xposed hook all method of ViewGroup crash - xposed

Question

I want to hook all method of ViewGroup, so write below code:
final Class<?> mViewGroup = XposedHelpers.findClass("android.view.ViewGroup", lpparam.classLoader);
for (final Method method : mViewGroup.getDeclaredMethods()) {
if (true == Modifier.isAbstract(method.getModifiers())){
XposedBridge.log("skip abstract:" + method.getName());
continue;
}
XposedBridge.log("----" + method.getName());
XposedBridge.hookMethod(method, methodHook);
}
final StringBuilder sb = new StringBuilder();
XC_MethodHook methodHook = new XC_MethodHook() {
#Override
protected void beforeHookedMethod(XC_MethodHook.MethodHookParam param) throws Throwable {
dumpParams(param);
}
#Override
protected void afterHookedMethod(XC_MethodHook.MethodHookParam param) throws Throwable {
//param.setResult(false);
XposedBridge.log("after:" + param.getResult());
}
};
private void dumpParams(XC_MethodHook.MethodHookParam param) {
sb.setLength(0);
sb.append(param.method.getName()).append("(");
for (Object o:param.args) {
String typnam = "";
String value = "null";
if (o != null) {
typnam = o.getClass().getName();
value = o.toString();
}
sb.append(typnam).append(":").append(value).append(", ");
}
XposedBridge.log(sb.toString());
}
But when I run it, hook class sounds fine, but when execute it crashed at android.view.View$AttachInfo:
am_crash: `java.lang.IllegalAccessError,Illegal class access: 'EdHooker45' attempting to access 'android.view.View$AttachInfo' (declaration of 'EdHooker45' appears in /data/user_de/0/.../1129433416.jar),NULL,120]`