UISlider

#import "ViewController.h"


@interface ViewController ()
{
    UISlider * slider;
    UIView *view;
}
@end

@implementation ViewController


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    slider = [[UISlider alloc] initWithFrame:CGRectMake(10,50,300,30)];
    [self.view addSubview:slider];
    [slider addTarget:self action:@selector(action:) forControlEvents:UIControlEventValueChanged];
    slider.minimumValue=0;
    slider.maximumValue=1000;
    slider.minimumValueImage = [UIImage imageNamed:@"dp.jpg"];
    slider.maximumValueImage = [UIImage imageNamed:@"dp.jpg"];
    //slider.continuous = NO;
    slider.minimumTrackTintColor = [UIColor redColor];
    slider.maximumTrackTintColor = [UIColor greenColor];
    slider.thumbTintColor = [UIColor blueColor];

    view  = [[UIView alloc] initWithFrame:CGRectMake(10,300,50,50)];
    view.backgroundColor = [UIColor orangeColor];
    [self.view addSubview: view];
}

- (void) action:(UISlider *)slider{
    //NSLog(@"%f",slider.value);
    view.frame = CGRectMake(slider.value/1000*250,300,50,50);
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [slider setValue:arc4random()%1000 animated:YES];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end