转自：http://www.apkbus.com/home.php?mod=space&uid=89514&do=blog&id=63614
报错信息内容摘要：
associated EnclosingMethod attribute
com.tencent.mm.opensdk.openapi.WXApiImplV10
com.tencent.mm.sdk.b.b
com.tencent.mm.opensdk.diffdev.a.c.class
具体信息
Ignoring InnerClasses attribute for an anonymous inner class (com.tencent.mm.sdk.b.b) that doesn"t come with an associated EnclosingMethod attribute. This class was probably produced by a compiler that did not target the modern .class file format. The recommended solution is to recompile the class from source, using an up-to-date compiler and without specifying any "-target" type options. The consequence of ignoring this warning is that reflective operations on this class will incorrectly indicate that it is not an inner class
解决方法：
build.gradle-> buildTypes
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard.cfg'
混淆的文件proguard.cfg加入�
-keep class com.tencent.mm.opensdk.** {
;
}
-keep class com.tencent.wxop.* {
;
}
-keep class com.tencent.mm.sdk.* {
*;
}
