Android, Java: ExecutorService execute after shutdown

Question

I have a ExecutorService:

private final ExecutorService listenDataExecutorService = 
                              Executors.newSingleThreadExecutor();

In same case I need executor to stop doing his job. For this I call listenDataExecutorService.shutdown();

Then after some time, I need this executor to do this job again. But when I call listenDataExecutorService.execute() exception is thrown.

How can I execute new task for executor after shutdown ?

Answer 1

Once an executor service has been shut down it can't be reactivated. Create a new executor service to restart execution:

listenDataExecutorService = Executors.newSingleThreadExecutor();

(You'd have to drop the final modifier though.)

Another option is to cancel all pending tasks instead, and then reschedule them when you want to resume execution.