可以的Android 2.3 SDK交叉编译早期版本？
问题描述：
我有一个Android应用程序一直在市场上，因为操作系统的V1。从此，我没有碰过它，从而忘记了一切有关于Android开发给忘了。
I have an Android app that's been on the market since v1 of the OS. I haven't touched it since and thus forgot all that there was to forget about developing for Android.
随着新的Android 2.3 SDK，可我编译我的应用程序，使previous的OS版本的用户也可以使用它（比如说1.6或2.1）？
With the new Android 2.3 SDK, can I compile my app so that users of previous OS releases can also use it (say 1.6 or 2.1)?