Question

I have some location finding code and while I’m waiting for a read of an appropriate accuracy I’d also like to have a timeout and use whatever the best location read is up to that point.

I seem to be misunderstanding how to cancel and restart a timer.

I want to start a timeout timer when I begin my search and restart the timer every time I repeat my search…

private void refreshLocation() {
    if (locationTimeoutTimer != null) {
        locationTimeoutTimer.cancel();
        locationTimeoutTimer.purge();
    }

    locationTimeoutTimer = new Timer();
    locationTimeoutTimer.schedule(timeoutReached, 60000);
        //Do other things...
}

However, I get the following error whenever this refreshLocation is called a second time.

java.lang.IllegalStateException: TimerTask is scheduled already

Answer 1

Your code is very similar to code I have – that is working. But some differences I notice are that

• you may need to create the new timer as a named daemon – for example locationTimer = new Timer("locationtimer", true);
• you may need to create a new TimerTask each time you schedule (I assume timeoutReached is the TimerTask?) – for example locationTimer.schedule(new timeoutReached(), 60000);