如何扭转动画 - android(how to reverse an animation - android)

 之前已经多次说过，但我只是因为我在商业规则行业（大学，而不是供应商）而再次说出来，业务规则正迅速成为任何IT开发的重要组成部分。 
 
 你的团队很可能会花费大量的金钱，时间和精力来重新发明轮子。 创建一个评估规则的代码通常不是问题。 而你似乎已经解决了它。 现在，您正面临着最具挑战性的部分：UI。 
 
 尽管所有的书都说最重要的业务规则是业务逻辑与主系统的分离，但我认为实际上拥有业务规则引擎的最重要的一点是让BUSINESS PEOPLE自己创建这些规则，没有打扰程序员。 这意味着一个可靠的UI。 
 
 有一些业务规则引擎具有出色的用户界面，可以完成您所需要的一切，并且可以更低效地实现这一目标。 其中一些是免费的或有免费选项。 
 
 以Drools为例。 这是一个超级表演者。 但它只对程序员有用，除非你将Guvnor添加到图片中。 在Guvnor之前，Drools只在那些更关注评估性能和可用性的大公司中流行。 
 
 所以，在你自己构建规则UI这样一个可怕的项目之前，至少要看一些它们。 如果您使用的是Java平台，请考虑Drools。 您还可以查找位于MS Workflow Foundation内置的规则引擎之上的商业UI组件。 所有这些引擎都以XML格式保存规则，它们都具有很棒的UI（或UI组件），并且都是免​​费的或相对便宜的（除了InRule和BizTalk之外）。 
 
 我希望这可以帮助您节省团队即将体验的所有恶化和费用:) 

It's been said many times before but I'm going to say it again simply because I am in business rules industry (university, not vendor) and business rules are quickly becoming very important part of any IT development.
 
It is very likely that your team will spend a lot of money, time and effort trying to reinvent the wheel. Creating a code that would evaluate your rules is not usually a problem. And you seem to solve it already. Now you are facing the most challenging part of it: the UI.
 
Even though all books say that the most important point of business rules is the separation of business logic from the main system, I'd say that practically the most important point of having business rules engine is to enable BUSINESS PEOPLE to create those rule themselves, without bothering programmers. That means a solid UI.
 
There are business rules engines with great user interfaces out there that do everything that you need, and they do that more efficiently for substantially less money. Some of them are free or have free option(s).
 
Take Drools, for example. It's a super performer. But it's useful only for programmers unless you add the Guvnor to the picture. Before the Guvnor, Drools was popular only among huge corporations that care more about evaluation performance then usability.
 
So, at least take a look at some of them before you undertake such a monstrous project of building rules UI yourself. Consider Drools if you are on Java platform. You can also look for commercial UI components that sit on top of the rule engine built into MS Workflow Foundation. All those engines save their rules in XML format, they all have great UI (or UI components), and all are either free or relatively cheap (except for maybe InRule and BizTalk.)
 
I do hope this helps you to save all that aggravation and expense that your team is about to experience :)