1. Manifest.xml - 2. Build.grade 2.1 project build.gradledependencies { classpath 'com.android.tools.build:gradle:1.2.3' classpath 'com.google.gms:google-services:1.3.0-beta1' 2.2 app/build.gradleapply plugin: 'com.android.application'apply plugin: 'com.google.gms.google-services'....compile 'com.google.android.gms:play-services-analytics:7.3.0' 여기서 알아야 할 중요한 것 하나. admob 광고를 사용하기 위해서는 compile 'c..