我几乎错过它来写，现在有一个很好的解决方案：

I almost missed it to write that there is now a nice solution:

android {
    buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
        }
    }
}

这是由Tor的诺尔比耶为构建工具0.14版上公开宣布 Google+的。 0

This was annouced on Google+ by Tor Norbye for the build tools version 0.14.0