle

// 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:2.0.0-alpha3'        classpath 'com.google.gms:google-services:2.0.0-alpha3'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files    }}allprojects {    repositories {        jcenter()    }}

Compare this with your own gradle files, and add or modify any values which are different from what I've written.

In the application's module (build.gradle)

Moving :

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

to the last line solved the issue.

Do the following:

1. Put the following in your build.gradle(Application level gradle file)

   dependencies {      classpath 'com.android.tools.build:gradle:2.0.0-beta2'      classpath 'com.google.gms:google-services:2.0.0-beta2'}

Please check here for latest version as this keep on changing.

2. If you get the below error message than you need to upgrade your gradle wrapper to latest in gradle-wrapper.properties. I'm using 2.10.

Plugin is too old, please update to a more recent version, or set ANDROID_DAILY_OVERRIDE environment variable

3. Put the following line at the bottom of your build.gradle(module level gradle file)

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