I found the code below in the Apple documentation and added it to my viewDidLoad
method but the slider doesn't appear when I run the code.
CGRect frame = CGRectMake(0.0, 0.0, 200.0, 10.0);
UISlider *slider = [[UISlider alloc] initWithFrame:frame];
[slider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
[slider setBackgroundColor:[UIColor clearColor]];
slider.minimumValue = 0.0;
slider.maximumValue = 50.0;
slider.continuous = YES;
slider.value = 25.0;
question from:https://stackoverflow.com/questions/4006483/how-can-i-create-and-display-a-uislider-programmatically-in-ios