uislider

I am trying to implement some form of snapping or steps with the UISlider. I have written the following code but it does not work as smooth as I hoped for. It works, but when the I slide it upwards it snap 5points to the right leaving the finger not centered over the "slide-circle" This is my code where self.lastQuestionSliderValue is a property of the class which I have set to the initial value of the slider. if (self.questionSlider.value > self.lastQuestionSliderValue) { self.questionSlider.value += 5.0; } else { self.questionSlider.value -= 5.0; } self.lastQuestionSliderValue = (int)self

Possible Duplicate: Increment UISlider by 1 in range 1 to 100 I am new to iPhone, How do I have my UISlider go from 0 to 2 in increments of 0.2? slider = [[UISlider alloc] init]; [slider addTarget:self action:@selector(sliderChange:) forControlEvents:UIControlEventValueChanged]; [slider setBackgroundColor:[UIColor clearColor]]; slider.minimumValue = 0.0; slider.maximumValue = 2.0; slider.continuous = YES; slider.value = 0.0; - (IBAction)sliderChange:(id)sender{ NSLog(@"slider.value=%f",slider.value); } When i slide my log shows... slider.value = 1.000000 slider.value = 1.123440 slider.value =

I am writing an app that lets users take a picture and then edit it. I am working on implementing tools with UISliders for brightness/contrast/saturation and am using the Core Image Filter class to do so. When I open the app, I can take a picture and display it correctly. However, if I choose to edit a picture, and then use any of the described slider tools, the image will rotate counterclockwise 90 degrees. Here's the code in question: - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.navigationItem.hidesBackButton = YES; //hide default nav /

Hello I have set my UISlider minimum value to 0.00. Then I set it's max value in this way. self.viewPlayer.layer.addSublayer(playerLayer) let duration : CMTime = avPlayer.avPlayer.currentItem!.asset.duration let seconds : Float64 = CMTimeGetSeconds(duration) sliderBar.maximumValue=Float(seconds) sliderBar!.isContinuous = false sliderBar!.tintColor = UIColor.green But I am getting this exception *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Attempting to set a slider's minimumValue (0.000000) to be larger than the maximumValue (nan)' enter code here

I need to set the interval value for an UISlider. Please help.. yourSlider.value = x; You should really read the documentation, lots of great resources in the iOS Developer Center . Edit: With regards to your more specific question in the comments: yourSlider.minimumValue = -10; yourSlider.maximumValue = 10; [yourSlider addTarget:self action:@selector(roundValue) forControlEvents:UIControlEventValueChanged]; - (void)roundValue{ yourSlider.value = round(yourSlider.value); } A flexible solution: // define MIN_VALUE, MAX_VALUE and INTERVAL somewhere, such as 3, 18 and 3 slider.TouchUpInside +=

Does a method get called when a UISlider 's value changes? I want to be able to update a value based on the UISliders value, but only when it changes... Thanks for any help. In IB, you can hook up an IBAction to the Value Changed event or in code add target/action for UIControlEventValueChanged . For example: [mySlider addTarget:self action:@selector(sliderValueChanged:) forControlEvents:UIControlEventValueChanged]; - (IBAction)sliderValueChanged:(UISlider *)sender { NSLog(@"slider value = %f", sender.value); } Note that if you want the value change events as the user is sliding , then be sure

I would like to make a slider stop at discrete points that represent integers on a timeline. What's the best way to do this? I don't want any values in between. It would be great if the slider could "snap" to position at each discrete point as well. To make the slider "stick" at specific points, your viewcontroller should, in the valueChanged method linked to from the slider, determine the appropriate rounded from the slider's value and then use setValue: animated: to move the slider to the appropriate place. So, if your slider goes from 0 to 2, and the user changes it to 0.75, you assume this