我正在尝试使用Rx
Swift重现一个简单的计时器.
我有一个暂停/播放按钮,只适用于暂停和恢复.
gameTimer = Observable<NSInteger>.interval(1,scheduler: MainScheduler.instance)
.subscribeNext({ sec -> Void in
print("\(sec) s")
}).addDisposableTo(disposeBag!)
pauseResumeButton.rx_tap
.map{ !self.isRunning.value }
.startWith(true)
.bindTo( isRunning )
.addDisposableTo(disposeBag!)
isRunning显然是一个变量.
我可以停止计时器设置disposeBag = nil但是我不能暂停它…. itried过滤事件但计数显然继续增长…
谁能帮我？谢谢！
一个小技巧：
class ViewController: UIViewController {
let isRunning = Variable(true)
override func viewDidLoad() {
super.viewDidLoad()
isRunning.asObservable()
.debug("isRunning")
.flatMapLatest { isRunning in
isRunning ? Observable<Int>.interval(1,scheduler: MainScheduler.instance) : .empty()
}
.flatMapWithIndex { (int,index) in Observable.just(index) }
.debug("timer")
.subscribe()
.addDisposableTo(disposeBag)
navigationItem.rightBarButtonItem!.rx.tap
.subscribe(onNext: { [unowned self] in
self.isRunning.value = !self.isRunning.value
})
.addDisposableTo(disposeBag)
}
}
结果：
2016-12-17 20:53:11.408: timer -> subscribed 2016-12-17 20:53:11.414: isRunning -> subscribed 2016-12-17 20:53:11.415: isRunning -> Event next(true) 2016-12-17 20:53:12.503: timer -> Event next(0) 2016-12-17 20:53:13.488: timer -> Event next(1) 2016-12-17 20:53:14.488: timer -> Event next(2) 2016-12-17 20:53:15.488: timer -> Event next(3) 2016-12-17 20:53:16.154: isRunning -> Event next(false) 2016-12-17 20:53:23.155: isRunning -> Event next(true) 2016-12-17 20:53:24.223: timer -> Event next(4) 2016-12-17 20:53:25.229: timer -> Event next(5) 2016-12-17 20:53:26.228: timer -> Event next(6) 2016-12-17 20:53:27.220: timer -> Event next(7) 2016-12-17 20:53:28.225: timer -> Event next(8) 2016-12-17 20:53:29.221: timer -> Event next(9) 2016-12-17 20:53:29.971: isRunning -> Event next(false)