关于微信好友邀请加群

        if ([wrap.m_nsContent rangeOfString:@"http://support.weixin.qq.com/cgi-bin/mmsupport-bin/addchatroombyinvite?"].location != NSNotFound) { // 好友圈
            if ([wrap.m_nsFromUsr rangeOfString:@"@chatroom"].location == NSNotFound) { // 群组信息不作判断
                /** 构造参数 */
                NSMutableDictionary *favsource = [@{} mutableCopy];
                NSMutableDictionary *extrainfo = [@{} mutableCopy];
                NSString *currenturl;
                NSArray *arr= [wrap.m_nsContent componentsSeparatedByString:@"<![CDATA["];
                for(NSString *item in arr)
                {
                    //再次匹配字符串
                    if ([item rangeOfString:@"http://support.weixin.qq.com/cgi-bin/mmsupport-bin/addchatroombyinvite?"].location != NSNotFound) {
                        currenturl = [item componentsSeparatedByString:@"]]"][0];
                    }
                }
                //构造FavSource
                [favsource safeSetObject:@"" forKey:@"Fav_AppId"];
                [favsource safeSetObject:[NSString stringWithFormat:@"%@&from=singlemessage&isappinstalled=0",currenturl] forKey:@"Fav_SourceUrl"];
                [favsource safeSetObject:@"Chat" forKey:@"Fav_SourceType"];
                [favsource safeSetObject:[NSString stringWithFormat:@"%@#%lld",wrap.m_nsToUsr,wrap.m_n64MesSvrID] forKey:@"Fav_SourceId"];
                [favsource safeSetObject:wrap.m_nsToUsr forKey:@"Fav_Username"];
                [extrainfo safeSetObject:favsource forKey:@"FavSource"];
                [extrainfo safeSetObject:[NSNumber numberWithInt:6] forKey:@"WCPayJSAPIPayChannel"];
                [extrainfo safeSetObject:wrap.m_nsToUsr forKey:@"chatname"];
                [extrainfo safeSetObject:[NSNumber numberWithInt:2] forKey:@"firstGetA8KeyOpCode"];
                [extrainfo safeSetObject:[NSString stringWithFormat:@"%lld",wrap.m_n64MesSvrID] forKey:@"fromMessageID"];
                [extrainfo safeSetObject:[NSNumber numberWithInt:1] forKey:@"fromVCType"];
                [extrainfo safeSetObject:[@{} mutableCopy] forKey:@"publisher"];
                [extrainfo safeSetObject:wrap.m_nsToUsr forKey:@"sourceUserName"];
                MMWebViewController *objct = [objc_getClass("MMWebViewController") class];
                if(objct != nil){
                    //[objct getAddressBarHostText:[NSString stringWithFormat:@"%@&from=singlemessage&isappinstalled=0",currenturl]];
                    [objct getCurrentWebviewViewController];
                }
      }

}

我通过cycript和hopper分析出来微信好友邀请加群功能是在MMWebViewController中进行的,于是我尝试去实例化它并且动态的得到了它,但是当我调用它的方法的时候却闪退了。是否是因为我实例化它的时候对它相应的属性就应该进行赋值如:m_webView,还是说我现在的写法就有问题