java.lang.RuntimeException Unable to instantiate application Caused by: java

参考：http://blog.csdn.net/xufazhong/article/details/71155528

  dependencies {
       classpath 'com.android.tools.build:gradle:2.2.3'
    //  classpath 'com.android.tools.build:gradle:2.3.0'  (干掉这句，，，，换成比他小的版本的！！！)

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