在.NET中的土地，我通常会查询数据库，并填充泛型列表的集合类型。然后，应用程序将使用它。

在Android的土地我一直在阅读有关数据库访问和应用程序使用。为什么大多数的文档中使用了一个光标，使用的常量的访问呢？这是节省资源吧？

这是节省资源吧？

没错。 +性能。 一般的规则是为了避免创建对象的w / o必要性，要在内存，CPU功率（并导致电池寿命）的限制和垃圾收集是相当昂贵的。

In .NET land I would normally query the database and populate a generic List kind of collection. Then the app would use this.

In Android land I have been reading about DB access and use in apps. Why do most of the docs show the use of a cursor and use of constants to access it? Is this to save on resources perhaps?

Is this to save on resources perhaps?

Exactly. + performance. The general rule is to avoid creating objects w/o necessity as you are limited on memory, cpu power (and resulting battery life) and garbage collection is rather expensive.