我無法停止定時器NSTimer
創建執行輔助操作。NSTimer無效無效
我已閱讀並嘗試過各種可能的Web指南,但沒有任何工作,並且計時器即使在Controller被銷燬時也會繼續運行。下面是有問題的代碼:
/* Copy banner in a temp array and change order to random value */
private func getBanners(){
let realm = try! Realm()
let banners = self.synchronizer.getAllBanners()?.sorted("ordine")
if let banners = banners {
for banner in banners {
let random = Double.random(0.0, 1.0)
let currentOrderValue = banner.ordine
self.banners.append(banner)
do {
try realm.write({
self.banners.last!.ordine = currentOrderValue + random
})
} catch let error as NSError {
print(error)
}
}
}
}
/*Update index of banner to show */
func updateIndex(timer : NSTimer) {
if self.index+1 < self.banners.count {
for banner in self.banners{
print(banner.name + " \(banner.ordine)")
}
self.index+=1
} else {
self.index = 0
}
self.setImageBanner()
}
/* Set image of banner to show*/
private func setImageBanner() {
if self.banners.count > 0 {
self.bannerImage.hidden = false
let banner = self.banners[self.index]
let file = banner.images[0]
self.synchronizer.loadImageURL(file.link, imageView: self.bannerImage)
} else {
self.bannerImage.hidden = true
}
}
/* Start Timer */
func startTimerForBanners() {
dispatch_async(dispatch_get_main_queue(), {() -> Void in
self.getBanners()
})
self.timer = NSTimer(timeInterval: 5, target: self, selector: #selector(self.updateIndex(_:)), userInfo: nil, repeats: true)
NSRunLoop.currentRunLoop().addTimer(self.timer!, forMode: NSRunLoopCommonModes)
}
/* Open link on banner click */
func openLink(sender : UITapGestureRecognizer){
if self.index >= 0 && self.index < self.banners.count {
let banner = self.banners[self.index]
print(banner.name)
self.synchronizer.openLink(banner.url)
}
}
func trialLesson(sender : UITapGestureRecognizer){
performSegueWithIdentifier("trial_lesson_segue", sender: nil)
}
override func viewWillDisappear(animated: Bool) {
super.viewWillDisappear(animated)
if let timer = self.timer {
timer.invalidate()
}
}
從哪裏打電話'startTimerForBanners'? –
你試過timer = nil嗎? – kocakmstf
@kocakmstf'timer = nil'不會停止計時器。 –