It works like this:
A slider displays the range between which the user can choose a value. The at most left value is the minimal value, the at most right the maximal value.
The slider consists of a horizontal strip divided into two parts by a control. The left highlighted part corresponds with the value that’s currently selected. The right part shows how much room the user has to adjust the value.
When the user slides the control to the right, the left highlighted part grows…
…and the corresponding value is displayed (this is optional), or played when the value concerns a sound volume.
To confirm the new value tap OK
The slider is applied usually in a set up view, where the user has to enter a value for something, like a distance or a sound level. The user can make a choice throughout a (wide) range of allowed values.
When there are just a few options available to choose from, consider using radio buttons or a spinner.
- It's a very intuitive way of entering a value for something and easy to understand
- It's fast
- It's fun
- When the range of values is big, it's harder to enter an exact value.
- The cursor is hidden by the finger. The visual feedback is none for small changes. (NicolasG)
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