You would like to allow your users to specify a value within a range, using an easy-to-use and intuitive UI.

Use the UISlider class.

You’ve certainly seen sliders before. Figure 2-18 shows an example.

Figure 2-18. The volume slider at the bottom of the screen

To create a slider, instantiate an object of type UISlider. Let’s dive right in and create a slider and place it on our view controller’s view. We’ll start with our view controller’s header file:

#import <UIKit/UIKit.h>

@interface Implementing_Range_Pickers_with_UISliderViewController
           : UIViewController

@property (nonatomic, strong) UISlider *mySlider;

@end