AS编译问题：Error:warning: Ignoring InnerClasses attribute for an anonymous inner class

Android studio在编译apk时报错：

Error:warning: Ignoring InnerClasses attribute for an anonymous inner class

Error:(android.support.v4.media.ae) that doesn't come with an

Error:associated EnclosingMethod attribute. This class was probably produced by a

Error:compiler that did not target the modern .class file format. The recommended

Error:solution is to recompile the class from source, using an up-to-date compiler

Error:and without specifying any "-target" type options. The consequence of ignoring

Error:this warning is that reflective operations on this class will incorrectly

Error:indicate that it is *not* an inner class.

经分析发现，是项目中导入了多个版本的v4/v7包，导致的。

检查项目引用的多个开源项目的build.gradle文件，修改统一其中的引用包版本：

dependencies {
compile 'com.nineoldandroids:library:2.4.0'
compile 'com.android.support:support-v4:23.3.0'
}