A slider is a horizontal track with a control called a thumb, which you can slide with your finger to move between a minimum and maximum value, such as screen brightness level or position during media playback.
Sliders
Guidelines
As a slider’s value changes, the portion of track between the minimum value and the thumb fills with color. A slider can optionally display left and right icons that illustrate the meaning of the minimum and maximum values. When introducing sliders to your up, follow these guidelines to ensure adherence to usability standards:
- Customize a slider’s appearance if it adds value. A slider’s appearance, including track color, thumb image, and left and right icons, can be adjusted to blend with your app’s design and to communicate intent. A slider that adjusts image size, for example, could show a small image icon on the left and a large image icon on the right.
- Don’t use a slider to adjust audio volume. If you need to provide volume control in your app, use a volume view, which is customizable and includes a volume-level slider and a control for changing the active audio output device. To learn about implementing a volume view, see MPVolumeView.
