uislider

When I add my slider as subview of any view besides self.view it does not work (doesn't slide) but it works fine when it is a subview of self.view. You can see it on the other views besides self.view but it doesn't work. Here is my code: alphaSlider = [[UISlider alloc] initWithFrame:CGRectMake(0, 0, 90, 10)]; [alphaSlider setMinimumValue:0.01]; [alphaSlider setMaximumValue:1]; [alphaSlider setValue:0.5]; [alphaSlider setUserInteractionEnabled:YES]; [alphaSlider addTarget:self action:@selector(alphaSliderDidChange:) forControlEvents:UIControlEventValueChanged]; alphaSlider.continuous = YES;

By default, when I observe the value of a UISlider, it only updates once, when the slider is clicked, not continuously, even thought that is the slider's setting. Is there a way to get the continuous value change of the slider? UIKit doesn't actively support KVO. You may be getting lucky in that some notifications may make it through the usual mechanisms, but for the most part you shouldn't assume you can use KVO with any UIKit class. You should instead get your continuous events through the UISlider's associated target's action method. the continuous updating applies to the calling of the

What is the exact size (width, height) of the (default) thumb image for the iOS slider? Is there perhaps some clever way to coax this out of the system (XCode, iOS)? I tried int thumbWidth = slider.currentThumbImage.size.width; which I found here on this site, but it comes back with 0. Additional question: The Xcode debugger shows this undocumented variable in the UISlider : CGFloat _hitOffset . Does anyone by chance know what it is and what it's for? What about this? Works for me: CGRect trackRect = [self trackRectForBounds:self.bounds]; CGRect thumbRect = [self thumbRectForBounds:self.bounds

I have a PageViewController which is initialized like this: self.pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil]; On one of the pages, there's a UISlider. My problem is that when I have transitionstyle set to UIPageViewControllerTransitionStyleScroll , it takes 150-200 ms before beginTrackingWithTouch is invoked on the slider. This behavior is not seen when I use UIPageViewControllerTransitionStylePageCurl , where the UISlider is selected

I need to make a UISlider in my iOS App with the value of the slider in the handle. Demo image of what I mean: Is there a pod that could do it? You dont need neither any third party control nor you will have to create a slider on your own. You can still use the UISlider and customise it as per your need :) Step 1: As we can see we need to set the colour for minimum track and as it is not default white isn't it ??? Its somewhat orange, I dont know exact coolor of it hence am setting it to red. You set whatever colour you want :) But UISlider's setMinimumTrackImage expects a UIImage not colour.

I am willing to do this widget: Just A-B-C can be chosen. Any idea if someone already did something similar? If not, how would you do it? Personally I'd use a standard UISlider and add logic to the valueChanged handler, so that once the user has dragged the slider to an arbitrary point on the scale, the code determines which is the nearest 'valid' value, and would manually set the value to a valid number. E.g. if the user drags the slider to 0.9, the distances to valid points are 0.9 (to A), 0.4 (to B) and 0.1 (to C). So the code would pick C, and set slider.value to 1.0. Can't remember off

How can I change the size of a UIImage that I am using as a thumbImage. The code I use to set the image is as follows. let image: UIImage = UIImage(assetIdentifier: UIImage.AssetIdentifier.Slider) I use an Enum to get the image, no problem there. The code I use to set the thumbImage is as follows. self.setThumbImage(image, forState: UIControlState.Normal) I have tried using the code below to change the thumb images size but cannot find the solution. let trackRect: CGRect = CGRect(x: 0.0, y: 0, width: self.frame.size.width, height: self.frame.size.height) let thumbRect: CGRect = CGRect(x: 0.0,

I'd like to create a range slider that has a div element follow the range thumb. This div element would contain the current value of the range input. How would I go about doing something like this? I've looked into styling the slider but don't know how I could add an actual element onto the thumb. It would look something like this, excuse my terrible drawing abilities: Edit: The following div should update while slider is being dragged. UPDATE: I got a pretty good prototype going but cant seem to get it to follow the slider perfectly. It gets off center by a few pixels depending on where it is