如何停止和恢复Observable.interval发出滴答声 [英] How to stop and resume Observable.interval emiting ticks
本文介绍了如何停止和恢复Observable.interval发出滴答声的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这将每5秒钟发出一个滴答声.
This will emit a tick every 5 seconds.
Observable.interval(5, TimeUnit.SECONDS, Schedulers.io())
.subscribe(tick -> Log.d(TAG, "tick = "+tick));
要停止它,您可以使用
Schedulers.shutdown();
但是所有调度程序都停止了,以后无法继续进行滴答.我该如何停止并继续发出优美"的声音?
But then all the Schedulers stops and it is not possible to resume the ticking later. How can I stop and resume the emiting "gracefully"?
推荐答案
以下是一种可能的解决方案:
Here's one possible solution:
class TickHandler {
private AtomicLong lastTick = new AtomicLong(0L);
private Subscription subscription;
void resume() {
System.out.println("resumed");
subscription = Observable.interval(5, TimeUnit.SECONDS, Schedulers.io())
.map(tick -> lastTick.getAndIncrement())
.subscribe(tick -> System.out.println("tick = " + tick));
}
void stop() {
if (subscription != null && !subscription.isUnsubscribed()) {
System.out.println("stopped");
subscription.unsubscribe();
}
}
}
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