title: Could not resolve com.google.gms:google-services:3.0.0
body: <p>I read many posts on this topic, but no one helped me.
  I'm using Android Studio and following this <a href="https://firebase.google.com/docs/android/setup?hl=it" rel="noreferrer">guide</a></p>
  
  <p>This is the project gradle:</p>
  
  <pre><code>buildscript {
      repositories {
          jcenter()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:2.2.3'
          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()
      }
  }
  </code></pre>
  
  <p>this is the app gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
      android {
          compileSdkVersion 25
          buildToolsVersion "25.0.1"
          defaultConfig {
              applicationId "com.xyv.appname"
              minSdkVersion 15
              targetSdkVersion 25
              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(dir: 'libs', include: ['*.jar'])
          androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
              exclude group: 'com.android.support', module: 'support-annotations'
          })
          compile 'com.android.support:appcompat-v7:25.0.1'
          compile 'com.android.support:design:25.0.1'
          testCompile 'junit:junit:4.12'
          compile 'com.google.firebase:firebase-core:10.0.1'        
      }
      apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>Here you can see where I added google-services.json inside my app:</p>
  
  <p><a href="https://i.stack.imgur.com/hBFpS.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/hBFpS.jpg" alt="enter image description here"></a></p>
  
  <p>These are my SDK tools:</p>
  
  <p><a href="https://i.stack.imgur.com/2Cx2p.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/2Cx2p.jpg" alt="enter image description here"></a></p>
  
  <p>Does anybody understand what's my error?</p>
  
  <p>Thank you in advance</p>