could not find com.android.tools.build:gradle:2.2.3

将项目的 build.gradle中的

buildscript {    repositories {        mavenCentral()    }    dependencies {        classpath 'com.android.tools.build:gradle:2.2.3'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'    }}allprojects {    repositories {        jcenter()    }}task clean(type: Delete) {    delete rootProject.buildDir}

改为：

buildscript {    repositories {        jcenter()    }    dependencies {        classpath 'com.android.tools.build:gradle:2.2.3'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'    }}allprojects {    repositories {        jcenter()    }}task clean(type: Delete) {    delete rootProject.buildDir}

随后，Android 会对一些内容进行update ，即可解决。