等待所有线程在服务中完成

Question

I have a Service where I run a task inside a Thread. I call this Service many times and obviously it creates the corresponding number of Threads.

How am I going to know when no one Thread is running so I can call stopSelf() ?

Answer 1

The easiest thing to do is make your service subclass IntentService . This is a special kind of Service that will perform work in a background thread, and automatically stop the service when there is no more work to perform. There is a single thread per Service that you declare in your manifest. All you do is determine what sort of work you want to perform by implementing its onHandleIntent() , which is automatically run in that background thread for each Intent delivered to it.

Answer 2

You can keep track of the running threads in an array. When each thread completes it should remove itself from the array and call a method that checks if there are any running threads. That method just checks if the list of running threads is empty, and if so, calls stopSelf() .

Or use IntentService if this suits your needs.