detect android gradle plugin version by gradle version, solve the dependency issues

build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
//    com.android.tools.build:gradle:0.6.+ -> gradle 1.8
//    com.android.tools.build:gradle:0.7.+ -> gradle 1.9
//    com.android.tools.build:gradle:0.8.+ -> gradle 1.9/1.10
//    com.android.tools.build:gradle:0.9.+ -> gradle 1.10/1.11
//    com.android.tools.build:gradle:0.10.+ -> gradle 1.10/1.11/1.12
//    com.android.tools.build:gradle:0.11.+ -> gradle 1.10/1.11/1.12
//    com.android.tools.build:gradle:0.12.+ -> gradle 1.10/1.11/1.12
//    com.android.tools.build:gradle:0.13.+ -> gradle 1.12 / 2.1
//
//    Android Studio 0.3.x -> gradle-plugin 0.6
//    Android Studio 0.4.x -> gradle-plugin 0.7
//    Android Studio 0.4.3+ -> gradle-plugin 0.8
//    Android Studio 0.5.x -> gradle-plugin 0.9
//    Android Studio 0.5.8 -> gradle-plugin 0.9.+ or 0.10.+
//    Android Studio 0.5.9 -> gradle-plugin 0.9.+ or 0.10.4+
//    Android Studio 0.6.x -> gradle-plugin 0.11.+
//    Android Studio 0.8.x -> gradle-plugin 0.12.+
//
//    gradle 1.12 requires Android Studio 0.5.8+
        def abtPath = 'com.android.tools.build:gradle:0.5.+'
        switch(gradle.gradleVersion) {
            case ['1.4', '1.5', '1.6', '1.7', '1.8']:
                abtPath = 'com.android.tools.build:gradle:0.5.+'
                break;
            case ['1.9']:
                abtPath = 'com.android.tools.build:gradle:0.8.+'
                break;
            case ['1.10', '1.11']:
                abtPath = 'com.android.tools.build:gradle:0.11.+'
                break;
            case '1.12':
                abtPath = 'com.android.tools.build:gradle:0.12.+'
                break;
            case '2.1':
                abtPath = 'com.android.tools.build:gradle:0.13.+'
                break;
        }
        println "gradle version is ${gradle.gradleVersion}, " +
                "android build tool is ${abtPath}"
        classpath abtPath
    }
}