Interval Value for UISlider

Question

I need to set the interval value for UISlider.

Please, help..

Answer 1

yourSlider.value = x;

You really have to read the documentation, lots of great resources at the iOS Developer Center .

Edit: Regarding 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); } 

Answer 2

Flexible solution:

  // define MIN_VALUE, MAX_VALUE and INTERVAL somewhere, such as 3, 18 and 3 slider.TouchUpInside += delegate { touchUpInside(); }; /// <summary> /// set value to one of intervals /// </summary> void touchUpInside(){ // get the nearest interval value for(int i=MIN_VALUE; i<=MAX_VALUE; i=i+INVERVAL){ if(slider.Value > i && slider.Value < i + INVERVAL){ if(slider.Value - i < i + INVERVAL - slider.Value){ slider.Value = i; }else{ slider.Value = i + INVERVAL; } break; } } } 

Answer 3

I know this question is old, but I just want to share how I did it.

Assuming that the UISlider is already initialized, the minimum and maximum values ​​of the UISlider must first be set:

 mySlider.minimumValue = -2.0; mySlider.maximumValue = 2.0; 

Then set the selector that will handle the changes in the slider:

 [mySlider addTarget:self action:@selector(sliderDidChangeValue:) forControlEvents:UIControlEventValueChanged]; 

Also set the spacing (for the property). It is important that the interval is positive. (And, indeed, INTERVAL MUST BE POSITIVE.)

 self.interval = 0.5 //_interval is float 

Declare method (s):

 - (void)sliderDidChangeValue:(id)sender { UISlider *slider = (UISlider *)sender; //Round the value to the a target interval CGFloat roundedValue = [self roundValue:slider.value]; //Snap to the final value [slider setValue:roundedValue animated:NO]; } - (float)roundValue:(float)value { //get the remainder of value/interval //make sure that the remainder is positive by getting its absolute value float tempValue = fabsf(fmodf(value, _interval)); //need to import <math.h> //if the remainder is greater than or equal to the half of the interval then return the higher interval //otherwise, return the lower interval if(tempValue >= (_interval / 2.0)){ return value - tempValue + _interval; } else{ return value - tempValue; } } 

Answer 4

 int sliderValue = kSliderInterval * floor((slider.value / kSliderInterval) + 0.5); 

Answer 5

UISliders do not "increase" their value, they increase or decrease their value depending on how they are touched. These properties can be used to set the limits of the slider:

 slider.minimumValue = 0.0; slider.maximumValue = 0.5; 

Answer 6

I would suggest that put the level just below the slider where you want to place the value and set the maximum and minimum value, then the value between the values ​​can be calculated without a dot and division and finally display the values ​​in uilabel. hope this helps

luck