Control event for UISlider when end tracking

Question

I have a video player slider, I want to track event when user has started sliding video player slider and ended sliding video player slider. Also, I am tracking what slider value have changed. When slider starts and its value get changed I am able to track it successfully. My problem is when sliding ends I am not able to track it. Which UIControlEvent should I use for sliderEndedTracking?

I am using the following code:

// Slider actions for UIControlEvents
        playerSlider.addTarget(self, action: #selector(sliderBeganTracking(_:)),
            forControlEvents: UIControlEvents.TouchDown)
        playerSlider.addTarget(self, action: #selector(sliderEndedTracking(_:)),
            forControlEvents: UIControlEvents.TouchUpInside )
        playerSlider.addTarget(self, action: #selector(sliderEndedTracking(_:)),
            forControlEvents: UIControlEvents.TouchUpOutside)
        playerSlider.addTarget(self, action: #selector(sliderValueChanged(_:)),
            forControlEvents: UIControlEvents.ValueChanged)


// Slider Actions:
        func sliderBeganTracking(slider: UISlider!) {
            Log.Debug("sliderBeganTracking")
        }

        func sliderEndedTracking(slider: UISlider!) {
            Log.Debug("sliderEndedTracking")
        }

        func sliderValueChanged(slider: UISlider!) {
            Log.Debug("sliderValueChanged")
        }

see this question: https://stackoverflow.com/questions/9390298/iphone-how-to-detect-the-end-of-slider-drag — MartianMartian, Oct 29 '17 at 10:45

score 7 · Answer 1 · answered Jun 17 '16 at 10:08

7

First of all you need to do CNTRL+DRG from UISlider(Storyboard) to your view controller. Here, Use 'Value Changed' Event.

At this action you try any code just print something.

Secondly, Make outlet of UISlider as slider. than use following code ::

 self.slider.addTarget(self, action: #selector(PreviewViewController1.sliderDidEndSliding(_:)), forControlEvents: ([.TouchUpInside,.TouchUpOutside]))

Try to print something now in sliderDidEndSliding() Method. Example :

func sliderDidEndSliding(notification: NSNotification)
    {
print("Hello")
}

By using these two methods you will get the actual prior implementation of UISlider.

answered Jun 17 '16 at 10:08

JAck

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Thank you so much. I started the search for this answer hours ago. Yours is the only thing that's worked for my Swift3 project. I had to modify slightly: radSlider.addTarget(self, action: #selector(sliderDidEndSliding(notification:)), for: ([.touchUpInside,.touchUpOutside])) – CptRayMar Jan 21 '17 at 20:11
Thank you very much! [.touchUpInside,.touchUpOutside] perfect work for when value DID changed – Booharin Dec 22 '18 at 16:06

score 1 · Answer 2 · answered Jun 17 '16 at 08:37

1

TouchUpInside event is working for me. If you release finger from UISlider, the event is fired. Isn't what you want ?

answered Jun 17 '16 at 08:37

AnthoPak

4,191
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I tried using TouchUpInside but it didn't worked for me. – Ashish Verma Jun 17 '16 at 09:53
The event isn't fired at all ? Are you dragging your finger out of the UISlider? – AnthoPak Jun 17 '16 at 10:05
Sometimes it is working fine but sometimes it's not. – Ashish Verma Jun 17 '16 at 10:27
Yes, I also noticed that. I think it doesn't work if you drag too much your finger out of the UISlider before releasing. – AnthoPak Jun 17 '16 at 11:41

Control event for UISlider when end tracking

2 Answers2