如果你只是想在一个单线程串行执行一串任务和顺序并不重要，你可以创建一个的Timer 对象（它有其自己的线程），那么每个任务添加到它作为一个TimerTask 。如果您使用的0或1的延迟安排，它会基本上是尽快运行任务。而且，由于一个定时器只有一个线程，如果您安排多个任务的同时，将确保只有一个会同时运行。

If you just want to execute a bunch of tasks on a single thread serially and order isn't important, you could create a Timer object (which has its own thread) then add each task to it as a TimerTask. If you schedule it with a delay of 0 or 1, it will essentially run that task as soon as possible. And since a Timer only has a single thread, if you schedule multiple tasks concurrently, it will ensure that only one will run at a time.

顺便说一句，我是在黑莓开发者大会上，今年说给RIM的工程师，他说，作为OS 5.0中不再有限制了线程的数量 - 所以，这正成为越来越少的关注。

Incidentally, I was talking to a RIM engineer at the BlackBerry Developer Conference this year and he said that as of OS 5.0 there are no longer limits to the number of threads -- so this is becoming less and less of a concern.