Gradle sync failed: Could not find com.android.tools.build:gradle

Android Studio导入工程，gradle一直报错，具体报错信息：

Gradle sync failed: Could not find com.android.tools.build:gradle:2.8.
         Searched in the following locations:
         file:/F:/studio/studio2.0/gradle/m2repository/com/android/tools/build/gradle/2.8/gradle-2.8.pom
         file:/F:/studio/studio2.0/gradle/m2repository/com/android/tools/build/gradle/2.8/gradle-2.8.jar
         https://jcenter.bintray.com/com/android/tools/build/gradle/2.8/gradle-2.8.pom
         https://jcenter.bintray.com/com/android/tools/build/gradle/2.8/gradle-2.8.jar
         Required by:
         :TestApk:unspecified
         Consult IDE log for more details (Help | Show Log)

找到SO的答案（只列举一个）：

http://stackoverflow.com/questions/34157716/android-studio-could-not-find-com-android-tools-buildgradle2-0-0-alpha2

没看懂。。。。后来才明白，是版本设置的太高了（楼主电脑可能失败，所以此处用本地Gradle），修改步骤：

1.在Gradle设置中，将Gradle设置在本地目录下F:/studio/studio2.0/gradle/gradle-2.8

2.将build.gralde中gradle的版本降低，楼主改为1.3.0

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.3.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

OK，重新Try Again，问题解决