1.Error:The project is using an unsupported version of the Android Gradle plug-in (0.12.2). The recommended version is 1.2.3.

    根據提示，在build.gradle 把
        dependencies {
            classpath 'com.android.tools.build:gradle:0.12.+'
        }

    修改為
        dependencies {
            classpath 'com.android.tools.build:gradle:1.2.3'
        }
 

2.上面修改後會出現如下錯誤：Error:Unable to load class ‘org.codehaus.groovy.runtime.typehandling.ShortTypeHandling’.Possible causes for this unexpected error include:You are using JDK version ‘java version “1.7.0_71”’. Some versions of JDK 1.7 (e.g. 1.7.0_10) may cause class loading errors in Gradle.Please update to a newer version (e.g. 1.7.0_67).

明明用的就是jdk1.7.0_71[比1.7.0_67還新] 卻提示不對，問題起始不在jdk這而是 gradle-wrapper.properties distributionUrl=http://services.gradle.org/distributions/gradle-1.12-all.zip 用的是jdk1.7.0.10

    把    distributionUrl=http://services.gradle.org/distributions/gradle-1.12-all.zip
    修改為 distributionUrl=https://services.gradle.org/distributions/gradle-2.2.1-all.zip
 

ok ，經過上面兩步，從studio匯入eclipse專案的正常使用。