How to stop and resume Observable.interval emiting ticks

Question

This will emit a tick every 5 seconds.

Observable.interval(5, TimeUnit.SECONDS, Schedulers.io())
            .subscribe(tick -> Log.d(TAG, "tick = &qu         


        

Answer 1

Some time ago, I was also looking for kind of RX "timer" solutions, but non of them met my expectations. So there you can find my own solution:

AtomicLong elapsedTime = new AtomicLong();
AtomicBoolean resumed = new AtomicBoolean();
AtomicBoolean stopped = new AtomicBoolean();

public Flowable startTimer() { //Create and starts timper
    resumed.set(true);
    stopped.set(false);
    return Flowable.interval(1, TimeUnit.SECONDS)
            .takeWhile(tick -> !stopped.get())
            .filter(tick -> resumed.get())
            .map(tick -> elapsedTime.addAndGet(1000));
}

public void pauseTimer() {
    resumed.set(false);
}

public void resumeTimer() {
    resumed.set(true);
}

public void stopTimer() {
    stopped.set(true);
}

public void addToTimer(int seconds) {
    elapsedTime.addAndGet(seconds * 1000);
}