签名之后就错误了，不知道什么情况，自己也加上了混淆配置

自己混淆应该是正确的。希望作者在Demo程序中加入避免混淆的代码。我加入的混淆代码是：

-keep class \* extends java.lang.annotation.Annotation
-keepclasseswithmembernames class \* {
native ;
}

错误日志为：
11-06 09:08:12.877: E/AndroidRuntime(3652): java.lang.IncompatibleClassChangeError: Couldn't find com.alipay.euler.andfix.annotation.MethodReplace.clazz
11-06 09:08:12.877: E/AndroidRuntime(3652): at libcore.reflect.AnnotationAccess.toAnnotationInstance(AnnotationAccess.java:659)
11-06 09:08:12.877: E/AndroidRuntime(3652): at libcore.reflect.AnnotationAccess.toAnnotationInstance(AnnotationAccess.java:641)
11-06 09:08:12.877: E/AndroidRuntime(3652): at libcore.reflect.AnnotationAccess.getDeclaredAnnotation(AnnotationAccess.java:171)
11-06 09:08:12.877: E/AndroidRuntime(3652): at java.lang.reflect.Method.getAnnotation(Method.java:300)
11-06 09:08:12.877: E/AndroidRuntime(3652): at com.alipay.euler.andfix.a.a(AndFixManager.java:199)
11-06 09:08:12.877: E/AndroidRuntime(3652): at com.alipay.euler.andfix.a.a(AndFixManager.java:179)
11-06 09:08:12.877: E/AndroidRuntime(3652): at com.alipay.euler.andfix.a.b.a(PatchManager.java:238)
11-06 09:08:12.877: E/AndroidRuntime(3652): at com.alipay.euler.andfix.a.b.b(PatchManager.java:165)
11-06 09:08:12.877: E/AndroidRuntime(3652): at com.ddsc.dotbaby.app.AppContext.onCreate(AppContext.java:87)
11-06 09:08:12.877: E/AndroidRuntime(3652): at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1013)

Start with the obfuscated Demo build and the annotation lookup shown in AndFixManager.java, especially the calls from AppContext.onCreate and PatchManager.java. Reproduce the signed build with the reported keep rules, then verify that startup no longer raises IncompatibleClassChangeError while reading MethodReplace.clazz.

Written by the indexing model from the issue text.