ORMLite的官方文档上，有这么一段话：
Although improvements and DAO caching has been made, creating a couple of DAOs when your application starts can still take too long and generate far too much garbage collection activity. Turns out that one of the major culprits is some ugly code down in the Android OS – especially in Method.equals(). Because annotations use this method, looking up annotation values is extremely expensive, often garbage collecting thousands of objects and megabytes of space. Android knows about the issues and a fix has been made but we have no idea when these performance improvements will make it into an Android release.Although improvements and DA
