@property(nonatomic) float minimumValue;
@property(nonatomic) float maximumValue;
这两个是最小最大值的设定
@property(nonatomic) float value;
这个是值
UISlider * slider = [[UISlider alloc]initWithFrame:CGRectMake(0, 100, 320, 20)];
[slider addTarget:self action:@selector(changeSliderValue:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:slider];
-(void)changeSliderValue:(UISlider *)slider
{
//这里读取slider.value (0,1) 获取值 显示什么的自己做
}